Dell OpenManage Server Administrator Version 7.2 Manual de usuario descargar pdf (Pagina 247)

Protecting Your Virtual Disk with a Hot Spare 247

Protecting Your Virtual Disk with a

Hot Spare

When you create a redundant virtual disk using a RAID controller, you have

the opportunity to maintain system operations even when a disk fails. To do

so, you would assign a hot spare to the virtual disk. When a disk fails, the

redundant data is rebuilt onto the hot spare without interrupting system

operations.

Understanding Hot Spares

A hot spare is an unused backup physical disk that can be used to rebuild data

from a redundant virtual disk. Hot spares remain in standby mode. When a

physical disk that is used in a redundant virtual disk fails, the assigned hot

spare is activated to replace the failed physical disk without interrupting the

system or requiring your intervention. If a virtual disk using the failed physical

disk is not redundant, then the data is permanently lost without any method

(unless you have a backup) to restore the data.

Hot spare implementation is different for different controllers. For more

information.

• Considerations for Hot Spares on S100, and S300 Controllers

• Global Hot Spare Considerations on a SAS 6/iR

The following sections describe procedures for assigning a hot spare:

• Assign and Unassign Global Hot Spare

• Assign and Unassign Dedicated Hot Spare

Setting Hot Spare Protection Policy

The Hot Spare Protection Policy is supported only on Serial Attached SCSI

(SAS) controllers.

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Dell OpenManage Server Administrator Version 7.2 Manual de usuario Pagina 247