Dell PowerVault DL2000 User Manual download pdf (Page 32)

• Dell Management Console — The Dell Management Console (DMC) centrally monitors the status of Dell

systems. For more information about installing and using DMC, see the

Dell Management Console User’s Guide

at support.dell.com/manuals.

Recovering From Single Disk Failures

After you replace the failed disk drive within a RAID group, the appliance automatically rebuilds the disk group. The data

on the virtual disks that reside on the disk group is still available to the appliance and the appliance runs without any

interruption. The appliance operates in degraded mode until the rebuild operation is complete.

CAUTION: If a disk fails in the same RAID 1 or RAID 5 disk group during the rebuild operation, data loss occurs.

Use Server Administrator to monitor the progress and status of the RAID rebuild. If the rebuild does not begin

automatically, see the

Dell OpenManage Server Administrator User’s Guide

at support.dell.com/manuals to initiate the

rebuild manually. Server Administrator reports the status and progress of a rebuilding RAID group.

Recovering From Multiple Disk Failures

Data loss occurs if both disks in the RAID 1 group fail, two or more disks in a RAID 5 group fail, or three or more disks in

a RAID 6 group fail. After replacing the failed disks, depending on which RAID group failed, choose from the following

methods, to complete the recovery:

• Server disk group failure — The server RAID 1 group contains the operating system, CommVault Simpana, and

the DL Backup to Disk Appliance applications. See the System Recovery Map and follow the steps for the

operating system failure type. If the optional internal backup data RAID disk group fails, follow the procedure

below for storage array disk group failure.

• Storage array disk group failure — You can restore the backup sets archived to tape. Backup sets can also be

restored from a secondary appliance protecting the primary appliance. For more information about disaster

planning recovery procedures, see the CommVault Simpana Backup and Recovery documents.

Replacing Disks

When replacing disks, use only supported disks identified in the

Dell PowerVault DL Backup to Disk Appliance

Interoperability Guide

. Ensure that you replace the failed disk with a new disk of the same or greater capacity. If drives

of greater capacity are used, some usable disk space is lost in the RAID configuration. You can replace:

• Internal disks — To replace the appliance's internal disks, see the

Dell PowerVault DL2x00 Hardware Owner's

Manual

at support.dell.com/manuals.

• Disks in a storage enclosure — To replace disk drives in a storage enclosure, see the storage enclosure’s

Hardware Owner’s Manual at support.dell.com/manuals.

Reinstalling The Operating System

The operating system is preinstalled on the appliance. Perform the following procedure to reinstall the operating system.

Using The Dell Systems Build And Update Utility To Manually Recover The Operating

System

To reinstall the operating system, use the Dell Systems Build and Update Utility (SBUU) on the Dell Systems

Management Tools and Documentation media. The SBUU installs the operating system software and device drivers.

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Dell PowerVault DL2000 User Manual Page 32

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