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
Through the CLI, you can:
■Display a controller’s automatic rebuild on replacement status
■Enable automatic rebuild on replacement