Dell™ PowerVault™ Modular Disk Storage Manager User’s Guide w w w . d e l l . c o m | s u p p o r t . d e l l . c o m...
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About This Guide Dell™ PowerVault™ Modular Disk (MD) Storage Manager software is used to create and manage multiple storage arrays. The software can be used on any host attached to the storage array, as well as on storage management stations connected to the same sub-network.
• Beneath the Array Selector is the Content Area. Several tabs appear in this area to group the tasks you can perform on the selected array. When you click on a tab, the Content Area displays links for the tasks you can perform.
• Replace physical disks • Modify the RAID level for a disk group Tools Tab • Rename a storage array • Set or change a password • View or enable premium features • Turn on indicator lights • Change enclosure ID numbers •...
For complete regulatory and safety information, see your Information Guide . Warranty information may be included within this document or as a separate one. Setting Up Your Dell PowerVault MD provides an overview of setting up • and cabling your storage array. •...
About Your Storage Array This chapter covers basic information about how to manage storage arrays from MD Storage Manager, including adding and removing arrays from the software, performing initial setup tasks, setting passwords on an array, and configuring alert notifications. For information on planning your storage array, see the Installation Guide.
NOTICE: Removing or manipulating an access virtual disk can cause a loss of management access. If you remove an access virtual disk mapping from an in-band-managed storage array, MD Storage Manager can no longer access the storage array. Do not modify the access virtual disk either in the operating system or with MD Storage Manager.
Adding Storage Arrays To add a storage array to MD Storage Manager, click New in the Array Selector area. A window is displayed that allows you to choose the automatic or manual process to add a new storage array. NOTE: Verify that your host or management station network configuration—...
• To add a storage array that uses out-of-band management, specify the host name or IP address of each controller in the storage array. NOTE: It can take several minutes for MD Storage Manager to connect to the specified storage array. Naming Storage Arrays Each storage array should be assigned a unique name.
To remove a storage array: 1 Click Remove located to the right of the drop-down menu in the Array Selector. 2 Click OK in the Remove dialog box. You can still manage the storage array from other storage management stations where it has been added. Setting Up Your Storage Array The Perform Initial Setup Tasks link located on the Summary tab provides links to the basic steps you should follow when initially setting up a storage...
6 Configure Host Access — Set up one or more hosts to access the storage array. See "Configuring Host Access" on page 43 for more information. 7 Configure storage array (2 options) Automatic (Simple) configuration • Step 1: Automatic Configuration — See "Creating Disk Groups and Virtual Disks"...
Storage Array Support Data Aggregated support data can be generated for a storage array to aid in remote troubleshooting and issue analysis. To generate the support data report: 1 Click the Support tab, then click Gather Support Information. 2 Click Browse to display the Collect All Support Data dialog box. 3 In the Save in drop-down box, navigate to the location where you want the report saved.
Enter the current password in the Current password text box. • Leave the New password and Confirm new password text boxes blank. If you forget your password, contact Dell for technical assistance. Password Guidelines Consider these guidelines when you create a password: •...
System Setup for Password Reset ® ® Microsoft Windows Operating Systems 1 Click Start → Programs → Accessories → Communication → HyperTerminal to run HyperTerminal. If HyperTerminal is not installed, click Control Panel → Add/Remove Programs → Add/Remove Windows Components, find HyperTerminal and click the check-box, then click Apply and OK.
NOTICE: Failure to stop data I/O to a non-fault-tolerant array before performing the following steps may result in loss of data. Please contact Dell Technical Support for a password reset Username and Password. 1 Stop all I/O to the array.
NOTE: If you require help with this procedure, contact Dell for technical assistance. For more information on contacting Dell, see the "Getting Help" chapter of the Hardware Owners Manual. Changing Expansion Enclosure ID Numbers When an MD1000 expansion enclosure is attached to an MD3000/MD3000i storage array for the first time, an enclosure ID number is assigned and maintained by the MD1000.
Sender e-mail settings include the SMTP and e-mail address information MD Storage Manager uses to send e-mail alerts. To configure sender e-mail settings: 1 Click the Tools tab, then click Set Up Email Alerts. 2 Enter the following information: • Sender email address —...
SNMP alerts. NOTE: You do not have to install MD Storage Manager on a system in order to display SNMP alerts. You need only install an appropriate SNMP service and application (such as the Dell IT Assistant). Storage Array...
