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v Creating an assigned hot-spare drive (action)
v Deleting a hot-spare drive (action)
v RAID levels that can use a hot-spare or standby hot-spare drive
Rebuilding
a hot-swap drive: A hot-swap rebuild refers to a rebuild operation that is
started by the controller when it detects that a drive that is part of an array and in
the defunct state has been removed and reinserted on the SCSI cable or backplane.
The reinsertion of the physical drive, whether it is the same drive or a new drive,
will trigger the controller to start the rebuild operation. During the rebuild
operation, the drive being rebuilt is in the rebuild state, and the logical drive
remains critical until the rebuild operation has been successfully completed.
On most servers, when a hot-spare drive is available, the rebuild operation begins
automatically without the need to replace the failed drive. If more than one drive
fails within the same array, no rebuild takes place. If multiple drives fail in
separate arrays (one physical drive per array), the controller initiates a rebuild
operation for the logical drives within the array containing the first failed physical
drive. This rebuild operation is performed on the first hot-spare drive of sufficient
size to become a valid member of the array.
Complete the following steps to start a hot-swap rebuild:
1. Without removing the drive completely, gently remove the physical drive from
the server, using the handle of the hot-swap tray. If necessary, refer to the
documentation that comes with your server for information about removing a
physical drive.
Attention: When power is removed from a hot-swap drive, the drive
immediately parks the heads, locks the actuator in the ″landing zone,″ and
begins spinning down. However, the spinning down of the disk might require
up to 20 seconds after power is removed. Do not move the drive while it is
spinning down. Moving the drive while it is spinning down might damage the
drive.
2. Wait 20 seconds to allow the physical drive to completely stop spinning.
3. If you are certain there is nothing wrong with the physical drive you removed,
gently reinstall the drive into the server. Make sure the drive is completely
installed in the backplane connector.
Otherwise, replace the physical drive with a new drive that is the same size (or
larger) and continue with the rebuild operation.
Note:
a. If multiple drives fail in separate arrays (one physical drive per
array), replace each defunct physical drive. If multiple physical drives
fail at the same time within the same array, contact your service
representative.
b. Although it is possible to rebuild a defunct physical drive to an
online physical drive that is defective, avoid doing so.
More
information
v Rebuilding a defunct drive
v Recovering from defunct drives
v Manually rebuilding a defunct drive
v Changing the rebuild rate (action)
v Unblocking a logical drive (action)
146 ServeRAID Manager Installation and User's Guide