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Overland Storage SnapSAN S1000 User Manual

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SnapSAN™ S1000
Overland
Storage
January 2013
10400310-003

User Guide

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Summary of Contents for Overland Storage SnapSAN S1000

  • Page 1: User Guide

    SnapSAN™ S1000 Overland Storage User Guide January 2013 10400310-003...
  • 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 Preface This user guide explains how to install, setup, and use your new Overland Storage SnapSAN S1000 server. This guide assumes that you are familiar with computer hardware, data storage, and network administration terminology and tasks. It also assumes you have basic knowledge of...

  • Page 4: Typographical Conventions

    Courier Bold Information contained in this guide has been reviewed for accuracy, but not for product warranty because of the various environments, operating systems, or settings involved. Information and specifications may change without notice. 10400310-003 01/2013  ©2010-13 Overland Storage, Inc.

  • Page 5: Table Of Contents

    Installation Overview ............................2-2 Drive Slot Numbering ............................2-3 Installing the SnapSAN S1000 .........................2-3 Powering ON / OFF ...............................2-4 Power Up the SnapSAN S1000 ........................2-4 Powering Down the SnapSAN S1000 ......................2-4 Chapter 3 - Basic Configuration Management Interfaces .............................3-1 Web Management Interface ........................3-1 Front Panel Display ............................3-3...
  • Page 6 SnapSAN S1000 User Guide Contents Fibre Channel Configuration ..........................4-7 iSCSI Configuration ...............................4-7 Network Setup ..............................4-7 Entity and iSNS Settings ..........................4-10 iSCSI Nodes ..............................4-11 Active Sessions ..............................4-13 CHAP Accounts ............................4-15 Volume Configuration ............................4-17 Physical Disks ..............................4-17 RAID Groups ..............................4-18 Virtual Disks ..............................4-22 Snapshots ...............................4-25...
  • Page 7 System Buzzer ................................6-1 Event Notifications ..............................6-1 Chapter 7 - VSS Installation Theory of Operation .............................7-1 Software Installation .............................7-2 Using SnapSAN S1000 VSS ............................7-3 Creating a Snapshot ............................7-3 Listing Snapshots .............................7-3 Exposing a Snapshot ............................7-3 Chapter 8 - Replication Introduction ................................8-1 Network configuration ............................8-1...

  • Page 8: Chapter 1 - Overview

    Chapter 1 SnapSAN S1000 Overview This user guide describes how to set up and use the Overland Storage SnapSAN S1000. The storage array, available in different configurations of iSCSI, Fibre Channel, and SAS interfaces, together with the SnapSAN S1000 installed software, provides a flexible, intelligent, storage area network (SAN) solution for virtualized server environments and the growing demand for data storage.

  • Page 9: Disk Drive Assemblies

    SnapSAN S1000 User Guide Hardware NOTE: The buttons are covered when the bezel is installed. However, the Front Panel Display and three LEDs are still visible with the bezel attached. This table shows the items located on the Front Panel Display:...

  • Page 10: Rear Panel

    SnapSAN S1000 User Guide Hardware Disk drive assemblies consist of a SnapSAN S1000 disk tray with either SAS, SATA II, or Green SATA II disk drive preinstalled in it. A blank assembly consists of a special empty tray used to ensure proper airflow within the enclosure. Eight blank assemblies are included with the server.
  • Page 11 All controllers and batteries must be registered with the SnapSAN S1000 in which they are installed. By default, the SnapSAN S1000 is configured as a single controller system. To change it to a dual controller system with Master and Secondary controllers: 1.
  • Page 12 SnapSAN S1000 User Guide Hardware There are four different controllers available for the SnapSAN S1000. With the exception of the host SAN ports, the connections are the same on all four modules: Dual-PORT 4Gb Fibre Channel controller: This table details the items called out in the controller components photos:...

  • Page 13: Raid Concepts

    SnapSAN S1000 User Guide RAID Concepts Four-Port Gigabit (Gb) iSCSI controller: Dual-Port 10Gb iSCSI controller: Dual-Port 6Gb SAS controller: RAID Concepts RAID is the abbreviation of Redundant Array of Independent Disks. The basic idea of RAID is to combine multiple individual drives together to form one large logical drive or volume.

  • Page 14: Volume Relationships

    SCSI disk storage, providing higher speeds and far greater numbers of connected devices. The SnapSAN S1000 Fibre Channel controller only supports loop networks. It does not work with Fabric networks.

  • Page 15: Iscsi Concepts

    It performs SCSI commands sent by the initiator or is a bridge to an attached storage device. The initiator can be either software or hardware (HBA). Refer to the SnapSAN S1000 Compatibility Guide on the Overland Storage web site for the latest certification list. OS native initiators or other software initiators use standard TCP/IP stack and Ethernet hardware, while iSCSI HBAs use their own iSCSI and TCP/IP stacks on board.
  • Page 16 • A single SAS controller system supports two (2) direct host connections. • A dual SAS controller system supports four (4) direct host connections. • With a switch placed between the SnapSAN S1000 and the host computers, either SAS controller system can support up to 32 host connections.