Battery Settings A smart battery backup unit (BBU) can perform a learn cycle. The smart BBU module includes the battery, a battery gas gauge, and a battery charger. The learn cycle calibrates the smart battery gas gauge so that it provides a measurement of the charge of the battery module.
server or management station is unable to communicate with the MD3000 or MD3000i, you must restart the SMagent software manually using the following procedure: 1 Click Start → Settings → Control Panel → Administrative Tools → Services. Click Start → Administrative Tools → Services. 2 In the Services dialog, select Modular Disk Storage Manager Agent.
After the program completes the startup process, text similar to the following messages is displayed: Storage Manager Agent, Version 09.1x.00.00 Built Wed Aug 15 16:54:46 CDT 2006 Copyright (C) 2006. All rights reserved. checking device /dev/rdsk/c0t0d0s2 : skipping checking device /dev/rdsk/c2t3d18s2 : skipping checking device /dev/rdsk/c2t3e16s2 : skipping checking device /dev/rdsk/c2t3d14w2 : skipping...
Using iSCSI This chapter provides information on using iSCSI in MD Storage Manager. For iSCSI prerequisite requirements and detailed step-by-step instructions on setting up and configuring iSCSI, see the Installation Guide. Using the iSCSI Tab The iSCSI tab is shown in the MD Storage Manager only when the controllers contain iSCSI host ports.
Changing the iSCSI Target Authentication 1 Click the iSCSI tab, and then click Change Target Authentication. 2 Select None if no authentication is required for any initiator to access the target. NOTE: If you select None, any initiator can access this target. Use this option only if you do not require secure data.
must enter the same CHAP secret that is defined in the iSCSI initiator, and you must define a CHAP secret on the target (the storage array) that must be configured in every iSCSI initiator that will connect to the target. For more information on CHAP , see "Understanding CHAP Authentication"...
Changing the iSCSI Target Identification You cannot change the iSCSI target name, but you can associate an alias with the target for simpler identification. Aliases are useful because the iSCSI target names are not intuitive. You should provide an iSCSI target alias that is meaningful and easy to remember.
Configuring the MD3000i iSCSI Host Ports Use the configuration dialog for the iSCSI host ports to set up the MD3000i iSCSI host ports to use with storage arrays in a storage area network (SAN). 1 Click the iSCSI tab, and then click Configure iSCSI Host Ports. 2 Select the controller in the iSCSI host port field, and then use one of these methods to configure the port: Automatically obtain the configuration using one of the following...
(continued) Table 3-2. Advanced iSCSI Host Port Settings Setting Description Ethernet Priority The network priority can be set from lowest to highest. Although network managers must determine these mappings, the IEEE has made broad recommendations: • 0 — lowest priority (default) •...
In the confirmation window, type yes to confirm that you want to end the iSCSI session, and then click OK. NOTE: If you end a session, any corresponding connections terminate the link between the host and the storage array, and the data on the storage array is no longer available.
Confirm that you want to set the baseline statistics in the dialog that appears. The baseline time shows the latest time you set the baseline. The sampling interval is the difference in time from when you set the baseline until you launch the dialog or click Refresh. NOTE: You must first set a baseline before you can compare baseline statistics.
(continued) Table 3-3. Host Topology Actions Desired Action Steps to Complete Action Add an iSCSI Initiator. Click the Modify tab, and then click Edit Host Topology. Select the host you want to add an iSCSI initiator to and click Add. Type or select an iSCSI initiator name and label for the iSCSI initiator and click OK.
Event Monitor An event monitor is provided with MD Storage Manager. When enabled, the event monitor runs continuously in the background and monitors activity on the managed storage arrays. If the event monitor detects any critical problems, it can notify a host or remote system using e-mail, Simple Network Management Protocol (SNMP) trap messages, or both.
Disabling the Event Monitor Disable the event monitor if you do not want the system to send alert notifications. If you are running the event monitor on multiple systems, disabling the event monitor on all but one system prevents the sending of duplicate messages.
About Your Host This chapter covers basic information about configuring host groups and host access, host topology, and I/O data path protection. A host is a system that accesses a storage array and is mapped to the virtual disks through one or more host connections. Hosts have the following attributes: •...
To begin configuring host access, click the Configure tab and then click either Configure Host Access (Automatic) or Configure Host Access (Manual). See the appropriate section for manual configuration, depending on whether you are using SAS HBA or iSCSI. Automatic Configuration NOTE: The host must be connected (iSCSI or SAS) and the host agent restarted after the connection is made in order to use automatic configuration.
