Page 1 SnapServer Overland ® Storage Administrator’s Guide ™ For GuardianOS Version 7.2 on SnapServer DX-Series Appliances May 2012 10400317-003...
Page 2 Overland Storage. Overland Storage provides this manual as is, without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Overland Storage may make improvements or changes in the product(s) or programs described in this manual at any time.
Page 3: Product Documentation
Follow the appropriate link on that page to download the latest software file or document. For additional assistance, search at http://support.overlandstorage.com. Overland Technical Support For help configuring and using your SnapServer with GuardianOS 7.2, search for help at: http://support.overlandstorage.com/kb You can email our technical support staff at techsupport@overlandstorage.com...
Page 4: Typographical Conventions
SnapServer 7.2 Administrator’s Guide For a complete list of support times depending on the type of coverage, visit our website at: http://docs.overlandstorage.com/care Conventions This document exercises several alerts and typographical conventions. Alerts Convention Description & Usage IMPORTANT An Important note is a type of note that provides information essential to the completion of a task or that can impact the product and its function.
Page 5: Software Updates
SnapServer 7.2 Administrator’s Guide Software Updates The latest release of the GuardianOS software can be obtained from the Downloads and Resources (NAS Solutions) page at the Overland Storage website: http://docs.overlandstorage.com/snapserver Follow the appropriate instructions to download the latest software file.
Page 6: Table Of Contents
What’s New in GuardianOS 7.2 .......................... 1-3 What’s New in GuardianOS 7.1 .......................... 1-4 What’s New in GuardianOS 7.0 .......................... 1-4 Using the SnapServer Manager .......................... 1-6 SnapServer Manager Installation ........................1-6 Launch SnapServer Manager ........................1-6 SnapServer Manager Help ..........................1-6 Multiserver Administration ..........................
Page 7 Supported Network Manager Applications and MIBs ................3-25 Configure SNMP ............................3-25 Web Access ................................ 3-26 Configuring HTTP/HTTPS ..........................3-27 Using Web Root to Configure the SnapServer as a Simple Web Server ..........3-27 Web View ..............................3-29 iSNS Configuration .............................. 3-30 Chapter 4 - DynamicRAID Storage Storage Pools ................................
Page 8 SnapServer 7.2 Administrator’s Guide Volume Properties ............................5-17 Quotas ................................. 5-19 Default Quota Assignments ......................... 5-19 How the SnapServer Calculates Usage ..................... 5-19 Enable/Disable Quotas ..........................5-20 Displaying Quotas ............................5-21 Chapter 6 - Other Storage Options Snapshots ................................6-2 Creating Snapshots ............................
Page 9 SnapServer 7.2 Administrator’s Guide Delete Group ..............................7-23 Security Models ..............................7-24 Managing Volume Security Models ......................7-24 Managing Folder Security Models ......................7-24 ID Mapping ................................. 7-25 Configure ID Mapping ..........................7-26 Remove all Mappings ..........................7-27 Home Directories ..............................7-27 Configure Home Directories ........................
Page 10 Signature Updates .............................. 11-5 Updating SnapServers with Internet Access ....................11-5 Updating a SnapServer without Internet Access ..................11-6 Distributing Updates from One SnapServer to Another ................11-6 Verifying Download Events .......................... 11-7 Alert Options ............................... 11-8 The Move Directory ............................11-8 Log View ................................
Page 11 SnapServer 7.2 Administrator’s Guide iSCSI Disk Backups ............................... B-14 Using Backup Exec for VSS-based Snapshots of SnapServer iSCSI Disks ..........B-14 Appendix C - Security and Access Security Model Rules ............................C-1 Security Model Directories ..........................C-2 Security Model Management ..........................C-2 Special Share Options ............................
Page 12: Chapter 1 - Overview
I/O throughput across multi-network protocols. To this end, all unnecessary system control and processing functions that are associated with a general-purpose server have been removed. This guide applies to SnapServer DX appliances running GuardianOS version 7.2 and includes SnapExpansion units.
Page 13 SnapServer GuardianOS 7.2 Administrator’s Guide GuardianOS Specifications Feature Specification Network Client Types Microsoft Windows 2003/2003 R2/2008 SP2/2008 R2 /XP SP3/Vista SP2/7 Mac OS X 10.5/10.6/10.7 Sun Solaris 10 and 11 HP-UX 11 AIX 5.3/6 Red Hat Enterprise Linux (RHEL) 4.x/5.x/6.x Novell SuSE Linux Enterprise Server (SLES) 10.x/11.x...
Page 14: What's New In Guardianos 7.2
• Browser-based administration tool called the Web Management Interface • SnapCLI for volume system deployment • SnapServer Manager utility (platform independent) • SNMP (MIB II and Host Resource MIB) • User disk quotas for Windows, UNIX/Linux, Mac, FTP/FTPS (Traditional RAID only) •...
Page 15: What's New In Guardianos 7.1
With the release of GuardianOS 7.2 the following features and functionality are available: Feature New Functionality SnapExpansion Units The capacity of a SnapServer can be increased by attaching expansion units. SnapExpansion units are supported by both DynamicRAID and Traditional RAID. GuardianOS now supports seven (7) SnapExpansion units connected to a SnapServer DX2 or three (3) units connected to a SnapServer DX1.
Page 16 DynamicRAID simplifies storage management and RAID provides additional configuration options not available in Traditional RAID. A SnapServer can be purchased with any amount of initial storage (or number of drives), and more capacity can be added over time by inserting or replacing...
Page 17: Using The Snapserver Manager
Server List Status Bar SnapServer Manager Installation You can download and install SSM by navigating to the Overland Storage NAS website and downloading the SnapServer Manager executable file. SSM can be installed to all client platforms, including Windows, Mac OS X, Linux, and UNIX.
Page 18: Multiserver Administration
SnapServers are configured to acquire an IP address from a DHCP server. If no DHCP server is found on the network, the SnapServer defaults to an IP address in the range of 169.254.xxx.xxx and is labeled “ZeroConf” in SSM. While you may not be able to see the server on your network, you can discover the SnapServer using either the default server name or the SSM utility.
Page 19: Connect Using The Server Name
In the login dialog box, enter admin as the user name and admin as the password, then click OK. 5. Complete the Initial Setup Wizard. At this point, your SnapServer is ready to be configured for your specific environment and needs. SnapExtensions...
Page 20: Wake-On-Lan Support
(and cannot be disabled) for Ethernet 1 (Management) and Ethernet 2 ports. Wake-on-LAN is activated when another computer on the same LAN sends a “magic packet” to the SnapServer using the SnapServer Manager or other program designed to send magic packets. Wake-on-LAN only works for SnapServers and does not work with any expansion units that may be attached to the system.
Page 21: Chapter 2 - Server Setup And Options
Server Setup and Options Chapter 2 This section covers the initial steps needed to set up and configure a SnapServer running GuardianOS 7.2. Topics in Server Setup and Options: • Initial Setup Wizard • Server Status and Site Map •...
Page 22: General Configuration
SnapServer GuardianOS 7.2 Administrator’s Guide Initial Setup Wizard Once you log in, the Initial Setup Wizard runs displaying the Welcome page. The Initial Setup Wizard consists of several web pages that help you configure your server’s basic settings, including: • Server name •...
Page 23 Clicking Next on the Welcome page displays the General Information page of the Initial Setup wizard. This page allows you to change the basic information for the SnapServer. It is recommended that you set your Administrator password at this time to something other than the default.
Page 24: Raid Type Selection
Initial Setup Wizard TCP/IP Configuration The next wizard page shows the current TCP/IP information for this SnapServer. All SnapServers come preset to acquire an IP address from a DHCP server. 1. If you wish to assign a static IP instead, check the box for obtaining a status address and enter the following information: •...
Page 25 2. After you have made your selection, click Next. You will be prompted to confirm your selection of either DynamicRAID or Traditional RAID: 3. Click the Yes option. 4. Continue configuring the SnapServer based on the RAID mode you selected: • If you selected DynamicRAID, proceed to DynamicRAID Setup.
Page 26: Dynamicraid Setup
SnapServer GuardianOS 7.2 Administrator’s Guide Initial Setup Wizard DynamicRAID Setup Once DynamicRAID is selected, the wizard continues with the setup of the head unit. The first step is to detect the installed disk drives. Detecting Available Disks Available disks are detected and displayed on the Detected Disks setup page. You will have an opportunity to add more disks if empty slots exist.
Page 27 SnapServer GuardianOS 7.2 Administrator’s Guide Initial Setup Wizard You choose the parity mode to set the data pool size. Options presented are based on the number and available space of disk drives detected in the previous step. See “Parity Management” on page 4-7 for full details.
Page 28: Traditional Raid Setup
SnapServer GuardianOS 7.2 Administrator’s Guide Initial Setup Wizard 5. When the storage pool has been successfully created on the head unit, a summary page is shown. Click Next to continue. Traditional RAID Setup Once Traditional RAID is selected, the wizard continues with the setup of the head unit. The first step is to detect the installed disk drives.
Page 29 SnapServer GuardianOS 7.2 Administrator’s Guide Initial Setup Wizard Configure Storage – Head Unit The next page lets you manually configure your head unit storage by selecting the RAID type based on the installed disk drives. See “Factors in Choosing a RAID Type” on page 5-2.
Page 30: Registration Page
Initial Setup Wizard Registration Page After the setup wizard is done, you are given a chance to register your SnapServer. The Registration page appears (this page can also be accessed by clicking Maintenance > Support > Registration). Click as indicated to launch the Overland Storage Support website.
Page 31: Server Status And Site Map
Server Status and Site Map Server Status and Site Map SnapServer appliances running GuardianOS 7.2 use a web-based graphical user interface (GUI) called the Web Management Interface. It supports most common web browsers, including Internet Explorer 7 and higher, Firefox 3 and higher, Apple Safari 5, and Google Chrome 9 and higher.
Page 32: Scheduling Data Protection Tasks
SnapServer GuardianOS 7.2 Administrator’s Guide Scheduling Data Protection Tasks Icons & Options Description Snap Finder – Click this to view a list of all SnapServers found on your network and to specify a list of remote servers that will be used to discover SnapServers on other subnets.
Page 33: Server Options
SnapServer GuardianOS 7.2 Administrator’s Guide Server Options Server Options By clicking either the Administration link (or using the GuardianOS 7.2 site map link ( you have immediate access to five editable server options. Server Name Use this option to change the server name and add a comment.