  • Page 17: Chapter 2 - Installation

    Installation Chapter 2 This chapter explains how to install your SnapSAN S1000. Sections in this chapter include: • First Things First—Activate Your Warranty! • Connection Planning • Installation Overview • Powering ON / OFF First Things First—Activate Your Warranty! Before installing your new SnapSAN S1000, drives, and controllers, it is essential that you activate your Overland warranty.

  • Page 18: Connection Planning

    SnapSAN S1000 User Guide Connection Planning Connection Planning Use this checklist to help you plan the incorporation of your single controller SnapSAN S1000 into your SAN network. For a dual-controller system (shown in square brackets), double the number of connections:...

  • Page 19: Drive Slot Numbering

    Otherwise, event logs no longer exist after a reboot. Installing the SnapSAN S1000 Using detailed instructions from the SnapSAN S1000 Quick Start Guide that came in the Accessory Kit, install the unit in the rack as follows: 1.

  • Page 20: Powering On / Off

    8. Confirm or set the IP address and start the configuration for your needs. Powering ON / OFF Power Up the SnapSAN S1000 The power switch is located in the center of the rear panel’s lower section. To turn the storage array ON, press “|”...
  • Page 21 SnapSAN S1000 User Guide Powering ON / OFF 2. When the “System Shutdown” message is shown, move the main power switch to OFF (O). 10400310-003 01/2013  ©2010-13 Overland Storage, Inc.

  • Page 22: Chapter 3 - Basic Configuration

    The default IP setting is DHCP. Check the Front Panel Display to find the DHCP address displayed there. If your network doesn’t have a DHCP server, you will need to configure a static IP address using the Front Panel Display (as detailed in the SnapSAN S1000 Quick Start Guide).
  • Page 23 SnapSAN S1000 User Guide Management Interfaces When the password has been verified, the Home Page is displayed. Indicators and Icons (Content Page) Menu Bar Options Choose the functions from the Menu Bar on the left side of the window to make any configuration changes.

  • Page 24: Front Panel Display

    SnapSAN S1000 User Guide Management Interfaces Icon Description Temperature light: Green = Temperature is normal. Red = Temperature is high. Voltage light: Green = Internal power levels are normal. Red = Internal power levels are abnormal. UPS light: Green = UPS functioning or no UPS connected.
  • Page 25 • Enclosure Mgmt – Shows the enclosure data for disk drive temperatures, fan status, and the power supply status. • Reset to Default – Resets the SnapSAN S1000 to default settings. The default resets include Administration password set to “admin,” IP address type set to “DHCP,”...
  • Page 26 SnapSAN S1000 User Guide Management Interfaces Front Panel Display Menu Hierarchy Main Level 1 Level 2 Level 3 Level 4 Level 5 [Firmware Version 2.0.2] [System Info] [RAM Size nnnn ▲ ▼ [Alarm Mute] ▲ ▼ [Reboot] [Reboot/Shutdown] ▲ ▼...

  • Page 27: Front Panel Display Usage

    Serial Console Should the need arise, use the provided console cable (NULL modem cable) to connect from console port of the SnapSAN S1000 to the RS-232 port of management computer. The console settings are: Baud rate: 115200, 8 data bit, no parity, 1 stop bit, and no flow control.

  • Page 28: Chapter 4 - Web Management Interface

    Menu options: Authentication Method / Change Portal / Rename Alias/ Users Active Sessions Menu options: List Connections / Delete CHAP Accounts Menu options: Modify User Information / Delete Create button: User Name / Secret / Re-type Secret / Nodes 10400310-003 01/2013  ©2010-13 Overland Storage, Inc.
  • Page 29 SnapSAN S1000 User Guide Interface Hierarchy Menu Bar Item Level 1 Level 2, Button, or Menu (▼) Volume Configuration Physical Disks Menu options: Set Free Disk / Set Global Spare / Set Dedicated Spare / Upgrade / Disk Scrub / Turn On (Off) the...

  • Page 30: System Configuration

    SnapSAN S1000 User Guide System Configuration Menu Bar Item Level 1 Level 2, Button, or Menu (▼) Volume Creation (Three step wizard. See “Volume Creation Wizard” on page 4-42 for details.) Wizard System Configuration The System Configuration menu option is for accessing the System Settings, Network Settings, Login Settings, Email Notification Settings, and Log and Alert Settings option tabs.

  • Page 31: Network Settings

    The Login Setting tab on the System Configuration screen is used to control access to the SnapSAN S1000. Use it to set an auto logout time, to limit access to just one administrator at a time, and to change the Admin and User passwords.

  • Page 32: Email Notification Settings

    SnapSAN S1000 User Guide System Configuration The specific options available are: • Login Options: • Auto Logout – Choose from Disabled, 5 minutes, 30 minutes, or 1 hour. The system automatically logs the user out of the Web Management Interface when they are inactive for the stated period of time.
  • Page 33 SnapSAN S1000 User Guide System Configuration • SNMP Trap Settings – The SnapSAN S1000 allows up to three SNMP trap addresses. The default community setting is public. You can choose the SNMP alert levels you want to receive. The default setting is for only Warning and Error alerts.