4 Specify the HBA host ports by choosing known host ports or by manually defining host ports. To select a host port that is already recognized by MD Storage Manager, click a host port in the Known HBA host ports list, then click Add. To manually define a host port, click New, enter the HBA host port and Alias in the Enter New HBA Host Port dialog box, and then click Add.
To manually define an initiator, click New, enter the iSCSI initiator name and iSCSI initiator label in the Enter new iSCSI initiator dialog box, and then click Add. NOTE: The initiator name entered must match the name on a host server that will connect to the storage array.
Host Groups A host group is a logical entity of two or more hosts that share access to specific virtual disks on the storage array. You create host groups with MD Storage Manager. All hosts in a host group must have the same host type (operating system). In addition, all hosts in the host group must have special software, such as clustering software, to manage virtual disk sharing and accessibility.
4 Select the host group to which you want to move the host. 5 Click OK. The host is moved into the host group. The host retains the virtual disk mappings assigned to it, and inherits the virtual disk mappings assigned to the group. Other hosts in the group do not inherit the mappings of the added host.
The host retains the virtual disk mappings assigned to it, and inherits the virtual disk mappings assigned to the group to which it is moved. The host loses the virtual disk mappings assigned to the group from which it was moved.
Host Context Agent The host context agent discovers the host topology. The host context agent starts when the host is started and stops when the host is turned off. The topology discovered by the host context agent can be viewed by clicking Configure Host Access (Automatic) in the Configure tab in the MD Storage Manager.
I/O Data Path Protection You can have multiple host-to-array connections for a host. Make sure to select all of the connections to the array when configuring host access to the storage array. NOTICE: Refer to the Installation Guide for more information on cabling configurations.
Disk Groups and Virtual Disks Following is a list of terms used throughout this chapter: • Disk Group — A set of physical disks that are logically grouped and assigned a RAID level. Every disk group provides the overall capacity required to create one or more virtual disks.
Creating Disk Groups and Virtual Disks Disk groups are created in the unconfigured capacity of a storage array, and virtual disks are created in the free capacity of a disk group. The maximum number of physical disks supported in a disk group is 30. The hosts attached to the storage array read and write data to the virtual disks.
performed in the department: Accounts Receivable (AR), Accounts Payable (AP), internal billing, and so forth. In this scenario, the AR and AP virtual disks probably need more capacity than the internal billing virtual disk. NOTE: In Linux, the host must be rebooted after deleting virtual disks to reset the /dev entries.
3 Select Manual on the Create Virtual Disks – Physical Disk Selection Choices page, then click Next. 4 Select the RAID level for the new disk group. 5 To select one physical disk to add to the disk group, click the disk of your choice in the Unselected physical disks list.
15 To map the new virtual disk to a host now, select Map now and assign a logical unit number (LUN) to the virtual disk in the drop-down box. To map the new virtual disk to a host later, select Map later. 16 Click Finish to create the new disk group and the first virtual disk in the group.
If you plan to create multiple virtual disks, wait until you have created all the virtual disks to register them. Waiting prevents you from having to register virtual disks more than once. Linux NOTE: You need super-user (Linux) privileges to run the utility.
coverage for the storage array. The number and type of hot spare drives is determined based on the number, type, and capacity of physical disks in the storage array. To add hot spare drive protection using automatic configuration: 1 Click the Configure tab, then click Configure Hot Spares. 2 To automatically assign hot spare drives, click Configure Hot Spares (Automatic).
Host-to-Virtual Disk Mapping After you create virtual disks, you must map them to the host(s) connected to the array. When you configure host-to-virtual disk mapping, consider these guidelines: • Each virtual disk in the storage array can be mapped to only one host or host group.
4 To map the disk to a different host or host group, click Change located to the right of the list. 5 To remove the disk mapping to a host or host group, click Remove located to the right of the list. Changing Controller Ownership of the Virtual Disk If the host has a single data-path to the MD storage array, the virtual disk must be owned by the controller to which the host is connected.
Administrative Tools and select the Disk Management MMC option to format and partition the disk. If the host server is running Windows Server 2008 Core version, partition and format the virtual disk using the Microsoft DiskPart utility. Disk Group and Virtual Disk Expansion Adding free capacity to a disk group is achieved by adding unconfigured capacity on the array to the disk group.
