Installing A New Raidset Or Mirrorset Member - HP StorageWorks HSG80 Array Controller V8.7 Maintenance And Service Manual

When a drive is replaced, the controller uses data from the other drives in the array
to reconstruct data on the replacement drive. If more than one drive is removed, a
complete data set is not available to reconstruct data on the replacement drives and
permanent data loss may occur.
• Never remove a drive while another drive in the same storage array is being
rebuilt.
A drive's Online LED Indicators flash green while it is being rebuilt. A replaced
drive is rebuilt from data stored on the other drives.
• Never turn a disk enclosure off while the initiator or controller is powered on or
active.
Doing so can cause the initiator or controller to mark the drives as "failed." This
may result in permanent data loss.
• If a drive is replaced while the system is off, it may be necessary to rebuild the
replaced drive.
Follow the instructions on the screen or those outlined in the system's reference
guide.
Use the following steps to remove a failed RAIDset or mirrorset member:
1. Connect a PC or terminal to the controller maintenance port that accesses the
reduced RAIDset or mirrorset.
2. Enable AUTOSPARE with the following command:
SET FAILEDSET AUTOSPARE
With AUTOSPARE enabled, any new disk drive—one that has not been in an
array before—inserted into the Port-Target-LUN (PTL) location of a failed disk
drive is automatically initialized and placed into the spareset.
3. Remove the failed disk drive.

Installing a New RAIDset or Mirrorset Member

To install a new RAIDset or mirrorset member, insert a new disk drive that satisfies the
replacement policy of the reduced storageset into the PTL location of the failed disk
drive.
NOTE: The controller automatically initializes a new disk drive and places this drive into the
spareset. As soon as the disk drive becomes a member of the spareset, the controller
automatically uses the drive to restore the reduced RAIDset or mirrorset. If initialization of the
new disk drive fails, the drive is placed into the failedset.
HSG80 Array Controller V8.7 Maintenance and Service Guide
Common Replacement Information and Procedures
2–15