  • Page 34: Fibre Channel Configuration

    The Network Setup tab on the iSCSI Configuration screen is used to change IP addresses of iSCSI data ports. A SnapSAN S1000 with iSCSI gigabit controllers has four ports on each controller to transmit data. Each port must be assigned its own IP address. They need to be configured in multi-homed mode or a preset link aggregation / trunking mode.
  • Page 35 SnapSAN S1000 User Guide iSCSI Configuration Clicking the menu button (▼) displays the options for each LAN: iSCSI Bonding Settings The default mode of each iSCSI data port is that it is individually connected (multi-homed) without any link aggregation and trunking. This function is also for Multipath functions.
  • Page 36 SnapSAN S1000 User Guide iSCSI Configuration iSCSI IP Address Settings To change an iSCSI IP address, click the menu button (▼) for the LAN port and select iSCSI IP Address Settings. There are two options: DHCP or Static. You can select DHCP to acquire...

  • Page 37: Entity And Isns Settings

    TCP/IP network. To use iSNS, an iSNS server needs to be added to the SAN. Once this is done, the iSNS server IP address must be added to the SnapSAN S1000 for the iSCSI initiator service to send queries to it.

  • Page 38: Iscsi Nodes

    The iSCSI Node tab on the iSCSI Configuration screen is used to view the target name for iSCSI initiators. SnapSAN S1000 supports up to 32 nodes on each controller. Clicking the menu button (▼) displays the options for each initiator.
  • Page 39 SnapSAN S1000 User Guide iSCSI Configuration 3. Select CHAP from the drop-down list: 4. Click OK to change the Authentication Method (Auth) to CHAP: 5. Click the menu button (▼) again and select Users. 6. Select all the CHAP users which will be used.

  • Page 40: Active Sessions

    SnapSAN S1000 User Guide iSCSI Configuration 2. Check the portals you want for the controller: 3. Click OK. Rename Alias This option is used to create an alias to one device node. To add or change an alias name, enter the name and click OK. To delete the alias, clear the current name and click OK.
  • Page 41 SnapSAN S1000 User Guide iSCSI Configuration Clicking the menu button (▼) displays the options for each session. This table shows the column descriptions for this tab. Most of the options are standard parameters used in the negotiation between the initiator and target when a iSCSI...

  • Page 42: Chap Accounts

    SnapSAN S1000 User Guide iSCSI Configuration Click the menu button (▼) of session number and select Connection Details. It lists all connections of that session. To terminate a session, click the menu button (▼) and select Disconnect. Click OK to confirm.
  • Page 43 SnapSAN S1000 User Guide iSCSI Configuration 3. If desired, select one or more nodes. If selecting none, they can be added later by going to iSCSI configuration > Node > User. 4. Click OK. To modify a CHAP account, click the menu button (▼) of the account and select Modify User Information.

  • Page 44: Volume Configuration

    SnapSAN S1000 User Guide Volume Configuration Volume Configuration The Volume Configuration menu option is for accessing the Physical Disks, RAID Groups, Virtual Disks, Snapshots, and Logical Units option tabs. Physical Disks The Physical Disks tab on the Volume Configuration screen provides the status of the disk drives in the system.

  • Page 45: Raid Groups

    SnapSAN S1000 User Guide Volume Configuration Column Name Description Interface The disk drive type: • SATA2 – It is a SATA II disk. • SAS – It is a SAS disk. Menu options for the Physical Disks tab are accessed by clicking the menu button (▼). Active functions can be selected while inactive functions appear grayed out and cannot be selected.
  • Page 46 SnapSAN S1000 User Guide Volume Configuration Column Name Description Total (GB) [or (MB)] The total capacity of this RAID Group. The number can be displayed in GB or MB (depends on the size setting). Free (GB) [or (MB)] The free capacity of this RAID Group. The number can be displayed in GB or MB (depends on the size setting).
  • Page 47 SnapSAN S1000 User Guide Volume Configuration Menu Item Description Move RAID Level Use this option to move the RAID from one set of disk drives to another. Activate Activate the RAID Group after disk roaming. It can be executed when the RAID Group status is offline.
  • Page 48 SnapSAN S1000 User Guide Volume Configuration • Optionally, configure the following: • Write Cache usage. • Standby option. • Read-Ahead option. • Command Queuing option. 3. Click OK to create the RAID Group. 4. At the confirmation message, click OK.

  • Page 49: Virtual Disks

    SnapSAN S1000 User Guide Volume Configuration • Click the Select Disks button, select disks from either the Head Unit or Expansion units for use, and click OK to complete the selection. The selected disks are shown under Disks Used. 3. Click OK to complete the RAID move.
  • Page 50 SnapSAN S1000 User Guide Volume Configuration Column Name Description Snapshot Space (GB) The RAID Group space that is used for Snapshots. The number [or (MB)] means used or total Snapshot space. The number can be displayed in GB or MB (depending on the size setting).
  • Page 51 SnapSAN S1000 User Guide Volume Configuration Menu Item Description Set Properties Change the properties of a virtual disk: • Virtual Disk Name • Cache Mode • Priority • Bg Rate (Background Rate) • Read-Ahead Attach LUN Attach a LUN to a virtual disk.

