Hp Workstation xw8000 User Manual download pdf (Page 74)

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Adaptec SCSI RAID 2120S/2200S Software User’s Guide

Enabling Spares

A spare disk (also called a “hot spare”) is a disk that you configure

to recover data from a failed segment/disk in a redundant array.

To assign one or more spare disks for a single array, use the

container set failover command. To assign one or more

spare disks for all arrays, use the container set

global_failover command. The main characteristic of these

commands is that you must “manually” assign the spare disk to

one or more arrays. In fact, you might consider the previously

described spare mechanism as “manually set spare.”

Note: RAID 1, 5 10 and 50 use the spare assignment if a disk

fails. (RAID 1, 5, 10 and 50 are often referred to as redundant

arrays).

Automatic rebuild on replacement allows you to replace a failed

disk with a replacement disk. The controller automatically assigns

the disk you insert as a hotspare without your having to first assign

it manually using the container set failover or

container set global_failover command.

See the Adaptec SCSI RAID Software Reference Guide for more

information on the container set failover and container

set global_failover commands.

Caution: The controller deletes any data on the replacement

disk when automatic rebuild on replacement is enabled and

you remove the failed disk and insert the replacement disk in

the failed disk’s slot.

Note: The automatic spare feature works only with disks that

reside in an SAF-TE or SES enabled enclosure.

Through the CLI, you can:

■ Display a controller’s automatic rebuild on replacement status

■ Enable automatic rebuild on replacement

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Hp Workstation xw8000 User Manual Page 74