If you receive a warning that the snapshot repository virtual disk is becoming full, you may expand the snapshot repository virtual disk from MD Storage Manager. See "Snapshot Repository Capacity" on page 81 for step-by-step instructions. Disk Group Migration Disk group migration allows you export a disk group so that you can import the disk group to a different storage array.
Basic Steps for Exporting a Disk Group On the source storage array: 1 Save the storage array configuration. 2 Stop all I/O, and unmount or disconnect the file systems on the virtual disks in the disk group. 3 Back up the data on the virtual disks in the disk group. 4 Locate the disk group, and label the physical disks.
On the target storage array: 1 Insert the exported physical disks into the available physical disk slots. 2 Review the Import Report for an overview of the disk group that you are importing. 3 Check for non-importable components. 4 Confirm that you want to proceed with the import procedure. NOTE: Some settings cannot be imported during the import disk group procedure.
• Unfixable error — Data could not be read and parity or redundancy information could not be used to regenerate the data. For example, redundancy information cannot be used to reconstruct the data on a degraded virtual disk. The error is reported to the event log. Changing Media Scan Settings 1 Click the Tools tab, then click Change Media Scan Settings.
Microsoft Services Virtual Disk Service The Microsoft Virtual Disk Service (VDS) is supported on your RAID storage array. Microsoft VDS is a set of application programming interfaces (APIs) that provides a single interface for managing disks and other storage hardware, including creating virtual disks on those physical disks. Volume Shadow-Copy Service The Microsoft Volume Shadow-copy Service (VSS) is a storage management interface for Microsoft Windows operating systems.
If you ordered this feature, you received a Premium Feature Activation card shipped in the same box as your Dell PowerVault MD storage array. Follow the directions on the card to obtain a key file and to enable the feature.
Deleting a snapshot does not affect data on the source virtual disk. The information that follows will better prepare users for using the snapshot virtual disk premium feature of the Dell PowerVault systems. NOTE: The following host preparation sections also apply when using the snapshot feature through the CLI interface.
About the Simple Path Using the simple path, you can specify the following parameters for your snapshot virtual disk: • Snapshot Virtual Disk Name — A user-specified name that helps you associate the snapshot virtual disk to its corresponding snapshot repository virtual disk and source virtual disk.
For details on mapping the snapshot virtual disk to the secondary node, refer to the Dell PowerEdge™ Cluster SE600W Systems Installation and Troubleshooting Guide on support.dell.com NOTE: You can create concurrent snapshots of a source virtual disk on both the source disk group and on another disk group.
3 Remove the drive letter(s) of the source in Windows or unmount the virtual drive(s) in Linux to help guarantee a stable copy of the drive for the Snapshot. If this is not done, the snapshot operation will report that it has completed successfully, but the snapshot data will not be updated properly.
5 On the Create Snapshot Virtual Disks – Select Path screen, select the Simple path. NOTE: A snapshot repository virtual disk requires 8 MB of free space. If the required free space is not available in the disk group of the source virtual disk, the Create Snapshot Virtual Disks feature defaults to the advanced path.
Use unconfigured capacity and create a new disk group for the snapshot repository virtual disk. Dell recommends placing the snapshot repository virtual disk within the disk group of the source virtual disk. This ensures that if drives associated with the disk group are moved to another storage array, all the virtual disks associated with the snapshot virtual disk remain in the same group.
For details on mapping the snapshot virtual disk to the secondary node, refer to the Dell PowerEdge™ Cluster SE600W Systems Installation and Troubleshooting Guide on support.dell.com The destination of a snapshot repository virtual disk is determined based on the free capacity available in the disk group.
Before creating a Snapshot Virtual Disk, note the following: • The following types of virtual disks are not valid source virtual disks: snapshot repository virtual disks, snapshot virtual disks, target virtual disks that are participating in a virtual disk copy. NOTE: Virtual Disk Copy is an Advanced (Premium) feature.
4 Follow any additional instructions for your operating system. Failure to follow these additional instructions can create unusable snapshot virtual disks. NOTE: If your operating system requires additional instructions, you can find those instructions in your operating system documentation. After your host server has been prepared, see "Creating the Snapshot Using the Advanced Path"...
6 Click Next. 7 Type a name for the snapshot in the Snapshot virtual disk name text box. 8 Type a name for the snapshot repository virtual disk in the Snapshot repository virtual disk name text box. 9 Click Next. 10 Choose whether to create the snapshot virtual disk from unconfigured capacity or free capacity.