  • Page 52: Snapshots

    SnapSAN S1000 User Guide Volume Configuration 2. Use the Create a Virtual Disk dialog to configure the disk: • Enter a Volume Name for the virtual disk. • Use the drop-down list to select a RAID to use. • Enter the Size and select the size units.
  • Page 53 Schedule times for automatic snapshots. Take a Snapshot Manually create a snapshot. Cleanup Snapshots Remove/delete all existing snapshot IMPORTANT: For complete details and procedures used with SnapShots on a SnapSAN S1000 including automatically scheduled snapshots, refer to “Snapshots” on page 5-4. Take a Snapshot 1.

  • Page 54: Logical Units

    SnapSAN S1000 User Guide Volume Configuration 4. Enter the snapshot Size, and click OK. The size must not exceed the available space. If size is zero, the exposed snapshot will be read-only. Otherwise, the exposed snapshot can be read or written to and the size will be the maximum capacity for those rights.

  • Page 55: Volume Creation Example

    SnapSAN S1000 User Guide Volume Configuration 2. At the dialog box, enter or select the options: a. Select the Virtual Disk from the drop-down list. b. Enter the Host name. Each Host must have either an iSCSI node name for access control or a wildcard ( to allow access by every host.
  • Page 56 SnapSAN S1000 User Guide Volume Configuration c. At the Create RAID Group dialog, enter or select the options, using the data in this graphic. For Select Disks, choose disks from either the Head Unit or Expansion units for use, and click OK to complete the disk selection.
  • Page 57 SnapSAN S1000 User Guide Volume Configuration c. At the Create a Virtual Disk dialog, enter or select the options. 3. Repeat Step 2 to create another virtual disk named “VD-R5-2” using about 40% of the RAID Group. You now have virtual disks named VD-R5-1 and VD-R5-2. There are no LUNs attached.
  • Page 58 SnapSAN S1000 User Guide Volume Configuration f. Select the second virtual disk. g. Click Attach LUN. h. Enter or select the following options: • Host name of Target 1. • Target number 1. • LUN number LUN 1. • Read-write permissions.

  • Page 59: Enclosure Management

    SnapSAN S1000 User Guide Enclosure Management d. At the confirmation message, click OK. 4. Release the Global Spare Disk: a. Select the Physical Disk tab. b. Click the menu button (▼) next to the Physical Disks used as the spare and select Set Free Disk.

  • Page 60: Hardware Monitor

    SnapSAN S1000 User Guide Enclosure Management Hardware Monitor The Hardware Monitor tab on the Enclosure Management screen shows the information of current voltages and temperatures, and provides an Auto Shutdown option. If Auto Shutdown is enabled, the system will shutdown automatically when the internal power levels or temperature are not with normal levels.

  • Page 61: Ups

    First, connect the system and APC UPS via the included cable for communication. (The SnapSAN S1000 cable plugs into the APC serial cable that comes with the UPS.) Then set up the shutdown values (shutdown battery level %) for when the power goes out.

  • Page 62: Ses

    SnapSAN S1000 User Guide Enclosure Management Options Description UPS Battery Level Current power percentage of battery level. The SES tab on the Enclosure Management screen addresses the SCSI Enclosure Services, one of the enclosure management standards. This tab can be used to enable or disable the management of SES.

  • Page 63: System Maintenance

    SnapSAN S1000 User Guide System Maintenance S.M.A.R.T. measures many attributes of the disk drive all the time and inspects the properties of disk drives which may be close to being out of tolerance. The advanced notice provided by S.M.A.R.T. can allow users to back up or replace the disk drive in question. This is better than a disk drive crash while it is writing data or rebuilding another failed disk drive which would result in data loss.

  • Page 64: System Information

    SnapSAN S1000 User Guide System Maintenance System Information The System Information tab on the System Maintenance screen is used to display system information (including CPU type), installed system memory, firmware version, serial numbers of the controllers, backplane ID, and system status.

  • Page 65: Upgrade

    4-39). The Upgrade tab on the System Maintenance screen is used to upgrade the SnapSAN S1000 or SnapDisk E1000 firmware. Save a new firmware file named “xxxx.bin” in local disk drive, click Browse to select the file, click Apply to begin, and click OK at the confirmation message to start to upgrade firmware.

  • Page 66: Reset To Factory Defaults

    SnapSAN S1000 User Guide System Maintenance Normally, the firmware versions in both controllers are the same. Reset to Factory Defaults The Reset to Factory Defaults tab on the System Maintenance screen allows users to reset the controller values back to the factory default settings.

  • Page 67: Reboot And Shutdown

    How To Use the Guided Configurations To help get the SnapSAN S1000 up and running quickly, two different guided configuration tools are available in the Web Management Interface: Quick Installation and Volume Creation Wizard.
  • Page 68 SnapSAN S1000 User Guide How To Use the Guided Configurations 3. At the next screen, confirm or change the Management port information: If you don’t want to use the default DHCP setting, choose either BOOTP, or Specify a Static IP Address. If needed, the IP address of the DNS server can be entered here. If the default HTTP, HTTPS, and SSH port numbers are not allowed on your network, they can be changed here as well.