Page 34: Date/Time
The default server name is SNAPnnnnnnn, where nnnnnnn is your server number. For example, the default name for a SnapServer with the serial number 1234567 would be Snap1234567. If desired, enter a unique server name of up to 15 alphanumeric characters. In addition to letters and numbers, you can also use a dash (–) between characters, but spaces are not...
Page 35 Due to security restrictions, NTP cannot be used when a server is joined to an Active Directory domain. Enable this server as Check this box to enable the SnapServer as an NTP server. an NTP server Time Zone Select the time zone that you want to use for this server.
Page 36: Secure Shell
SnapServer GuardianOS 7.2 Administrator’s Guide Server Options Secure Shell Secure Shell (SSH) is a service that provides a remote console to access a command line shell that allows the user to perform basic management and update functions outside the GuardianOS Web Management Interface. See “Command Line Interface”...
Page 37: Ups Protection
GUC232A USB to Serial Adapter Cable). To do this, you must enable UPS support on the SnapServer, as described in this section, to listen to the IP address of one or two APC UPS units, and you must supply the proper authentication phrase configured on the UPS. Some SnapServer products have a single power supply, allowing you to attach a single UPS device.
Page 38 SnapServer GuardianOS 7.2 Administrator’s Guide Server Options Procedure to Configure UPS Protection 1. Complete the following fields: Option Description Enable UPS Support Check the Enable UPS Support check box to enable; leave the check box blank to disable UPS support.
Page 39: Print Server
USB printers is displayed. To add the new printer, click Add Local Printer. 5. The SnapServer will detect the new printer and it should appear as an option in the Local Printer Device drop-down list. Select that printer.
Page 40 Add a printer using your usual method. If you are using SMB, you will need to know the SnapServer name. If you are using IPP, you will need to enter the IP address in the Type field and the printer and sharename in the Queue field.
Page 41 When you remove a printer, remember to remove its information from both the Web Management Interface and the client machines. 1. Disconnect the printer cable from the SnapServer. 2. In the Web Management Interface, navigate to Server > Printing. In the list of printers, the status of printer you just removed should appear as Offline.
Page 42: Chapter 3 - Network Access
IMPORTANT: The default settings enable access to the SnapServer via all protocols supported by the SnapServer. As a security measure, disable any protocols not in use. For example, if no Mac or FTP clients need access to the SnapServer, disable these protocols in the Web Management Interface.
Page 43: View Network Information
SnapServer GuardianOS 7.2 Administrator’s Guide View Network Information View Network Information The Network > Information page displays the server’s current network settings. One column appears for each Ethernet port in use. Field definitions are given in the following table: Ethernet Interface Information Port Name The name of the Ethernet interface.
Page 44: Tcp/Ip Options
SnapServer GuardianOS 7.2 Administrator’s Guide TCP/IP Options Gateway Information Default Gateway The network address of the gateway is the hardware or software that bridges the gap between two otherwise unroutable networks. It allows data to be transferred among computers that are on different subnets.
Page 45 SnapServer GuardianOS 7.2 Administrator’s Guide TCP/IP Options Column Description IP Address • The IP address for the NIC or bond if known or not available if unknown. • Whether the IP address was obtained by DHCP or is Static. Bond Type...
Page 46: Configuring Tcp/Ip Settings
SnapServer GuardianOS 7.2 Administrator’s Guide TCP/IP Options Configuring TCP/IP Settings To configure the TCP/IP settings of a specific port or bond, click the name on the primary TCP/IP page. A secondary TCP/IP page displays the configuration options for the Ethernet port selected.
Page 47: Issues In Tcp/Ip Configuration
IP address. Issues in TCP/IP Configuration Consider the following guidelines when connecting a SnapServer to the network. Cabling for Single-Subnet, Multihomed, or Network Bonding Configurations • For a Single Subnet or Multihomed Configuration (Standalone) – Standalone treats each port as a separate interface.
Page 48 IMPORTANT: If you change the switch setting before you change the setting in the Web Management Interface, the SnapServer may not connect to the network. The Link LED on the SnapServer front panel will be off or amber if the server is not connected to the network. Procedure to Create a Bond On a SnapServer with two or more Ethernet ports, a bond can be created: 1.
Page 49: Windows Networking (Smb)
SnapServer GuardianOS 7.2 Administrator’s Guide Windows Networking (SMB) Windows Networking (SMB) Windows SMB and security settings are configured on the Network > Windows/SMB page of the Web Management Interface. You can configure these settings as a member of a Workgroup or an Active Directory Domain, as shown below: 10400317-003 05/2012 ...
Page 50: Support For Windows Networking (Smb)
Windows Networking (SMB) Support for Windows Networking (SMB) The default settings make the SnapServer available to SMB clients in the workgroup named Workgroup. Opportunistic locking is enabled, as is participation in master browser elections. Consider the following when configuring access for your Windows networking clients: Support for Microsoft Name Resolution Servers The SnapServer supports NetBIOS, WINS, and DNS name resolution services.
Page 51: Connect From A Windows Client
SnapServer using the guest account. Connect from a Windows Client Windows clients can connect to the SnapServer using either the server name or IP address. To navigate to the server using Windows Explorer, use one of these procedures: •...
Page 52: Connect A Mac Os X Client Using Smb
• smb://ipaddress Tip: To disconnect from the SnapServer, drag its icon into the Trash. You can also browse the servers in the Finder file window, under the Shared tab. Configure Windows/SMB Networking Windows SMB and security settings are configured from this page. The server can be configured as part of a Workgroup or an Active Directory Domain.
Page 53 ActDirDomName will not work. Enable Trusted SnapServers recognize trust relationships established between Domains the domain to which the SnapServer is joined and other domains (Active Dir Domain only) in a Windows environment by default. Select the checkbox to toggle this feature.
Page 54 Default setting is Plain. Enable Guest Account Check the Enable Guest Account checkbox to allow unknown users or users explicitly logging in as “guest” to access the SnapServer using the guest account. Clear the option to disable this feature. 10400317-003 05/2012  3-13...
Page 55 Domain filtering allows you to limit the number of domain users and groups that can be imported from the domain to the SnapServer. This is sometimes necessary in large domains to limit the system resources used to manage the user/group lists and reduce server 10400317-003 05/2012 ...
Page 56 SnapServer GuardianOS 7.2 Administrator’s Guide Windows Networking (SMB) overhead. It also is useful whenever the domain or domain forest exceeds the number of users and groups supported (100,000 each). It helps when the server is in a remote office with no domain controller and the domain users and groups are imported over a WAN connection.
Page 57 SnapServer GuardianOS 7.2 Administrator’s Guide Windows Networking (SMB) 5. At the second of two pages for Domain Filtering: The default setting is import all groups and all users. To filter the groups or users, enter just the ones to be imported. All others will be filtered out. If needed, groups and users can be deleted by highlighting the name and clicking Delete.
Page 58: Apple Networking (Afp)
The default settings provide access to AFP clients over a TCP/IP network. Mac clients connecting over AFP can log in to the server either as local users on the SnapServer or as Active Directory domain users (if the server belongs to a domain). For more granular control over client access for Mac users who do not belong to a recognized Windows domain, create local user accounts.
Page 59: Afp Procedures
Distinguishing Share Names on the Desktop and Finder By default, the Finder identifies SnapServer shares using only the share name. To display both the share name and the server name, the Add Server Name To Apple Shared Folder Names checkbox on the Network > Apple/AFP page of the Web Management Interface is enabled by default.
Page 60: Nfs Access
NFS Access NFS access to the server is enabled on the Network > NFS page of the Web Management Interface. By default, NFS access is enabled and any NFS client can access the SnapServer through the guest account. NOTE: Only NFSv2 and v3 are enabled by default. If you wish to enable NFSv4, select the Enable NFSv4 checkbox on the Network >...
Page 61: Nfs Procedures
SnapServer GuardianOS 7.2 Administrator’s Guide NFS Access Protocol Version Source 2.0, 3.0, 4.0 RFC 1094, RFC 1813, RFC 3530 Mount 1.0, 2.0, 3.0 RFC 1094 Appendix A, RFC 1813, RFC 3530 Lockd 1.0, 4.0 RFC 1094, RFC1813, RFC 3530 *NFSv4 ACLs are not supported.
Page 62 NFS-enabled share. To Mount Shares from NFS Clients A share on a SnapServer is equivalent to an exported filesystem on an NFS server. NFS users can mount SnapServer shares and access content directly, or mount a subdirectory of a share, using the following procedure: 1.
Page 63: Nis Domain
NIS domains are configured on the Network > NIS page of the Web Management Interface. The SnapServer can join an NIS domain and function as an NIS client. It can then read the users and groups maintained by the NIS domain. Thus, you must use the NIS server to make modifications.
Page 64: Ftp/Ftps Access
SnapServer’s guest user account and AllUsers group account. You can set share access and file access for anonymous FTP users by modifying permissions for these accounts. For more granular control over FTP access, you must create local user accounts for FTP users.
Page 65: Snmp Configuration
NOTE: FTP users cannot manage files or folders in the FTP root directory. SNMP Configuration The SnapServer can act as an SNMP agent. SNMP managers collect data from agents and generate statistics and other monitoring information for administrators. Agents respond to managers and may also send traps, which are alerts that indicate error conditions.
Page 66: Default Traps
SnapServer GuardianOS 7.2 Administrator’s Guide SNMP Configuration Default Traps A trap is a signal from the SnapServer informing an SNMP manager program that an event has occurred. The SnapServer supports the following default traps: Trap Initiating Action coldStart Whenever SNMP is enabled and the server boots.
Page 67: Web Access
SnapServer GuardianOS 7.2 Administrator’s Guide Web Access Option Description Server Location Enter information that helps a user identify the physical location of the server. For example, you might include a street address for a small business, a room location such as Floor 37, Room 308, or a position in a rack, such as rack slot 12.
Page 68: Configuring Http/Https
Using Web Root to Configure the SnapServer as a Simple Web Server When you enable the Web Root feature from the Network > Web page, you can configure your SnapServer to open automatically to an html page of your choice when a user enters the following in the browser field:...
Page 69 The Web Root can also be configured to support directory browsing independent of Web View (access through shares). NOTE: The SnapServer supports direct read-only web access to files. It is not intended for use as an all-purpose Web Server, as it does not support PERL or Java scripting, animations, streaming video, or anything that would require a special application or service running on the server.