15 Click Finish to create the snapshot virtual disk and the associated snapshot repository virtual disk. 16 After you have created one or more snapshot virtual disks, mount or reassign a drive letter of the source virtual disk. 17 If needed, assign host-to-virtual disk mapping between the snapshot virtual disk and the host operating system that accesses it.
• Whether you use the software-supplied sequence number that (by default) populates the Snapshot virtual disk name or the Snapshot repository virtual disk name field, the next default name for a snapshot or snapshot repository virtual disk still uses the sequence number determined by the software.
• Any virtual disk in the disk group is in any state of modification. • The controller that has ownership of this virtual disk is currently adding capacity to another virtual disk. Each controller can add capacity to only one virtual disk at a time. •...
To disable a snapshot virtual disk: 1 Click the Modify tab, then click Modify snapshot virtual disks. 2 Click Disable Snapshot Virtual Disks. 3 Highlight the snapshot virtual disk to be disabled and click Disable beneath the list. 4 In the Confirm Disable Snapshot Virtual Disk dialog box, type yes and then click OK.
4 Remove the drive letter(s) of the source and (if mounted) snapshot virtual disk in Windows or unmount the virtual drive(s) in Linux to help guarantee a stable copy of the drive for the Snapshot. If this is not done, the snapshot operation will report that it has completed successfully, but the snapshot data will not be updated properly.
If you ordered this feature, you received a Premium Feature Activation card that shipped in the same box as your Dell PowerVault MD storage array. Follow the directions on the card to obtain a key file and to enable the feature.
Reasons to use virtual disk copy include the following: • Copying data for improved access — As your storage requirements for a virtual disk change, you can use a virtual disk copy to copy data to a virtual disk in a disk group that uses drives with larger capacity within the same storage array.
Virtual Disk Read/Write Permissions After the virtual disk copy is complete, the target virtual disk automatically becomes read-only to the hosts. The target virtual disk rejects read and write requests while the virtual disk copy operation has a status of Pending or In Progress or if the operation fails before completing the copy.
Virtual Disk Copy Restrictions Before you perform any virtual disk copy tasks, understand and adhere to the restrictions listed in this section. The restrictions apply to the source virtual disk, the target virtual disk, and the storage array. • While a virtual disk copy has a status of In Progress, Pending, or Failed, the source virtual disk is available for read I/O activity only.
Creating a Virtual Disk Copy Use the Create Virtual Disk Copies feature on the Configure tab to create a full copy of a source virtual disk. This operation overwrites any existing data on the target virtual disk. Once the virtual disk copy has started, all I/O activity to the source virtual disk is read-only.
4 Remove the drive letter(s) of the source and (if mounted) virtual disk in Windows or unmount the virtual drive(s) in Linux to help guarantee a stable copy of the drive for the virtual disk. If this is not done, the copy operation will report that it has completed successfully, but the copied data will not be updated properly.
5 Set the copy priority for the virtual disk copy and click Next. The source virtual disk, the target virtual disk, and the copy priority setting that you selected appear on the Create virtual disk copies—Confirm Copy Settings dialog. The higher priorities allocate more resources to the virtual disk copy at the expense of the storage array’s performance.
You can change the copy priority for a virtual disk copy in the following circumstances: • Before the virtual disk copy begins See "Creating a Virtual Disk Copy" on page 89. • While the virtual disk copy is in progress Click the Modify tab, then click Manage Virtual Disk Copies.
Preparing Host Servers to Recopy a Virtual Disk NOTICE: Before you create a new copy of a source virtual disk, stop any data access (I/O) activity or suspend data transfer to the source virtual disk (and, if applicable, the target disk) to ensure that you capture an accurate point-in-time image of the source virtual disk.
Recopying the Virtual Disk After first preparing the host server(s) as specified in the preceding procedure, complete the following steps to create a new virtual disk copy for an existing copy pair: 1 Click the Modify tab, and then click Manage virtual disk copies. You can only select one copy operation at a time to be recopied.
3 You must register the target virtual disk with the operating system before you can use the new virtual disk. Perform the following steps: Enable write permission on the target virtual disk by either removing the virtual disk copy pair (see "Removing Copy Pairs" on page 95) or explicitly setting write permission.
NOTE: If you ordered this feature, you received a Premium Feature Activation card shipped in the same box as your Dell PowerVault MD storage array. Follow the directions on the card to obtain a key file and enable the feature.