  • Page 69: Volume Creation Wizard

    SnapSAN S1000 User Guide How To Use the Guided Configurations 5. At this screen, choose a RAID level and volume size and click Next. This step utilizes all drives in the S1000 array as well as any E1000 expansion arrays present.
  • Page 70 SnapSAN S1000 User Guide How To Use the Guided Configurations 1. Select Volume Creation Wizard in the Menu Bar. 2. For Step 1, choose the RAID level desired, then click Next. 3. For Step 2, from the drop-down list, select either the RAID Group capacity combination desired or the Use default algorithm for maximum RAID Group capacity.

  • Page 71: Home/Logout/Mute Icons

    SnapSAN S1000 User Guide Home/Logout/Mute Icons 4. For Step 3, enter the virtual disk size desired that is less than or equal to the default available size shown. Then click Next. 5. Finally, at Step 4, verify your selections and click Finish if they are correct.

  • Page 72: Chapter 5 - Advanced Operations

    Chapter 5 Volume Auto-Rebuild SnapSAN S1000 supports the Auto-Rebuild feature. If one disk drive of a protected RAID Group (for example, RAID 3, RAID 5, or RAID 6) either fails, is unplugged, or is removed, then the status of RAID Group is automatically changed to degraded mode. The system then searches for a spare disk to rebuild the group.

  • Page 73: Raid Group Migration

    SnapSAN S1000 User Guide RAID Group Migration Type Description Min. No. of Drives RAID 0 Disk striping. No protection for data. RAID Group fails if any At least one disk drive fails or unplugs. RAID 1 Disk mirroring over 2 disks. RAID 1 allows one disk drive fails At least two or unplugging.
  • Page 74 SnapSAN S1000 User Guide RAID Group Migration 3. Select your options: a. If desired, change the default RAID Name. b. Use the drop-down list to select the RAID Level. c. Click the Select Disks button to change the disks used with this RAID.

  • Page 75: Virtual Disk Extension

    SnapSAN S1000 User Guide Virtual Disk Extension • Scrub an entire RAID Group. • Take a snapshot. • Delete a snapshot. • Expose a snapshot. • Rollback to a snapshot. Virtual Disk Extension CAUTION: A virtual disk extension cannot be executed during the rebuilding or migration of a virtual disk.

  • Page 76: Create The Snapshot Space

    SnapSAN S1000 User Guide Snapshots The Rollback option restores the data back to the state at the time when it was captured if it should become damaged (for example, a virus attack, data corruption, or human error). Create the 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 Pool to store the data.

  • Page 77: Clean (Delete) Snapshots

    SnapSAN S1000 User Guide Snapshots 3. Select the Snapshots tab to display all snapshots taken from the virtual disk. 4. Click to the menu button (▼) next to the snapshot number and select Set Quota. 5. Enter the snapshot Size.

  • Page 78: Rollback

    Before executing rollback, it is better to dismount the file system to flush the data CAUTION: from cache to the disk drives first. The SnapSAN S1000 displays a message to remind the user when they execute the rollback function. The data in a snapshot can be used to roll back the existing information to the original virtual disk data: 1.
  • Page 79 It is a coordinator between backup software, applications (SQL or Exchange), and storage devices to make sure the snapshot doesn’t have a problem of inconsistent data. The SnapSAN S1000 supports VSS (See Appendix 7, “VSS Installation.”). For more details about the VSS, please refer to: http://technet.microsoft.com/en-us/library/cc785914.aspx...

  • Page 80: Vss Software

    Before creating a snapshot, space for the snapshot is needed in the RAID Group. After a period of creating snapshots, the snapshot space might be less than what is needed for the current snapshot. This is handled automatically by the SnapSAN S1000 depending on the situation: •...

  • Page 81: Expansion Arrays

    LUN configuration is cleared to avoid conflict with the second system's original setting. Expansion Arrays The SnapSAN S1000 storage space can be expanded by adding up to four SnapDisk E1000 expansion arrays. Connecting Expansion Arrays The SnapSAN S1000 controllers support SnapDisk E1000 expansion arrays with SAS connections.
  • Page 82 SnapSAN S1000 User Guide Expansion Arrays Enclosure Management > Hardware Monitor can display the hardware status of the expansion arrays: 10400310-003 01/2013 5-11  ©2010-13 Overland Storage, Inc.

  • Page 83: Upgrade Firmware Of Snapdisk E1000

    A Microsoft iSCSI initiator supports multi-path. Please follow this procedure to use MPIO feature with the initiator: 1. A host with two or more LAN ports is connected to the SnapSAN S1000. 2. Create a RAID Group / virtual disk and attach this virtual disk to the host.
  • Page 84 6. Rescan the disk. There will be one disk running MPIO. Here is the instructions to setup MPIO or MC/S on the SnapSAN S1000. The following network diagrams are the examples to follow to setup the environment. Remember that the host must have multiple NICs which are set up as different IP addresses.