Page 70: Web View
Accessing the Web Management Interface when Web Root is Enabled By default, when you connect to a SnapServer with Web Root enabled, the browser will load the user-defined HTML page or present a directory listing of the Web Root. To access the Web Management Interface (for example, to perform administrative functions, change a password, etc.), enter the following in the browser address field:...
Page 71: Isns Configuration
Properties. Select the Discovery Configuration tab, and check Perform Discovery. Check Use iSNS Server, enter the server name or IP Address, and click NOTE: After you have completed this procedure, all the iSCSI targets on the SnapServer automatically appear in the Microsoft Initiators target list.
Page 72: Chapter 4 - Dynamicraid Storage
Chapter 4 This chapter covers the key options of a DynamicRAID configuration used to manage your SnapServer storage pools and volumes with a maximum of flexibility. To determine which RAID configuration is appropriate for your needs, see “Should I use DynamicRAID or Traditional RAID?”...
Page 73: Storage Pools
Storage Pool Creation During the setup process, storage pools are created on the SnapServer using all disk drives available on the head unit and all attached expansion units. DynamicRAID always maximizes the space available based on the type of parity mode and size requested for the snapshot pool.
Page 74 SnapServer GuardianOS 7.2 Administrator’s Guide Storage Pools The example below demonstrates the notification of both a disk that has previously been used in a different system, and an incompatible drive. At the Create Storage Pool page, you can set these options:...
Page 75 SnapServer GuardianOS 7.2 Administrator’s Guide Storage Pools To Create a Storage Pool To create a new storage pool (on a unit that doesn’t have a storage pool already present): 1. At the Storage Pools page (Storage > Storage Pools), click...
Page 76: Storage Pool Properties
SnapServer GuardianOS 7.2 Administrator’s Guide Storage Pools Storage Pool Properties To access the Storage Pool Properties page for a storage pool, click the storage pool’s name. When you click the Head Unit Storage name in the Storage Pool list, the properties page for...
Page 77 SnapServer GuardianOS 7.2 Administrator’s Guide Storage Pools When you click an Expansion Unit Storage name in the Storage Pool list, the properties page for that specific expansion unit is shown: At the Storage Pool Properties page, you can edit these options:...
Page 78: View Disks From Storage Pool Properties Page
SnapServer GuardianOS 7.2 Administrator’s Guide Storage Pools View Disks from Storage Pool Properties Page To view all of the disks in a storage pool, from the Storage > Storage Pools page, select a storage pool to open the properties page, then click View Disks.
Page 79: Parity Management
SnapServer GuardianOS 7.2 Administrator’s Guide Storage Pools 2. Click the name of the storage pool being deleted. 3. At the Storage Pool Properties page, click Delete Storage Pool. 4. At the confirmation page, click Delete Storage Pool again. You are returned to the Storage Pools page. The Status for the unit should show No Storage .
Page 80 Adding Drives. Adding new disks to a storage pool sometimes requires the SnapServer to perform multiple queued operations. During this multi-step resynchronization process, the estimated data pool size will be displayed and may be different than the size currently displayed in the Data Pool Usage column.
Page 81: Volumes
SnapServer GuardianOS 7.2 Administrator’s Guide Volumes Volumes GuardianOS supports multiple volumes in a storage pool. During the initial creation of your DynamicRAID storage pool, an initial volume was also created. To view that volume (and create other volumes if needed), navigate to Storage > Volumes. To access the Properties page for a volume, click the volume name.
Page 82: Volume Properties
SnapServer GuardianOS 7.2 Administrator’s Guide Volumes To Create a New Volume 1. Navigate to Storage > Volumes. 2. Click the Create Volume button. 3. Choose the options for the new volume: • Select a storage pool name from the drop-down list.
Page 83: Volume Deletion
SnapServer GuardianOS 7.2 Administrator’s Guide Volumes 2. Click the volume name in the table. 3. At the Volume Properties page, change the options desired: • Edit the volume name using up to 32 alphanumeric characters and spaces. • Specify the maximum size of the volume: •...
Page 84: Chapter 5 - Traditional Raid Storage
This chapter covers the key options of a Traditional RAID configuration. It explains how best to use the Storage Guides and manage your RAID sets, volumes, and quotas. IMPORTANT: To simplify the management of your SnapServer RAID sets, it is recommended that you use the DynamicRAID option on your server and expansion units.
Page 85: Storage Guides
• Drive utilization • The number of available drives For example, in configuring the disk drives of a four-drive SnapServer, the decision whether to include a spare in the RAID depends on the value you place on capacity vs. high availability.
Page 86: Local And Global Spares
SnapServer GuardianOS 7.2 Administrator’s Guide Storage Guides Features RAID 0 RAID 1 RAID 5 RAID 6 RAID 10 Data Loss Risk Highest Lowest Lower Very Low Write Access Speeds Fastest Fast Medium Slower Faster Usable Capacity Highest Lowest High Medium...
Page 87: Raid Sets
SnapServer GuardianOS 7.2 Administrator’s Guide RAID Sets RAID Sets Use the Storage > RAID Sets page to manage RAID sets and their options. From the RAID Sets main page, you can do the following: • Create RAID Sets – If unassigned drives exist, a new RAID set can be created by launching a wizard.
Page 88 SnapServer GuardianOS 7.2 Administrator’s Guide RAID Sets Create RAID Sets If you choose not to use the Storage Guide wizards to expedite the configuration of your RAID sets, you can manually configure them using these steps: 1. Under Storage > RAID Sets, click Create RAID.
Page 89 SnapServer GuardianOS 7.2 Administrator’s Guide RAID Sets Do not mix drives of different capacity in a RAID 1, 5, 6, or 10 set. Because all CAUTION: drives within a RAID must be the same capacity, using mixed-capacity drives in the same RAID will result in wasted capacity.
Page 90 SnapServer GuardianOS 7.2 Administrator’s Guide RAID Sets 6. Verify your configuration, then click Next. A message appears confirming the creation of the RAID set, and how much storage space it provides. Before you can place any data on this RAID set, you must create a volume. Choose to create the volume now or later: •...
Page 91 SnapServer GuardianOS 7.2 Administrator’s Guide RAID Sets Click the Group RAID button to show the Group RAID Sets page. 1. Select (check) the RAID sets you want to include in the group and click Next. You will see a confirmation page.
Page 92 SnapServer GuardianOS 7.2 Administrator’s Guide RAID Sets From this page you can view the status, add another RAID set of the same type to the group, or delete the entire group. The status shows the following information: Label Description Group Table...
Page 93 RAID set will also become inaccessible. Depending on the cause, the RAID group may or may not be recoverable. For example, if a RAID group spans a SnapServer and an expansion unit and one of the RAIDs goes down because of a disconnected cable, the RAID group is fully recoverable by reconnecting the cable and rebooting the system.
Page 94 Storage > RAID Sets page and click the RAID Settings button. Note the following: • If the background disk scan is disabled, the SnapServer will still initiate a scan on a RAID if problems are detected on one of the RAID drives.
Page 95 SnapServer GuardianOS 7.2 Administrator’s Guide RAID Sets Manage Global Spares A spare is a disk drive that can automatically replace a damaged drive in a RAID 1, 5, 6, or 10. Designating a disk drive as a spare helps ensure that data is available at all times. If one disk drive in a RAID fails or is not operating properly, the RAID automatically uses the spare to rebuild itself without administrator intervention.
Page 96 SnapServer GuardianOS 7.2 Administrator’s Guide RAID Sets The following table shows details about member drives of that specific RAID: Label Description RAID Set The name of each RAID. Status The current condition of the RAID: • OK – The RAID is functioning properly.
Page 97: Volumes
SnapServer GuardianOS 7.2 Administrator’s Guide Volumes Adding disks is limited based on the type of RAID it is being made a member of: • Disks cannot be added to a RAID 0. • Disks can only be added to a RAID 1 as full members.
Page 98: Volume Creation
SnapServer GuardianOS 7.2 Administrator’s Guide Volumes never to use snapshots. Keep in mind that you can increase or decrease snapshot pool size at any time, but volume space can only be increased. For more information, see “Estimating Snapshot Space Requirements” on page 6-6.
Page 99 SnapServer GuardianOS 7.2 Administrator’s Guide Volumes At the confirmation page, click Create Volume a third time to create the volume. At the successful creation page, click Create Share to provide access to this new volume. This opens the Security > Shares option page. Enter the options you want and click the Create Share button again.
Page 100: Volume Properties
SnapServer GuardianOS 7.2 Administrator’s Guide Volumes Volume Properties By clicking a volume’s name on the main page, details of that particular volume are shown on a Volume Properties page. From this secondary page, you can: • Change the volume name.
Page 101 SnapServer GuardianOS 7.2 Administrator’s Guide Volumes • Creating a New RAID Set – If all capacity on the existing RAID set is allocated, and either (1) a sufficient number of drives to create a new RAID set exists, or (2) a RAID set of the same type with excess capacity exists, then the Expand Volume button appears.
Page 102: Quotas
How the SnapServer Calculates Usage In calculating usage, the SnapServer looks at all the files on the server that are owned by a particular user and adds up the file sizes. Every file is owned by the user who created the file and by the primary group to which the user belongs.
Page 103: Enable/Disable Quotas
SnapServer GuardianOS 7.2 Administrator’s Guide Quotas From this page, you can: • Enable/disable quotas on the volume by clicking the far left Enabled link (or the far right Default Quota Limit if it exists). Enable/Disable Quotas When you click the Enabled status link (left-most column in the Quota table), a secondary page is shown for managing the quota properties.
Page 104: Displaying Quotas
SnapServer GuardianOS 7.2 Administrator’s Guide Quotas Displaying Quotas The Storage > Quotas page does the following: • Displays current data usage by all users and NIS groups that have consumed data on the selected volume. • Allows you to configure individual user and NIS group quotas (individual user/group quotas override the default quota).
Page 105: Chapter 6 - Other Storage Options
Other Storage Options Chapter 6 Once the RAID sets have been configured using either the DynamicRAID or Traditional RAID options, you can configure the other three storage options for your SnapServer. DynamicRAID Configuration Traditional RAID Configuration For information on the DynamicRAID configuration option, see Chapter 4, “DynamicRAID...
Page 106: Snapshots
“Configuring VSS/VDS for iSCSI Disks” on page 6-22. To manage the snapshot options using the SnapServer Web Management Interface, go to Storage > Snapshots. These options are available in the Snapshots section of the Web Management Interface: Action Procedure Create Snapshot .
Page 107: Creating Snapshots
SnapServer GuardianOS 7.2 Administrator’s Guide Snapshots Action Procedure Adjust Snapshot Space NOTE: Traditional RAID only. Snapshot Space button, then click the RAID set name for Click the the snapshot space you want to adjust. You can adjust the amount of space allotted for snapshots on each RAID set or RAID group.
