Setting A Physical Drive As A Spare - Compaq 124708-001 - ProLiant Cluster - 1850 Software User's Manual

3-26 Compaq ProLiant CL1850 Software User Guide

Setting a Physical Drive as a Spare

NOTE: Spare drives serve as spares to all logical drives. They are not grouped with a
particular logical drive.
How a Spare Works
If a physical drive fails in a RAID 1, RAID 0+1, RAID 4, or RAID 5
logical drive, the spare automatically replaces the failed physical drive
and the controller reconstructs all logical drives the failed physical drive
was a member of.
Once the controller writes data to a spare, the spare becomes part of the
same device group in which a device failed.
Once the controller writes data to a spare, the status of the spare changes
to Good.
To Define a Spare Physical Drive
1. In the main window, click the physical drive to be used as a spare. The
physical drive must be in the Available state.
2. From the Storage menu, choose Physical Drive, then choose Make
Spare.
NOTE: The spare must have a capacity equal to or greater than the failed physical drive
for an automatic reconstruct to start.
Managing Spare Physical Drives
Making a spare physical drive part of a logical drive will protect the integrity
of the RAID setup. This proves especially true for logical drives that have
RAID requirements of two or more physical drives. Should one physical drive
fail, the logical drive will automatically activate the spare physical drive as an
instant replacement for the failed one.
Managing Failed Physical Drives
To return a failed physical drive to a nonfailed state, from the Storage menu,
select Physical Drive, and then select Clear Failure.
You can easily identify a failed physical drive from the main screen because
the failed icon will appear. See Table 3-5 for the physical drive icons.