  • Page 85: Trunking And Lacp

    9. Select the second Source IP and Target Portal to iSCSI data port 2. Then select OK. Trunking and LACP Use the following instructions to setup Trunking and LACP on the SnapSAN S1000. The network diagrams can be used as examples to follow to setup the environment.

  • Page 86: Dual Controllers

    6. Attach a LUN to the virtual disk. 7. Logon by Microsoft iSCSI initiator. Dual Controllers The SnapSAN S1000 supports dual controllers of the same type for redundancy. Controller 1 (CTR1) is the Master controller and Controller 2 (CTR2) is the Secondary controller. 10400310-003 01/2013 5-15 ...

  • Page 87: Perform I/O

    SnapSAN S1000 User Guide Dual Controllers Perform I/O To perform I/O using dual controllers, the host should setup an MPIO policy. An MPIO policy will keep I/O running and prevent connection failures that might happen when a single controller fails. Please refer to the following topology and have all the connections ready when configuring the system.

  • Page 88: Controller Status

    SnapSAN S1000 User Guide Dual Controllers 3. Verify the transfer. Controller Status There are four statuses found under System Maintenance > System Information: • Normal – Dual controller mode. Both of controllers are functional. • Degraded – Dual controller mode. When one controller fails or has been unplugged, the system will become degraded.

  • Page 89: Redundancy

    SnapSAN S1000 User Guide Dual Controllers Redundancy For better data service availability, all the connections among host servers, GbE switches, and the dual controllers are recommended as redundant as below. 10400310-003 01/2013 5-18  ©2010-13 Overland Storage, Inc.

  • Page 90: Chapter 6 - Troubleshooting

    Multi-bit memory error is detected at <address>. Info ECC info Error-Correcting Code (ECC) memory is installed. Info ECC info Non-ECC memory is installed. Info SCSI info Received SCSI Bus Reset event at the SCSI Bus <number>. 10400310-003 01/2013  ©2010-13 Overland Storage, Inc.
  • Page 91 SnapSAN S1000 User Guide Event Notifications Table 6-1: EMS Events Level Type Description Info Power supply present Power <item> is installed. Error Power supply not present Power <item> is absent. Info Power supply restored Power <item> function is restored. Error Power supply warning Power <item>...
  • Page 92 SnapSAN S1000 User Guide Event Notifications Table 6-3: LVM3 Events Level Type Description Info RAID Group created RAID Group <name> has been created. Info RAID Group creation failed Failed to create RAID Group <name>. Info RAID Group deleted RAID Group <name> has been deleted.
  • Page 93 SnapSAN S1000 User Guide Event Notifications Table 6-3: LVM3 Events (Continued) Level Type Description Info Virtual Disk rewrite finished Rewrite at LBA <address> of virtual disk completes. Warning Virtual Disk rewrite failed Rewrite at LBA <address> of virtual disk failed.
  • Page 94 SnapSAN S1000 User Guide Event Notifications Table 6-3: LVM3 Events (Continued) Level Type Description Info RAID Group owner changed The preferred owner of RAID Group <name> has been changed to controller <number>. Info Controller failover Controller <number> forced to adopt write-through mode on failover.
  • Page 95 SnapSAN S1000 User Guide Event Notifications Table 6-5: iSCSI Events (Continued) Level Type Description Info iSCSI login rejected iSCSI login from <IP> was rejected, reason [<string>] Info iSCSI logout iSCSI logout from <IP> was received, reason [<string>]. Table 6-6: Battery Backup Events...
  • Page 96 SnapSAN S1000 User Guide Event Notifications Table 6-7: Expansion Array Events (Continued) Level Type Description Info Global spare configured JBOD <number> Physical Disks <slot> has been configured as a global spare disk. Warning Physical Disks read error occurred Read error occurred at LBA <address>- <address>...
  • Page 97 SnapSAN S1000 User Guide Event Notifications Table 6-8: System Maintenance Events Level Type Description Info System shutdown System shutdown. Info System reboot System reboot. Info Firmware upgrade start Firmware upgrade start. Info Firmware upgrade success Firmware upgrade success. Warning Firmware upgrade failure Firmware upgrade failure.

  • Page 98: Chapter 7 - Vss Installation

    Snapshot data is the data copied from the user volume at a specific point in the past. When enabling the Snapshot feature on your SnapSAN S1000 logical drive holding the users data, you must choose the area of the second array. The second array holds the snapshot data and will be made into an internally available logical drive.

  • Page 99: Software Installation

    SnapSAN S1000 User Guide Software Installation Software Installation NOTE: The software has 2 versions: One for a 32-bits OS (x86) and the other for a 64-bit OS (x64). It can only be installed on Microsoft Windows Servers 2003, 2003 R2, 2008, and 2008 R2.

  • Page 100: Using Snapsan S1000 Vss

    SnapSAN S1000 User Guide Using SnapSAN S1000 VSS 4. At the MPIO security alert, click Yes. 5. When the installation finishes, click Finish to dismiss the installation window. 6. At the restart reminder screen, click Yes to reboot the server.
  • Page 101 SnapSAN S1000 User Guide Using SnapSAN S1000 VSS <Drive Letter> – The Windows label for accessing the snapshot data. The data is only available to read; data cannot be written to this drive. For example, to expose the snapshot with ID {6a1c4c9d-3fd7-48dc-adfa-a35d1064f9f9} as drive letter G: Vshadow –el={6a1c4c9d-3fd7-48dc-adfa-a35d1064f9f9},G:...