Page 108 In the Duration field, specify how long the snapshot is to be active in hours, days, weeks, or months. The SnapServer automatically deletes the snapshot after this period expires, as long as no older unexpired snapshots exist that depend on it. If any such snapshot exists, its termination date is displayed at the bottom of the page.
Page 109: Schedule Snapshots
Step 3: Set the backup software to archive the latest version of the snapshot. The SnapServer makes it easy to configure your backup software to automatically archive the most recent snapshot. Simply configure your backup software to copy the contents of directory within the snapshot share you created.
Page 110: Snapshot Space
Snapshot data grows dynamically for as long as a snapshot is active and as long as there is enough space available in the snapshot space to store them. When the snapshot space approaches its capacity (at about 95 percent), the SnapServer deletes the oldest snapshot’s data to create space for more recent snapshot data.
Page 111: Snapshot Properties
SnapServer GuardianOS 7.2 Administrator’s Guide Snapshots Allocate about 10% of RAID set if Allocate about 25% of RAID set if • Activity is write-light. • Activity is write-heavy. • Write access patterns are concentrated in • Write access patterns are randomized a few places.
Page 112 SnapServer GuardianOS 7.2 Administrator’s Guide Snapshots To access the Rollback option, navigate to the Storage > Snapshots page. Click the name of the Snapshot you want to use that is shown in the left-most column. At the displayed Snapshot Properties page, click the Rollback button.
Page 113: Iscsi Disks
“target portal” and an iSCSI disk as a “target.” To use the SnapServer as an iSCSI target, you need to configure iSCSI on both the client initiating the iSCSI connection, and on the SnapServer. Use the information presented here in conjunction with the documentation supplied with your initiator to install, configure, and connect the iSCSI initiators to the SnapServer.
Page 114: Configuring Iscsi Initiators
SnapServer GuardianOS 7.2 Administrator’s Guide iSCSI Disks • SnapServer Online Help – Available from the Storage > iSCSI page, the online help provides details on creating and managing iSCSI disks on SnapServers. • RFC3720: Internet Small Computer System Interface (iSCSI) – Detailed specification for the iSCSI protocol, available from http://www.ietf.org.
Page 115 Windows implementation, installed applications, or other components on the Windows system whose registry is being modified. The result of any modifications to the Windows registry can vary. Implied outcomes of any modification suggested by SnapServer are NOT guaranteed, and may not be supported.
Page 116 To Mount an iSCSI Disk Without a Drive Letter. To complete this procedure, you must create and format an iSCSI target on the SnapServer and connect to this iSCSI disk using the Microsoft initiator. You must also have an existing NTFS volume on a local disk within the Windows server, initiating the connection.
Page 117 Under Connected Targets, highlight the specific iSCSI disks you want to expand. c. Click LogOff. This will log you off the specific target. 4. Verify that you have additional space available on the SnapServer to expand an existing volume: a.
Page 118 8. Exit the Computer Management tool. 9. Restart the necessary application services. To Configure the QLogic iSCSI Initiators for Microsoft Windows. The Overland Storage- recommended QLogic QLA4010 and QLA4050/52c HBAs are iSCSI adapters that appear as a SCSI adapter instead of a network adapter in Windows Device Manager. Before a QLA4010 or QLA4050/52c can successfully connect to iSCSI targets, you must: •...
Page 119 /etc/iscsi.conf DiscoveryAddress=192.3.2.193 Username=b Password=PasswordForB System A and B can connect to their own iSCSI disks on the same SnapServer (IP address 192.3.2.193) without the possibility of data corruption caused by sharing the same iSCSI disk. iSCSI Configuration for Novell NetWare...
Page 120 When you install VMware ESX Server or vSphere Server, the iSCSI Initiator is automatically installed. On connecting to the SnapServer targets, the VMware ESX 3.5 Server initiator will find all iSCSI disks and automatically log into them. If iSCSI disks are shared across multiple servers, you can use CHAP authentication to restrict the number of iSCSI disks the VMware initiator can access.
Page 121: Iscsi Configuration On The Snapserver
NOTE: If iSCSI is used on a SnapServer with more than one Ethernet port, Mac OS X iSCSI clients can encounter connectivity issues if multiple ports are connected to one or more networks. To avoid these issues, configure the server from Network > TCP/IP to enable and connect only one standalone interface or one bonded pair (Load Balance, Failover, etc.) to a single...
Page 122 To ensure the fastest possible write performance, SnapServers can buffer up to 1GB of data to efficiently handle data being transmitted to a SnapServer. This widely accepted method of improving performance is not without some risk. For example, if the SnapServer were to suddenly lose power, data still in cache would be lost.
Page 123: Create Iscsi Disks
Disk Naming Conventions iSCSI disks are assigned formal IQN names. These appear as the iSCSI device names that the user chooses (or types) when connecting from a client initiator to the SnapServer target, and also on the iSCSI Disk details page.
Page 124 SnapServer GuardianOS 7.2 Administrator’s Guide iSCSI Disks (Traditional RAID uses “Volume”) NOTE: You cannot delete or edit an iSCSI disk until all clients have been disconnected from that disk. The creation process involves first defining iSCSI parameters, then setting up security, and finally confirming your settings.
Page 125: Edit An Iscsi Disk
Disabling a write cache for an iSCSI Disk does not disable the write cache for any other iSCSI Disk or any other resources on the SnapServer. No active sessions can be connected to the iSCSI disk when enabling or disabling the write cache.
Page 126: Delete An Iscsi Disk
Windows Server 2008 R2 Backing up an iSCSI Disk using VSS Snapshots. Windows VSS-compatible backup applications can create snapshots of SnapServer iSCSI disks to perform consistent backups of application data without stopping the application, using the snapshot instead of the live volume as the backup source.
Page 127 The required space is 10% of the size of the iSCSI disk per snapshot. If this amount of free space is not available on the pool or volume, the VSS snapshot will not be created and an error will be reported by the SnapServer VSS hardware provider to the Windows event log.
Page 128 Disks Creating and Managing iSCSI LUNs Using VDS 1. Create the volume and RAID set for the iSCSI disk on the SnapServer using the Web Management Interface (Storage > Volumes). The volume and RAID set must be created on the SnapServer before the iSCSI disk can be created using a VDS application such as Microsoft’s Storage Manager for SANs.
Page 129: Disks
SnapServer GuardianOS 7.2 Administrator’s Guide Disks Deleting VSS/VDS Client Access 1. From the Storage > iSCSI page, click the VSS/VDS Access button. 2. Select the VSS/VDS client you want to delete from the VSS/VDS Clients list, and click Delete. 3. Click Yes to confirm the deletion, then click OK.
Page 130: Replacing Disk Drives
A failed disk drive can be removed and replaced anytime if two or more disks are installed in the SnapServer. However, only one disk at a time can be replaced. While dual parity allows two disks to be swapped out simultaneously, they will only be incorporated one at a time.
Page 131 If a disk drive fails, the Administration page displays a Disk Failure message and an icon with a link to the Disks page. This section describes how to remove and replace drives in a RAID set of a SnapServer configured in Traditional RAID mode. When removing a working disk drive, note the following: •...
Page 132: Adding Disk Drives
Adding Disk Drives If empty slots are available, you can add an Overland-approved disk drive to expand the storage pool/volume on your SnapServer or SnapExpansion unit. Drives of different rotational speed (for example, SAS and SATA drives) can be combined in the same server.
Page 133 To add a new disk drive to a DynamicRAID: 1. Insert the drive into an empty SnapServer slot. It appears in the Storage > Disks map as “Disk Unused” (for a new disk) or “Disk is Foreign”...
Page 134 SnapServer GuardianOS 7.2 Administrator’s Guide Disks 4. At the bottom of the properties page, verify or change the Parity Mode and Snapshot Pool settings. 5. Click OK to continue. 6. At the confirmation page, click Save Changes. 7. At the success notice page, click OK.
Page 135 To add a new disk drive as a Local Spare for a Traditional RAID set: 1. Insert the drive into an empty SnapServer slot. It appears in the Storage > Disks map as “Disk Unused” (for a new disk) or “Disk is Foreign”...
Page 136: Expansion Units
SnapServer DX1 or DX2 systems. The SnapExpansion supports SAS and SATA hard drives and allows capacity growth by creating additional DynamicRAID storage pools. • By adding the optional SAS expansion card to the SnapServer DX1, you can attach up to three SnapExpansion chassis to grow storage up to 120TB.
Page 137 RAID system being used. DynamicRAID Each unit in the SnapServer system has its own storage pool which DynamicRAID manages. Traditional RAID The head unit and expansion disk drives can be combined as necessary. For example, to create one large RAID set, you could delete the existing RAID sets on both the head unit and the expansion unit, then combine all drives into one high-capacity storage system.
Page 138: Integrating Orphaned Expansion Units
The serial number of the server with which the expansion unit was last incorporated If you want to use the expansion unit with the SnapServer, click the checkbox next to the orphaned expansion unit you want to integrate, and click OK.
Page 139: Chapter 7 - Security Options
To accommodate NFS clients, the SnapServer can also join an NIS domain, and the SnapServer can look up user IDs (UIDs) and group IDs (GIDs) maintained by the domain. For authentication control beyond the guest account, Mac and FTP client login credentials can be created locally on the server.
Page 140: Guidelines For Local Authentication
Web Management Interface, SnapServer Manager, or SSH. A local user or group is one that is defined locally on the SnapServer using the Web Management Interface. The default users and groups listed below cannot be modified or deleted.
Page 141: User And Group Id Assignments
User and Group ID Assignments The SnapServer uses the POSIX standard to assign UIDs or GIDs, in which each user and group must have a unique ID. This requirement applies to all users and groups on the SnapServer, including local, Windows, and NIS users and groups.
Page 142: Security Guides
SnapServer GuardianOS 7.2 Administrator’s Guide Security Guides Security Guides Security Guides are special wizards to guide you through: • Setting up Windows Active Directory security. • Giving users or groups share-level access to an entire volume. • Giving users or groups share-level access to a folder on a volume.
Page 143: Entire Volume Security Guide
SnapServer GuardianOS 7.2 Administrator’s Guide Security Guides Entire Volume Security Guide This wizard guides you through the four steps it takes to give share-level access to a folder on a volume. Folder on Volume Security Guide This wizard guides you through the five steps it takes to give share-level access to an entire volume.
Page 144: Shares
(see “File-level Security” on page C-5). The first step to securing a SnapServer is to specify access at the individual share level. Administrators can assign read-write or read-only share access to individual Windows (and local) users and groups.
Page 145: Create Shares