Firmware Downloads You can download the following types of firmware images with MD Storage Manager: • RAID controller module firmware that manages the storage array controllers • RAID nonvolatile static random access memory (NVSRAM) images that specify the default settings for the storage array controllers •...
I/O to the array can continue while you are upgrading RAID controller and NVSRAM firmware. NOTE: Dell recommends that the firmware and NVSRAM be upgraded during a maintenance period when the array is not being used for I/O. NOTE: The RAID enclosure must contain at least two disk drives in order to update the firmware on the controller.
11 A Confirm Download dialog box appears listing the current versions and the versions you selected of the RAID controller and NVSRAM firmware. To complete the download, click Yes. Downloading Only NVSRAM Firmware Use the following procedure to download NVSRAM firmware: 1 Click the Support tab, then click Download firmware.
Downloading Physical Disk Firmware Use the following procedure to download physical disk firmware: NOTE: Dell recommends stopping all I/O to the array when downloading physical disk firmware. NOTE: Due to a limitation with Linux, physical disk firmware updates must be performed using out-of-band management only.
All I/O to the array should be stopped before performing the upgrade. NOTE: Due to the nature of the enhancements made by the 07.xx firmware, once the upgrade to the 07.xx firmware is made, Dell does not support converting back to the 06.xx firmware. Firmware Downloads...
2 If you are running 06.70.xx.xx firmware, perform the following steps to upgrade to 07.35.xx.xx firmware. Run the Modular Disk Storage Manager Firmware Upgrade utility. (Start→Programs→Dell→MD Storage Manager→Modular Disk Storage Manager Firmware Upgrade or equivalent based on the operating system).
NOTE: Arrays not in an optimal state must be made optimal before they can be upgraded. NOTE: Multiple arrays of the same type (for example, all MD3000 or MD3000i) can be upgraded at the same time with the utility. Click on the Download symbol and the firmware/NVSRAM pop-up will be displayed.
Troubleshooting Problems The following sections provide information to assist you in resolving problems that may occur with your MD Storage Array. Recovery Guru The Recovery Guru is a component of MD Storage Manager that diagnoses critical events on the storage array and recommends step-by-step recovery procedures for problem resolution.
You can also use this utility to resolve duplicate signature problems for snapshot virtual disks. ® From a MS-DOS window on a host running Windows, navigate to C:\Program Files\Dell\MD Storage Manager\util and run the following command: SMrepassist -f <filesystem-identifier> Troubleshooting...
where -f flushes all the memory-resident data for the file system indicated by <filesystem-identifier>, and <filesystem-identifier> specifies a unique file system in the following syntax: drive-letter: <mount-point-path> The file system identifier might consist of only a drive letter, as in the following example: SMrepassist -f E: NOTE:...
Unidentified Devices An unidentified node or device occurs when the MD Storage Manager cannot access a new storage array. Causes for this error include network connection problems, the storage array is turned off, or the storage array does not exist. NOTE: Before beginning any recovery procedure, make sure that the host-agent software is installed and running.
Make sure that the network can access the host by using the ping command in the following syntax: ping <host-name-or-IP-address-of-the-host>. If the network can access the host, continue to step c. If the network cannot access the host, skip to step d. Remove the host with the unresponsive status from the MD Storage Manager, and add that host again.
A new version of MD Storage Manager might be needed to manage the storage array with the new version of the controller firmware. If this problem exists, see the Dell support website at support.dell.com. 6 Look to see if there is too much network traffic to one or more controllers.
Enclosure Hardware Replacement, Maintenance, and Configuration Considerations Removing and Inserting Enclosure Management Modules on Attached Expansion Enclosures The following procedures describe how to safely remove and insert an enclosure management module (EMM) from an expansion enclosure attached to the MD3000/MD3000i. NOTICE: Failure to follow these guidelines may result in a physical disk failing during removal and/or inadvertent removal of its redundant data path.
2 After attaching the SAS cables, wait at least three minutes for the EMM to reach optimal state. NOTE: You may experience a transitional failure on multiple EMMs in the MEL log while the system updates. Removing and Inserting Physical Disks Refer to the following guidelines to ensure that physical disks are safely removed from and inserted into the MD3000/MD3000i RAID storage array.
MD3000 Cluster Configuration Guidelines for Standalone Host Servers If one of the standalone host servers you are planning to configure into a cluster environment is running MD Storage Manager and has a virtual disk mapped to the array, use that host to create the Host Group and quorum virtual disk mapping.