  • Page 102: Introduction

    Chapter 8 Introduction Replication is a new function on the SnapSAN S1000 redundant RAID subsystem. It helps users to replicate data easily through LAN or WAN from one S1000 to another. Users can learn from this document about how to configure Replication on the S1000 storage array, and how redundancy works on Replication when a controller fails on a source or target RAID subsystem.

  • Page 103: Network Diagram

    A unique license key must be installed onto each S1000 to activate the Replication function. The following steps show how to activate the license key: IMPORTANT: The SnapSAN S1000 must be running firmware version 2.1.1 or higher to install the license to enable replication.

  • Page 104: Set Up The Replication Port On The Source

    SnapSAN S1000 User Guide Configure Replication 3. At the System Maintenance > Upgrade tab, locate the Replication License area. 4. Click the Browse button, navigate to where you downloaded the license, a select it. 5. Click Apply. After the license key is activated, a message is displayed requesting a reboot of the S1000 to have the license take effect.

  • Page 105: Create A Backup Virtual Disk On The Target

    SnapSAN S1000 User Guide Configure Replication 2. Click the menu button (▼) next to the Port 4 name, and select Enable Replication. NOTE: The Port 4 on Controller 2 will also be set as the Replication port automatically at the same time as Controller 1.

  • Page 106: Create Replication Job On The Source

    SnapSAN S1000 User Guide Configure Replication 2. Enter the Virtual Disk Name, select the appropriate settings, and use the Disk Type drop-down menu to choose Backup Target. Click OK. 3. Click the menu button (▼) next to the virtual disk name, and select Attach LUN.
  • Page 107 SnapSAN S1000 User Guide Configure Replication 2. Select the source virtual disk which will be replicated to the Target subsystem, and click Next. NOTE: If a message appears saying that there is not enough space to create a replication job, refer “Configure Snapshot Space”...

  • Page 108: Working With Replication Jobs

    SnapSAN S1000 User Guide Working with Replication Jobs a. If authentication is desired, select the CHAP option and enter the required information. b. Use the options above the Node table to show different Target node lists and then select a node from the list.

  • Page 109: Create A Replication Job Multi-Path Setting

    SnapSAN S1000 User Guide Working with Replication Jobs 3. At the Replication job confirmation message, click Yes. The replication job can be monitored in the Status information column on the Replications tab. The progress is expressed by percentage in the Status column to the right.

  • Page 110: Schedule A Replication Job

    SnapSAN S1000 User Guide Working with Replication Jobs 3. Select the iSCSI node used to log on, and click Next. 4. Choose the same Target virtual disk LUN and click Next. 5. A new target is added to this replication job as a redundancy path.

  • Page 111: Configure Snapshot Space

    SnapSAN S1000 User Guide Configure Snapshot Space 1. At the Replications tab on the Source array, click the menu button (▼) and choose Schedule. 2. Select the specific time settings and click OK. Configure Snapshot Space The Replication uses snapshots to replicate the data without stopping the access of the Source virtual disk.

  • Page 112: How Replication Redundancy Works

    SnapSAN S1000 User Guide How Replication Redundancy Works To configure the snapshot space settings of Replication, click Configuration. There are three settings in the Replication configuration menu: • Snapshot space – specifies the ratio of snapshot space allocated to the Source virtual disk automatically when the snapshot space is not configured in advance.

  • Page 113: Controller 1 Fails On Source

    SnapSAN S1000 User Guide Create Multiple Replication Jobs Controller 1 Fails on Source The network path will be failed over to the second path from the Controller 2 of Source subsystem to the Controller 1 of Target subsystem. Controller 1 Fails on Target The network path will be failed over to the second path from the Controller 1 of Source subsystem to the Controller 2 of Target subsystem.

  • Page 114: First Time Best Practices

    When executing a full copy replication job for the first time over a LAN or WAN, it may take days or weeks to replicate all the data from the Source to the Target subsystem due to the limited network bandwidth. The SnapSAN S1000 provides two features to help the user shorten the execution time of a full copy.
  • Page 115 SnapSAN S1000 User Guide First Time Best Practices 3. After the data is synchronized, change the cloning job to a replication job by selecting Change to Replication from the drop-down menu of Source virtual disk. The values at the Clone column changes from the target virtual disk name to Rep.