SnapServer GuardianOS 7.2 Administrator’s Guide Shares Create Shares To create a new share, you need, at a minimum, to specify the share name, volume, and folder path. Click to display options shown below By clicking the Advanced Share Properties link, additional options are displayed. Use these options to hide the share from network browsing, select the protocols supported, and create a snapshot share associated with this share.
Page 146 SnapServer GuardianOS 7.2 Administrator’s Guide Shares 4. Choose a security model by selecting either from the Windows/mix UNIX drop-down list. The security model option is only available under the following circumstances: • Traditional RAID – When pointing the share at the root of a volume or one directory down from the root of the volume.
Page 147: Edit Share Properties
SnapServer GuardianOS 7.2 Administrator’s Guide Shares Edit Share Properties Once a share has been created, you can change its name, description and the advanced properties. You cannot change the volume (or path). If you need to change the volume, you must delete the share and create a new one on the other volume.
Page 148: Delete Shares
SnapServer GuardianOS 7.2 Administrator’s Guide Shares Delete Shares To delete a share, go to Security > Shares > Share Properties (displayed by clicking the share name). 1. Click the Delete Share button at the bottom. 2. At the Delete Share confirmation page, click the Delete Share button again.
Page 149 SnapServer GuardianOS 7.2 Administrator’s Guide Shares Share Access Behaviors Administrators tasked with devising security policies for the SnapServer will find the following share access behaviors informative: • Share access defaults to full control – The default permission granted to users and groups when they are granted access to the share is full control.
Page 150 SnapServer GuardianOS 7.2 Administrator’s Guide Shares • Interaction between share-level and file-level access permissions – When both share-level and file-level permissions apply to a user action, the more restrictive of the two applies (see “File-level Security” on page C-5). Consider the following examples: Example A: More restrictive file-level access is given precedence over more permissive share-level access.
Page 151 SnapServer GuardianOS 7.2 Administrator’s Guide Shares The default permission granted to users and groups when they are granted access to the share is full access. You may restrict selected users and groups to read-only access. Share-Level Access Permissions Full access Users can read, write, modify, create, or delete files and folders within the share.
Page 152 Security > Shares page. NOTE: The syntax used in this file is equivalent to standard Linux exports file syntax. If the SnapServer detects any errors in syntax, a warning message appears. You can choose to correct or ignore the error warning.
Page 153 If Kerberos is enabled, access is applied uniformly to all Kerberos-authenticated NFSv4 clients connected using the matching Kerberos option. Host-based access as described in The SnapServer Exports File Default Options still applies to NFSv2 and v3 clients when Kerberos is enabled, but it does not apply to NFSv4 clients.
Page 154: Local Users
SnapServer GuardianOS 7.2 Administrator’s Guide Local Users Local Users The Local Users page (Security > Local Users) provides all the options to manage local users. Local users are users that are known only to the server being accessed. Each server running GuardianOS comes with two predefined users: admin and guest.
Page 155: Edit User Properties
SnapServer GuardianOS 7.2 Administrator’s Guide Local Users Option Description Name Use up to 31 alphanumeric characters and the underscore. Full Name Use up to 49 alphanumeric characters (includes spaces). Input in this field is optional. Password Passwords are case-sensitive. Use up to 15 alphanumeric characters without spaces.
Page 156: User Password Policies
SnapServer GuardianOS 7.2 Administrator’s Guide Local Users Option Description Name Cannot be modified. Full Name Use up to 49 alphanumeric characters (includes spaces). Input in this field is optional. Password Passwords are case-sensitive. Use up to 15 alphanumeric characters. Leave this field blank to keep the existing password.
Page 157 SnapServer GuardianOS 7.2 Administrator’s Guide Local Users Click the Password Policy button to make changes to all the local user password settings. To Set Password Policy for Local Users 1. On the Security > Local Users page, click the Password Policy button.
Page 158: Assign User To Group
SnapServer GuardianOS 7.2 Administrator’s Guide Local Users Assign User to Group Use the Groups for Local Users page (Security > Local Users > Groups) to make changes to a local group membership. To Add or Remove Users from Groups 1. On the Groups for Local User page, select a user.
Page 159: Local Groups
SnapServer GuardianOS 7.2 Administrator’s Guide Local Groups To Delete a Local User 1. On the Security > Local Users page, select the user to be deleted. 2. Click Delete. 3. The confirmation page will display. Click Delete User to delete the selected user (or click Cancel).
Page 160: Edit Group Properties
SnapServer GuardianOS 7.2 Administrator’s Guide Local Groups To Create a New Local Group 1. On the Local Groups page, click Create. 2. On the Create Local Group page that opens, enter the following information: Option Description Group Name Use up to 31 alphanumeric characters and the underscore.
Page 161: Specify Users In Group
SnapServer GuardianOS 7.2 Administrator’s Guide Local Groups To Edit Local Group Properties 1. On the Security > Local Groups page, select the group you want to edit and click Properties. 2. On the page that opens, you can change the GID. For information on available UID ranges, see “User and Group ID Assignments”...
Page 162: Security Models
Security Models There are two file-level security models that can be used by a SnapServer: Windows/Mixed and UNIX. In Traditional RAID, the security model can be configured on volumes and the first set of folders created in the root of the volumes. In DynamicRAID, the security model only can be configured on the volumes.
Page 163: Id Mapping
SnapServer GuardianOS 7.2 Administrator’s Guide ID Mapping 4. To change the security model of a folder: a. Click the security model icon (“W” or “U”) of the folder. b. From the drop-down list, select the security model type desired, and click OK.
Page 164: Configure Id Mapping
Windows domain user and the local or NIS user. Example: John Smith is a local user on a SnapServer, as well as having a user ID on a Windows domain. John’s quota for the SnapServer has been set to 200 MB. The administrator of the SnapServer maps the Windows domain user identification for John Smith to the local identification for John Smith, giving both IDs access to John’s 200 MB.
Page 165: Remove All Mappings
Remove all Mappings 1. The Remove All Mappings button allows you to remove all ID mappings on the SnapServer. Click this only if you want to remove all ID mappings. 2. A confirmation page appears. Click Remove All Mappings. 3. A page is displayed providing an option to remove mappings from all existing files and folders on the filesystems.
Page 166: Configure Home Directories
Configure the client to mount the home directory root for all users, and then configure each user account on the client to use the user-specific directory on the SnapServer as the user’s home directory. • For FTP/FTPS, local users will automatically be placed in their private home directory when they log in.
Page 167: Chapter 8 - System Monitoring
System Monitoring Chapter 8 This chapter addresses the options for monitoring the SnapServer. Here you can view the system status and other activities. Topics in System Monitoring: • System Status • Active Users • Open Files • Event Log •...
Page 168: System Status
Use the System Status page (Monitor > System Status) to assess the status of the SnapServer and any attached expansion units. SnapServer Status The following status fields will be displayed for the SnapServer (head unit). Any critical messages will be displayed in red. Field...
Page 169: Expansion Unit Status
SnapServer GuardianOS 7.2 Administrator’s Guide Active Users Field Description Ambient Temp. The temperature of the space around the SnapServer. CPU Temp. Current CPU temperature. Power Supply The status of power supply modules Fan Status The status of fan modules. Expansion Unit Status The following status fields will be displayed for each expansion unit.
Page 170: Event Log
SnapServer GuardianOS 7.2 Administrator’s Guide Event Log Event Log Use the Event Log page to view a log of operations performed on the server. Entries are color coded according to severity as described in the following table: Background Color Entry Type...
Page 171: Tape Monitor
SnapServer GuardianOS 7.2 Administrator’s Guide Tape Monitor Tape Monitor Use the Tape Monitor page to view read-only details on the SCSI and USB tape devices attached to the server. Field Description Device Model The manufacturer’s model for the device. Device Type Type of tape device: either Sequential-Access (tape drive) or Medium- Changer (for example, robotic arm for a tape library).
Page 172: Chapter 9 - Maintenance
Maintenance Chapter 9 Clicking the Maintenance tab on the Web Management Interface displays seven options used to maintain your SnapServer appliance and the GuardianOS 7.2 software. Topics in Web Management Interface • Shutdown and Restart • Factory Defaults • Disaster Recovery •...
Page 173: Shutdown And Restart
NOTE: SnapServers have a persistent power state. When a physical loss of power occurs, the SnapServer returns to the same operation it had when the power went out. Therefore, if the system is powered down prior to a power loss, it will remain powered down when the power is restored.
Page 174: Factory Defaults
Each reset option requires a restart of the server. To prevent possible data CAUTION: corruption or loss, make sure all users are disconnected from the SnapServer before proceeding. Navigate to the Maintenance > Factory Defaults page in the Web Management Interface, select one of the following options, and then click OK: •...
Page 175: Disaster Recovery
It also includes what to do if all access to the data on a SnapServer is cut off due to a hardware or software failure. Focus is placed on the procedures for: 10400317-003 05/2012 ...
Page 176: Backing Up Server And Volume Settings
Backing Up Server and Volume Settings In addition to backing up the data stored on the SnapServer, you may also back up the server’s system and volume settings. The Disaster Recovery page allows you to create the files you need to restore these settings: •...
Page 177: Restoring Original Server And Volume Configurations
SnapDRImage file to a safe location on another server or backup medium. (See The SnapDRImage File and the Volume Files for file names and paths.) This strategy ensures that if the filesystem on the SnapServer is corrupted, the image file will be available to restore server settings.
Page 178: Rejoining The Server To A Windows Domain
SnapServer DX1 configured for peak performance in your network environment, you can create a SnapDRImage of this server, then apply the SnapDRImage to a new SnapServer DX1. The server settings and configuration would be identical to the first. “Cloning a Server” on page 9-8 for details.
Page 179: Replacing A Server
Any third-party license keys you have not purchased through Overland Storage will be lost. If you have installed data replication or management utilities such as Snap EDR, you will need to re-install and/or relicense them for use with the new server.
Page 180: Data Import
Use the Data Import page to import (migrate) data from a legacy SnapServer or other computer that supports CIFS or NFS (v2 or v3) to a new SnapServer. The Data Import feature can be used to copy or move files and folders from a server on the network (Source) to your SnapServer (Target).
