Managing Dedicated Spares; Adding A Dedicated Spare; Deleting A Dedicated Spare - Impediment RS-1600-X24 User Manual

RS-1600-X24 User Guide
E.1 Managing Dedicated Spares
Dedicated spares are unused disk drives that you assign as a spare to a specific array. The disk must be
as large as the smallest member of the array. You cannot use a dedicated spare drive as a member of
an array or as a pool spare.
Although using a dedicated spare is the most secure way to provide spares for your arrays, it is also
expensive to keep an idle drive assigned to each array. An alternative method is to assign one or more
idle drives to the spare pool. See
E.1.1 Adding a Dedicated Spare
You assign dedicated spare drives to a specific array. If a member drive in the array fails, the X24
Subsystem uses a dedicated spare drive to automatically reconstruct the array. You can add dedicated
spare drives to mirrored (RAID 1 and RAID 10) and parity (RAID 3, RAID 4, RAID 5, and RAID 50) arrays
when you create the array or afterward. You can assign up to four dedicated spare drives to an array. For
more information about assigning spares when you create an array, see
page
Note You cannot add a spare that does not have enough capacity to replace the smallest member in the array.
To add a dedicated spare:
1 From the System Menu, select Array Menu and press Enter.
The Select Array screen displays with a list of existing arrays.
2 Select the array you want and press Enter.
The array menu displays.
3 Select Add Spare and press Enter T
The list of drives screen displays listing the available drives.
Note If a drive was a member of an array and was removed from the array, you cannot use it as a spare until
you clear the drive's metadata. For more information, see
page
To toggle the display between the drive model number, serial number, and the node and WWN, press T.
4 Select the drive you want to add as a spare and press Enter.
The system confirms the change.
5 Select Yes and press Enter.
E.1.2 Deleting a Dedicated Spare
You can delete a dedicated spare drive from an array at any time.
To delete a dedicated spare:
1 From the System Menu, select Array Menu and press Enter.
The Select Array screen displays with a list of existing arrays.
168
105.
177.
E.3, "Managing the Spare Pool", on page
F.1.2, "Clearing Metadata from a Drive", on
170.
C.1, "Creating Arrays", on