  • Page 116: Overland Glossary & Acronym List

    Overland Glossary & Acronym List NOTE: This is a general Overland Storage glossary and acronym list for all products. 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 117 SnapSAN S1000 User Guide Glossary back-end application may interact directly with the front-end or, perhaps more typically, is a program called from an intermediate program that mediates front-end and back-end activities. Back-off Percent In order to allow drives from a different family or manufacturer to be used as a replacement for a drive in an array, it is recommended that a small percentage of the drive’s capacity be...
  • Page 118 SnapSAN S1000 User Guide Glossary CHAP Short for Challenge Handshake Authentication Protocol. A scheme used to verify the identity of remote clients in a network. If there are security concerns, it is possible to set up authentication of targets and initiators, using the CHAP authentication protocol.
  • Page 119 SnapSAN S1000 User Guide Glossary Failback Failback occurs when a path with a higher priority than the currently active path is restored. In this case, I/O will “fail back” to the higher priority path once it is available again. Failover The ability to automatically substitute a working system or path for one which has failed.
  • Page 120 SnapSAN S1000 User Guide Glossary Hot Spare Used as a failover mechanism to provide reliability in system configurations. A hot spare is active and connected as part of a working system. When a key disk fails, the hot spare disk is switched into operation taking its place.
  • Page 121 SnapSAN S1000 User Guide Glossary Initiators and targets have IP addresses, just like any other network entity. They are also identified using an iSCSI name, called the iSCSI Qualified Name (IQN). The IQN should be unique world-wide. It is made up of a number of components, specifying the date, identifying the vendor in reverse format, and then uniquely identifying the initiator or target.
  • Page 122 SnapSAN S1000 User Guide Glossary MAC Address Short for Media Access Control address, a hardware address that uniquely identifies each node of a network. Mapped LUN Number Each logical drive is presented to the host system with a unique LUN. In certain cases (such as after deleting another logical drive) it may be desirable to change the number that a logical drive is presented as.
  • Page 123 SnapSAN S1000 User Guide Glossary NL_port A Node Loop port is capable of arbitrated loop functions and protocols. An NL_Port connects via an arbitrated loop to other NL_Port and at most a single FL_Port. NL_Ports handle creation, detection, and flow of message units to and from the connected systems. NL_Ports are end ports in virtual point-to-point links through a fabric, for example NL_Port to F_Port to F_Port to N_Port using a single Fibre Channel fabric switch.
  • Page 124 SnapSAN S1000 User Guide Glossary Preferred Path The preferred path is the default path. When the path selection policy is set to Failover/Failback, the preferred path is always used if it is available. If the preferred path fails, I/O switches to another path. If it is later restored, I/O switches back to the preferred path.
  • Page 125 SnapSAN S1000 User Guide Glossary • RAID 5 - highly available storage RAID 5 is similar to RAID 0 in that data is striped across multiple disks. However, one disks worth of space is reserved to store parity data, which can be used to reconstruct the pool in the event of one of its disks failing.
  • Page 126 SnapSAN S1000 User Guide Glossary RETMA Short for Radio-Electronics-Television Manufacturers' Association. It is the common name given for a 19-inch distribution frame rack for mounting components. 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 127 SnapSAN S1000 User Guide Glossary SCSI port A SCSI port is an opening at the back of a router that provides connection between the SCSI adapter and SCSI bus. Session When an initiator wants to establish a connection with a target, it establishes what is known as an iSCSI session.
  • Page 128 SnapSAN S1000 User Guide Glossary Stripe Size This is the number of data drives multiplied by the chunk size. Sub-array In RAID 50 applications, this is the name given to the individual RAID 5 arrays that are striped together. Each sub-array has one parity drive.
  • Page 129 SnapSAN S1000 User Guide Glossary Short for User Datagram Protocol. A communications protocol for sending messages between computers in a network that uses the Internet Protocol (IP). UDP is an alternative to the Transmission Control Protocol but, unlike TCP, does not guarantee reliability or ordering of data packets.
  • Page 130 SnapSAN S1000 User Guide Glossary Write-Back Cache A caching method in which modifications to data in the cache aren't copied to the cache source until absolutely necessary. Write-back caching yields somewhat better performance than write-through caching because it reduces the number of write operations to main memory.
  • Page 131 4-38 Front Panel Display controller nodes ............4-11 buttons and LEDs..........1-1 controller types............1-5 hierarchy..............3-5 conventions, typographical ........PR-iv overview ..............3-3 Copy-on-Write.............. 5-4 reboot or shutdown..........3-4 10400310-003 01/2013 IX-1  ©2010-13 Overland Storage, Inc.
  • Page 132 Configuration Active Sessions tab..........4-13 CHAP Accounts tab........... 4-15 Entity and iSNS Settings tab ......4-10 Overland Storage VSS ........7-1, 8-1 iSCSI Nodes tab..........4-11 Overland technical support ......... PR-iii Network Setup tab ..........4-7 overview ................ 5-1 iSCSI Nodes tab ............
  • Page 133 SnapSAN S1000 User Guide Index special icons ............... 4-44 Standby energy saving option........ 4-20 rack installation ............2-3 status of disk drives ..........4-17 RAID Group syslog ................4-5 create ..............4-20 system buzzer .............. 6-1 migration ............... 5-2 System Configuration RAID Groups Email Notification Settings tab......
  • Page 134 SnapSAN S1000 User Guide Index Virtual Disks tab ..........4-22 volume creation example ........4-28 Volume Creation Wizard......... 4-42 volume relationships..........1-7 VSS provider ..............5-9 VSS software............7-1, 8-1 warranty support ............2-1 Web Management Interface access..............3-1 hierarchy ............... 4-1 indicators and icons ..........

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