Page 181: Setting Up A Data Import Job
Path field blank. NOTE: Wildcards are not supported when specifying the path to import. Target: Volume Specify the volume on the target SnapServer where you want the data imported. 10400317-003 05/2012  9-10 ©2010-12 Overland Storage, Inc.
Page 182 SnapServer GuardianOS 7.2 Administrator’s Guide Data Import Option Description Path Specify the path to the target SnapServer where you want the data imported. Options: Copy (source data is maintained) or Import Type Options for the import data are to Move (source data is removed during copy). If Verify imported data is enabled, the Move option removes the original data after the verification is complete.
Page 183: Stopping An Import Job
If you are importing from a UNIX server to a UNIX root directory, UNIX permissions for UIDs/GIDs are copied exactly from source to target; thus, identities of the users and groups will be best retained if the SnapServer belongs to the same NIS domain as the UNIX server. Importing Between Conflicting Security Models When importing from a UNIX source to a Windows root directory, UNIX permissions will be retained and the security personality on the resulting files and directories will be UNIX.
Page 184: Os Updates
2. Click Browse on the OS Update page, locate the downloaded file, and select it. 3. Click OK. The SnapServer uploads the software package and then prompts you to reboot the server to perform the upgrade. Or click Cancel to stop the update.
Page 185: Configuring Update Notification
Support The Support page provides an easy way to contact Overland Technical Support. Once your SnapServer has been registered, Phone Home Support becomes available for use. Phone Home Support emails system logs and files that contain information useful for troubleshooting purposes to Overland Storage technical support. See “Phone Home Support”...
Page 186: Maintenance Tools
SnapServer GuardianOS 7.2 Administrator’s Guide Maintenance Tools To Register Your Server NOTE: To use this feature, access to the external Internet is required. Go to Maintenance > Support > Registration and click the Click here link to launch the online registration page.
Page 187 • License event – One of the trial licenses included on the SnapServer is about to expire. A notification email will be sent 14 days before the license expires. One day before the license expires another email will be sent. It is recommended that, if you are not acquiring a license key for the SnapExtension that is expiring, you turn off the SnapExtension.
Page 188: Host File Editor
Maintenance Tools Host File Editor Use this page to identify backup or media servers in the SnapServer’s hosts file. This page allows you to supply a hostname-to-ip address mapping that persists across system reboots. Click Add Host File Entry, complete the fields as described on the following table, and then click Add Host File Entry again.
Page 189: Checking Filesystems
It is only recommended that you run this level if you have been advised to do CAUTION: so by SnapServer Technical Support, or if Repair errors has failed to solve the problem and you are willing to risk loss of data.
Page 190 SnapServer GuardianOS 7.2 Administrator’s Guide Maintenance Tools 5. To view a log of the results, click the View Log button after the filesystem check completes. To Check the Root Filesystem Checking the Root Filesystem (Maintenance > Tools > Check Root Filesystem) provides a thorough filesystem check on the root.
Page 191: Chapter 10 - Misc. Options
When you first log in to the GuardianOS, the Web Home page is displayed. Once logged in, you can switch between the Web Home page and the Admin Home page using the Home ( icon. 10400317-003 05/2012  10-1 ©2010-12 Overland Storage, Inc.
Page 192: Web Home
SnapServer GuardianOS 7.2 Administrator’s Guide Home Pages Web Home The Web Home page shows a list of all the shares on the SnapServer. This page also provides three key administrative function links: • Change Password ( ) – Takes you to the Change Password page where you can change your administration password.
Page 193 Home Pages • Switch User (Logout) ( ) – Automatically logs out the current user and displays the Login page for the new user to gain access to the SnapServer. • Administration – Displays the Admin Home page (see “Admin Home” on page 10-4).
Page 194: Admin Home
) icons on the Web Home page. It provides a high- level view of the SnapServer status, the amount of total storage being used, and a link to find out what’s new in GuardianOS. The tabs at the top provide access to the various functions and features of the GuardianOS.
Page 195: Snapextensions
The SnapExtensions icon ( ) opens the SnapExtensions page. This page is used to manage the SnapExtensions installed on your SnapServer. If any SnapExtensions are installed, you can click the SnapExtension name in the table to display the management page for that extension.
Page 196: Snap Finder
Snap Finder Snap Finder ( ) is a powerful tool that lists all the SnapServer and REO 4600 appliances on your network and on a remote network segment if so configured, and shows the current status. Click the server name (if you have server name resolution) or IP address of a server to access it through the Web Management Interface.
Page 197 SnapServer GuardianOS 7.2 Administrator’s Guide Snap Finder NOTE: You can sort the columns (ascending or descending order) by clicking the column head. To enable remote discovery of SnapServers on a different subnet or to display a warning icon for servers with an enabled Ethernet port that has no link, click the Properties button to open the Snap Finder Properties page.
Page 198: Snap Finder Properties
SnapServer GuardianOS 7.2 Administrator’s Guide Snap Finder Snap Finder Properties Anyone with administrative privileges can view or edit the Snap Finder properties. Click the Properties button to access the Snap Finder Properties page. From this screen you can select to display a warning icon for servers with an enabled Ethernet port that has no link and enable remote discovery of SnapServers on a different subnet.
Page 199: Change Password
SnapServer GuardianOS 7.2 Administrator’s Guide Change Password Change Password To enhance the security of your SnapServer, it is recommended that users change their passwords regularly. This is done using the Change Password page. Changing Your Password 1. On the Home page, click the Change Password link ( 2.
Page 200: Mgmt. Interface Settings
SnapServer GuardianOS 7.2 Administrator’s Guide Mgmt. Interface Settings Mgmt. Interface Settings The Web Management Interface default background is light blue with the stylized “O” symbol. This can be changed to a solid blue background on the Web Management Interface Settings page by clicking the Site Map icon ( ), then Mgmt.
Page 201: Chapter 11 - Ca Antivirus Software
• The Move Directory • Log View NOTE: Antivirus functions or options not relevant to the SnapServer have been disabled in the configuration GUI. Antivirus Dependencies The SnapServer implementation of CA Antivirus software includes the following features: HTTP Access and Antivirus Configuration . To access the CA Antivirus configuration interface, HTTP must be enabled on the Network >...
Page 202: Launching The Ca Antivirus Gui
GuardianOS Web Management Interface, and then click Login. The antivirus GUI box opens. The Local Scanner View Use the Local Scanner view to scan a SnapServer for infected drives, folders, files, or disks on demand. 10400317-003 05/2012 ...
Page 203: Scan Jobs
Scan Jobs Component Description Root Directory Displays the directory structure of the SnapServer. As in Windows Explorer, click folder icons to navigate the structure and display subfolders and files in the right-hand pane. Move Folder May contain infected files. The administrator can instruct the software to automatically move infected files to this directory.
Page 204: Running A Manual Scan Job
Step 1: In Local Scanner View, select the folders you want to scan. The left-hand pane displays the directory structure of the SnapServer. A red check mark on a folder or file indicates that it is selected for scanning. (By default, all directories and files are selected for scanning.) Click folders or files to toggle file/folder selection on or off.
Page 205: Signature Updates
Method Description Use FTP to download the update files from the Computer Associates FTP site. You can also use FTP to distribute signature updates from one SnapServer (or any FTP server) to another. NOTE: When using FTP, the user name and password are passed as clear text.
Page 206: Updating A Snapserver Without Internet Access
FTP option from the list on SnapServers without Internet access. If you have more than one SnapServer with no Internet access, you can perform the previous procedure on just one of them (or any Windows/SMB server), and then configure your other SnapServers to get the update from that server automatically via SMB by specifying the UNC of the server containing the signature files.
Page 207: Verifying Download Events
\\server_name\share_name where server_name is the name of the server, and share_name is the name of the share providing access to the files. (On a SnapServer, the update files must reside on the root of the share.) 4. Click OK. The path you entered appears in the Download Sources list box.
Page 208: Alert Options
SnapServer GuardianOS 7.2 Administrator’s Guide Alert Options Alert Options Alert options allow you to tailor the notification information that is provided to the Alert Manager, cut down on message traffic, and minimize the dissemination of notifications that are not critical. To set alert options, select Alert Options from the Scanner menu. The Alert...
Page 209: Log View
SnapServer GuardianOS 7.2 Administrator’s Guide Log View Log View The Log View provides easy access to detailed information on scan, distribution, and other events. To access this view select Log View from the View menu. Option Description Local Scanner Displays summary information about scan jobs that have run.
Page 210: Appendix A - Dynamicraid Overview
Additional Information on DynamicRAID Sizing About DynamicRAID • To increase the capacity of the storage pool when the SnapServer is fully populated, you can replace drives, one at a time, with larger-capacity drives. Replacing drives can only be done when the DynamicRAID is healthy.
Page 211: Should I Use Dynamicraid Or Traditional Raid
All of its features apply equally to both file sharing and iSCSI volumes created on the SnapServer NAS system. DynamicRAID uses clear visible indicators on the drive bays to illustrate what can or cannot be done to that bay, thus reducing user error and negating the need for any required skill set or training for operation.
Page 212 I need to be able to optimize parity based on the number of drives inserted into the system.  I need the SnapServer to configure and manage the RAID array size and parity.  I need to manually configure the RAID array.
Page 213: Setting Up Dynamicraid
RAID Type Selection, choose DynamicRAID and the type of parity desired. The SnapServer automatically configures the RAID array, and the user may optimize the parity according to the number of drives inserted into the system. A storage pool is then created that can be divided into volumes for different applications or user groups.
Page 214: Storage Expansion
During the setup process, storage pools are created on the head unit and each expansion unit using all disk drives available in that unit. More capacity can be added to a SnapServer over time by inserting or replacing drives, then adjusting Storage Pool properties. Volumes can be added and removed at will, and all volumes share the same underlying pool of storage.
Page 215 SnapServer GuardianOS 7.2 Administrator’s Guide Additional Information on DynamicRAID Sizing For example, a large capacity drive (such as 1 TB and 2 TB SATA drives) will use 500 GB partitions for the storage pool while a smaller capacity drive (such as 300 GB and 600 GB SAS drives) will use 300 GB partitions.
Page 216: Appendix B - Backup Solutions
Backup Solutions Appendix B This appendix provides a brief description of the supported backup solutions and, where applicable, gives instructions on how to install the solutions on the SnapServer. Topics in Backup Solutions: • Backup and Replication Solutions Table •...
Page 217: Integrated Backup Solutions
Snap EDR provides server-to-server synchronization by moving, copying, or replicating the contents of a share from one SnapServer to another share on one or more different SnapServers. It comes preinstalled on some servers with a 45-day free trial, or it can be downloaded from the SnapServer website.
Page 218: Off-The-Shelf Backup Solutions
• Backup and media server IP addresses – Most backup agents need to know the IP addresses of the backup and media servers you plan to use with the SnapServer. Use the Maintenance > Host File Editor page in the SnapServer’s Web Management Interface to supply a host-name-to-ip-address mapping that persists across system reboots.
Page 219: Preinstallation Tasks
• Location of the SnapServer backup and restore path – Backup servers often request the path for backup and restore operations on the SnapServer. When you configure a backup server to see the agent or client running on the SnapServer, use the following path: /shares/sharename where sharename is the name of the share to be backed up.
Page 220: Installing The Ca Arcserve Agent
This section explains how to install the CA ARCserve Agent versions 11.5 and 12.0. Consider these important points: • This procedure assumes that you are using the default SnapServer configuration; and you have created a directory called agent (to which to copy your agent/client files) on...
Page 221: Installing The Symantec Backup Exec Ralus Agent
Uninstall ARCserve Agent 1. If you still have the tar or install directory that you copied to the SnapServer when you installed the ARCserve Agent, the uninstall script will be in that directory. If you do not have the directory or tar, copy the files again from the ARCserve CD or get them from Computer Associates.
Page 222 /etc/hosts Install Backup Exec RALUS Agent 1. From a network client, create a ralusinstall directory on SHARE1 of the SnapServer, then copy the RALUS agent tar file or contents of the RALUS agent CD to the directory.
Page 223: Installing The Symantec Netbackup 6.5 Client
NOTE: During the installation process, you may see an error message about the failure to add root to the beoper group. This error will be resolved in the following step. 4. Add the user root to the group beoper manually (or any other local SnapServer user you wish to use to perform backups):...
Page 224 Install NetBackup v6.5 Client 1. Using a network client, copy the directory called NBClients from the Client CD to a directory on a share (for example, SHARE1 or Agent) on the SnapServer. 2. In SSH, install the files: cd /shares/SHARE1/NBClients/catalog/anb ./client.inst...
Page 225: Installing The Emc Networker Client
Off-the-Shelf Backup Solutions a. Create a policy and add the SnapServer as a client. b. Look at the client list to verify that the SnapServer client is listed. Uninstall the NetBackup v6.5 Client 1. Log in to the client system as the root user.
Page 226 /etc/profile Install the EMC Networker Client 1. Connect to the SnapServer via SSH, and log in as admin, using your admin user password. NOTE: SSH v2 is required. If you fail to connect to the server, ensure that your SSH client is configured to connect via SSH v2.
Page 227 Maintenance > Shutdown/Restart page, and click Restart. 10. Delete the client files you copied to the SnapServer because they are no longer needed. 11. To verify the success of the installation, use your backup management software to configure and run a test backup.
Page 228 EMC Networker Command Reference. 1. Connect to the SnapServer via SSH, and log in using the admin user name and password. NOTE: SSH v2 is required. If you fail to connect to the server, ensure that your SSH client is configured to connect via SSH v2.
Page 229: Iscsi Disk Backups
4. Inside the new key, create three string values: VALUE NAME VALUE DATA {759c7754-6994-46c9-9cf9-c34ac63a0689} Name SnapServer VSS Hardware Provider Version 5. Close regedit The SnapServer VSS Provider should now be available to Backup Exec to use for VSS-based backups. 10400317-003 05/2012  B-14 ©2010-12 Overland Storage, Inc.
Page 230: Appendix C - Security And Access
Appendix C This appendix provides additional information and configuration options about accessing shares and files on the SnapServer. GuardianOS on the SnapServer supports share-level as well as file- and directory-level permissions for all local and Windows domain users and groups (see “Windows ACLs”...
Page 231: Security Model Directories
SnapServer GuardianOS 7.2 Administrator’s Guide Security Model Directories • The security personality of a file or directory can be changed by any user with sufficient rights to change permissions or ownership. If a client of one security personality changes permissions or ownership of a file or directory of a different...
Page 232: Special Share Options
Special Share Options The basic setup and configuration of shares on a SnapServer is handled on the Security > Shares page (see Chapter 7, “Security Options”).
Page 233: File And Share Access
A snapshot share is a read-only copy of a live share that provides users with direct access to versions of their files archived locally on the SnapServer via a snapshot. Users who wish to view or recover an earlier version of a file can retrieve it on demand without administrator intervention.
Page 234: Creating A Snapshot Share
NOTE: The same share folders appear on the Web View page when you connect to the SnapServer using a Web browser. However, the snapshot share folder does not provide access to the snapshot;...
Page 235: Security Personalities And Security Models
NOTE: Group membership of NFS clients is established by configuring the local client’s user account or the NIS domain. Group membership of SnapServer local users or users ID- mapped to domain users is not observed by NFS clients. Therefore, ACL permissions applied to groups may not apply as expected to NFS clients.
Page 236 SnapServer GuardianOS 7.2 Administrator’s Guide File-level Security 1. Using a Windows 2003, XP, Vista, 2008, or 7 client, map a drive to the SnapServer, logging in as a user with change permissions for the target file or directory. 2. Right-click the file or directory, choose Properties, and then select the Security tab.
Page 237: Appendix D - Troubleshooting Snapservers
SnapServer DX1 The SnapServer DX1 has two network LEDs (Ethernet 1, left; Ethernet 2, right) and one status LED. Each drive has two disk LEDs (Drive Activity and Drive Status). There is a Power button and a Reset button, as shown in the following illustration:...
Page 238 Status Ethernet The Power button is an override option only as the SnapServer head unit manages the power to all attached expansion units. To use the Power button to shut down the expansion unit, press and hold it for four seconds.
Page 239: System Reset Options
Power Failure Fan Failure Blinking System Reset Options Often the first thing to try in resolving anomalous behavior on a SnapServer is to reset the server to factory defaults using the Web Management Interface. See “Factory Defaults” on page 9-3.
Page 240: Maintenance Mode
Maintenance Mode On the SnapServer DX1, the Reset button is accessed via a small hole next to the Power button on the front of the server at the top. On the DX2, the hole is located at the bottom of the Power panel on the right flange.
Page 241 You Have No Access to the SnapServer via HTTP When trying to access the SnapServer via HTTP, the Web browser times out. The server can be accessed using the ping command or Windows Explorer. • HTTP and HTTPS are both enabled by default on SnapServers. Try typing HTTPS in the Web address rather than HTTP.
Page 242 Ethernet port. Also, check to see that the Link light on the front of the SnapServer is lit (solid green). If the Link light is off, this is normally caused by a mismatch between the switch/hub and the Ethernet port on the SnapServer. To resolve this problem, verify that all settings (if using multiple Ethernet ports) on the switch/hub match the setting on the server.
Page 243: Miscellaneous Issues
Power to the SnapServer Is Unexpectedly Cut Off Due to a Power Outage Overland Storage recommends that you use an uninterruptible power supply (UPS) with the SnapServer. If you did not have a UPS attached to the server at the time of the power outage, do the following: 1.
Page 244: Phone Home Support
Windows OS, or hold down the shift key while deleting folders or files. Phone Home Support Once your SnapServer has been registered, Phone Home Support becomes available for use. Phone Home Support emails system logs and files that contain information useful for troubleshooting purposes to Overland Storage technical support.
Page 245: Appendix E - Command Line Interface
Appendix E GuardianOS includes a command line interface (SnapCLI) accessible through SSH. Using the CLI, users can access information about most of the SnapServer configuration parameters and perform configuration and maintenance functions without using the GuardianOS Web Management Interface or SSM.
Page 246 SnapServer GuardianOS 7.2 Administrator’s Guide SnapCLI Syntax where is the name of one of the SnapCLI commands, is an action COMMAND ARGUMENT available for that command, and are additional parameters for the command. OPTIONS Once logged into the CLI, there are several ways of displaying information about available parameters.
Page 247: Snapcli Procedures
- non-secure-http=(yes|no) Thus, the following command string: web set require-webview-auth=yes non-secure-http=no sets HTTP/HTTPs properties on the SnapServer to require clients to authenticate in order to access the server and to disable non-secure HTTP access. SnapCLI Procedures Use these procedures to access and exit SnapCLI.
Page 248 List the available timezones (used in conjunction with the date set command) diskunits Get status information of all the disk units on the server domain get Get the domains known to the SnapServer and their properties domain list List the domains known to the SnapServer dri create...
Page 249 With a file name, this command allows the user to view any file on the system. It should only be used for 'text' files. name get Get the name of the SnapServer name set Set the name of the SnapServer...
Page 250 Set volume quota limit & usage for a specific user reboot Reboot the SnapServer securitymodel get Get the security model on a SnapServer Volume securitymodel set Set the security model on a SnapServer Volume share create Create a share...
Page 251 Turning off SSH while running the command line will 'kick' the user off the system and they won't be able to log back into the command line until SSH is re-enabled via the SnapServer Web Management Interface. syslog all Create a tar file of syswrapper and all third-party logs...
Page 252 Number. NOTE: This is the same information displayed in the Web Management Interface “About” box volume list List of the volumes defined on the SnapServer volume get Get a specific volume’s properties volume create Create a new logical volume volume edit...
Page 253: Scripts In Snapcli
SnapServer GuardianOS 7.2 Administrator’s Guide Scripts in SnapCLI The following commands are available only in Traditional RAID: Command Description raid list List available raids raid create Create a raid set raid delete Delete a raid set raid get Get raid set properties...
Page 254: Sample Script
Following is an example script that can be used to create and remove users, groups, and shares: #!/bin/sh ########################################################## # Copyright 2003-2007 Overland Storage, Inc. All rights reserved. # # Permission is granted to use this code provided that it # # retains the above copyright notice. ##########################################################...
Page 255: Create A Group
SnapServer GuardianOS 7.2 Administrator’s Guide Scripts in SnapCLI Create a Group # if the group does not exist then create it if ! $CLI group get group-name="$1" > /dev/null 2>&1; then echo "Creating group '$1' ..." $CLI group create group-name="$1" > /dev/null 2>&1 if [ $? -ne 0 ];...
Page 256 SnapServer GuardianOS 7.2 Administrator’s Guide Scripts in SnapCLI if [ $? -ne 0 ]; then echo "Deletion of user '$1' failed." return 1 else echo "User '$1' does not exist." return 0 # usage: 'rmgroup <group_name>' rmgroup() Delete the Group # if the group exists then delete it if $CLI group get group-name="$1"...
Page 257 SnapServer GuardianOS 7.2 Administrator’s Guide Scripts in SnapCLI 10400317-003 05/2012  E-13 ©2010-12 Overland Storage, Inc.
Page 258: Appendix F - Guardianos Ports
• Networking > NFS sunrpc Remote Procedure Call (RPC) Protocol for remote command • Assist execution, used by Network • SnapServer Manager Filesystem (NFS) and SnapServer Manager TCP & UDP Server > Date/Time > Network Time Protocol (NTP) Advanced TCP & UDP Network >...
Page 259 SnapServer GuardianOS 7.2 Administrator’s Guide Port # Layer GOS Feature Name Comment TCP & UDP Network > SNMP snmptrap Traps for SNMP TCP & UDP Network > Windows/SMB ldap Lightweight Directory Access Protocol (LDAP) TCP & UDP • Web Management...
Page 260 SnapServer GuardianOS 7.2 Administrator’s Guide Port # Layer GOS Feature Name Comment 9050 Sysbroker Sysbroker RPC Port 10001 Snap Extension Snap Shutdown Port Extension 12000 TCP & UDP Network > Apple/AFP afp2overtcp Second NIC 12168 CA Antivirus inoweb Admin Interface...
Page 261: Master Glossary & Acronym List
Master Glossary & Acronym List NOTE: This is a general Overland Storage glossary and acronym list. Not all items may be found in this document or be used by this product. 1000BASE-T 1000BASE-T (also known as IEEE 802.3ab) is a standard for gigabit Ethernet over copper wiring.
Page 262 SnapServer GuardianOS 7.2 Administrator’s Guide AllLocalUsers Group The default group for all local users on SnapServers. Local users are set up by the SnapServer administrator. Network users or Windows domain users are not part of the AllLocalUsers group. AllUsers Group A collection of all users.
Page 263 3-of-9 code (Code 39) where each character is represented by 9 bars, 3 of which are wide. Bonding A technology that treats two ports as a single channel, with the network using one IP address for the server. SnapServer appliances support load balancing and failover bonding modes. Bridging Devices that connect and pass packets between two network segments that use different communications protocol.
Page 264 IP addresses on a computer network. Each system that connects to the Internet/intranet needs a unique IP address. A SnapServer can be configured to perform as a DHCP server and assign IP addresses with a single subnet.
Page 265 Microsoft's MPIO. DynamicRAID™ DynamicRAID is a powerful SnapServer feature that simplifies management of disk additions and replacements in a RAID environment. All RAID and filesystem capacity management is entirely automated. More capacity can be added over time by just inserting or replacing drives.
Page 266 A strategy that enables one Ethernet port to assume the role of another port if the first port fails. If a port fails on a SnapServer, the second port assumes its network identity (if the two Ethernet cards have been configured for failover). When the port comes back online, the original identities are restored.
Page 267 Front-end See Back-end. Short for File Transfer Protocol. A standard Internet protocol that provides a way to exchange files between computers on the Internet. By default, a SnapServer is set up to be an FTP server. Full-duplex A type of transmission that allows communicating systems to both transmit and receive data simultaneously.
Page 268 SnapServer GuardianOS 7.2 Administrator’s Guide Host Bus Adapter Connects a host system (such as a SnapServer) to other network and storage devices. Host Name The unique name by which a computer is known on a network. It is used to identify the computer in electronic information interchange.
Page 269 I/O (Input/Output) The operation of transferring data to or from a device, typically through an interface protocol like CIFS, NFS, or HTTP. The SnapServer presents a filesystem to the user and handles block I/O internally to a RAID array. Short for Internet Protocol. The unique 32-bit value that identifies the location of the server.
Page 270 Local Group/Local User A group/user defined locally on a SnapServer using the Web Management Interface. The local user is defined by the server administrator. Windows domain, ADS, and NIS users are not considered local.
Page 271 Data Link Control layer concerned with sharing the physical connection to the network among several computers. Each Ethernet port has a unique MAC address. SnapServer appliances with dual-Ethernet ports can respond to a request with either port and have two unique MAC addresses.
Page 272 SnapServer GuardianOS 7.2 Administrator’s Guide Multihomed A SnapServer that is connected to two or more networks or has two or more network addresses. N_port A Node port connects via a point-to-point link to either a single N_Port or a single F_Port.
Page 273 SnapServer GuardianOS 7.2 Administrator’s Guide to F_Port to N_Port using a single Fibre Channel fabric switch. In the absence of a fabric switch FL_Port, NL_Ports can communicate with other NL_Ports in virtual point-to-point links through a FC-AL open loop circuit often through FC-AL (Arbitrated Loop) hub or loop switch devices.
Page 274 SnapServer GuardianOS 7.2 Administrator’s Guide Pool A pool is a collection of RAID disks, grouped together by the RAID storage controller. iSCSI volumes are created from these pools. New volumes can be created and existing volumes can be extended, provided there is spare capacity in the pool from which the volume was created.
Page 275 SnapServer GuardianOS 7.2 Administrator’s Guide RAID 0 (Striped) RAID 0 is ideal for environments in which performance (read and write) is more important than fault tolerance, or you need the maximum amount of available drive capacity in one volume. Data is striped across multiple disks so that it can be read and written in parallel. It provides higher performance than a single disk, especially when reading or writing large files, but it is vulnerable to a disk failure.
Page 276 (also known as NULL session connections) to list account names and enumerate share names. The implementation of the restrict anonymous mechanism may prevent the SnapServer from obtaining the list of account names it needs to authenticate Windows domain users.
Page 277 SnapServer GuardianOS 7.2 Administrator’s Guide Rollback A snapshot feature that allows the administrator to restore a volume to a previous state as archived in a snapshot without resorting to tape. Round Robin The Round Robin path selection policy causes all healthy paths to be used for I/O. Paths are used in a round-robin order.
Page 278 Short for Simple Mail Transfer Protocol. A TCP/IP protocol used for sending and receiving email. Snap EDR A SnapExtension that copies the contents of a share from one SnapServer to another share on one or more SnapServers. Snap EDR is designed to work with SnapServers and other SnapServer Storage Solutions.
Page 279 RAID controller firmware and needs no support from any backup utility. SnapDRImage The SnapServer disaster recovery image that saves server-specific settings such as server name, network, RAID, volume and share configuration, local user and group lists, and snapshot schedules.
Page 280 Static IP Address An IP address defined by the system administrator rather than by an automated system, such as DHCP. The SnapServer allows administrators to use DHCP-assigned or statically assigned IP addresses. Storage Area Network See SAN.
Page 281 Internet Protocol (IP). UDP is an alternative to the Transmission Control Protocol but, unlike TCP, does not guarantee reliability or ordering of data packets. Short for User Identification. A unique ID assigned to each user on a SnapServer for security purposes. Unassigned The state of a disk drive that is seated in a bay but has not been incorporated into a RAID.
Page 282 SnapServer GuardianOS 7.2 Administrator’s Guide Unassigned Free Space The controller keeps a map of all the space that is not assigned to any logical drive. This space is available for creation or expansion. Each unassigned region is individually listed. Short for Universal Naming Convention. In a network, a way to identify a shared file in a computer without having to specify (or know) the storage device it is on.
Page 283 A Web-based utility used for configuration and ongoing maintenance, such as monitoring server conditions, configuring email alerts for key events, or for SNMP management. Web View The Web-browser page that opens when users access a SnapServer using their Web browsers, and displays a list of all shares. Windows Domain Authentication Windows-based networks use a domain controller to store user credentials.
Page 284: Index
(Windows) iSCSI Disks 6-17 Active Directory of server and volume settings and name resolution servers off-the-shelf solutions joining AD domain 3-12 backup.acl SnapServer interoperability with 3-10 backup.qta.groups admin password backup.qta.users default resetting forgotten Administration page 10-4 CA Antivirus, see Antivirus...
Page 285 SnapServer 7.2 Administrator’s Guide to SnapServers conventions, typographical PR-iv electrostatic discharge information PR-v customer support PR-iii email notification of server events 9-15 EMC NetWorker installing agent B-10 special backup and restore operations B-12 data import Ethernet, see Gigabit Ethernet data protection tasks...
Page 286 SnapServer 7.2 Administrator’s Guide Host File Editor load balancing, configuring server for hot spares local groups 7-21 hot swap local hot spares and automatic incorporation of disks 5-11 login, to antivirus GUI 11-2 disk drive 6-26 HP Open View 3-25...
Page 287 SnapServer 7.2 Administrator’s Guide orphaned disk drive 6-32 Quotas orphaned disk drives 6-32 backing up configuration OS update 9-13 properties 5-20 Overland technical support PR-iii RAID parity types defined G-17 adding disk drives to upgrade adding disk drives to 5-13...
Page 288 SnapServer 7.2 Administrator’s Guide and volume settings, backing up and incompatible disk drives creating initial name RAID Sets screen changes 2-13 Volumes screen 5-14 discovering options 2-13 storage pools registration, via Web Management Interface 9-14 and expansion units status 2-11...
Page 289 SnapServer 7.2 Administrator’s Guide volumes and DynamicRAID 4-10 and Traditional RAID 5-14 backing up configuration capacity reached alert 9-16 dynamic effect of deleting on antivirus software 11-1 expanding capacity of 5-17 Properties screen 5-17 quotas screen 5-14 size limits Wake-on-LAN Support...

Overland Storage SnapServer Administrator's Manual

Chapter 1 - Overview

Chapter 2 - Server Setup and Options

Chapter 3 - Network Access

Chapter 4 - Dynamicraid Storage

Chapter 5 - Traditional RAID Storage

Chapter 6 - Other Storage Options

Chapter 7 - Security Options

Chapter 8 - System Monitoring

Chapter 9 - Maintenance

Chapter 10 - Misc. Options

Chapter 11 - CA Antivirus Software

Appendix A - Dynamicraid Overview

Appendix B - Backup Solutions

Appendix C - Security and Access

Appendix D - Troubleshooting Snapservers

Appendix E - Command Line Interface

Appendix F - Guardianos Ports

Master Glossary & Acronym List

Index

Quick Links

Need help?

Questions and answers

Related Manuals for Overland Storage SnapServer

Summary of Contents for Overland Storage SnapServer