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HSG80 Array Controller V8.7 Maintenance and Service Guide
Common Replacement Information and Procedures
Installing DIMMs
Use the following steps to install a DIMM in a cache module:
IMPORTANT: ACS version 8.7P, 8.7S and 8.7W installations require a 512 MB cache memory
configuration.
1. Insert each DIMM
1
into the appropriate slot
2
of the cache module, ensuring
that the notches in the DIMM align with the tabs in the slot (see Figure 2–8).
2. Press the DIMM gently into the slot until seated at both ends.
3. Engage the two retaining clips
3
for the DIMM.
4. Make sure both ends of the DIMM are firmly seated in the slot and both retaining
clips engage the DIMM.
5. Repeat step 1 through step 4 for each DIMM.
6. Install the cache module using steps in either Chapter 3 or Chapter 4.
Replacing a Failed Storageset Member
If a disk drive fails in a RAIDset or mirrorset, the controller automatically places the
disk drive into the failedset. If the spareset contains a replacement drive that satisfies
the storageset replacement policy, the controller automatically replaces the failed
member with the replacement drive. If the spareset is empty or does not contain a
satisfactory drive, the controller simply “reduces” the storageset so that the storageset
can operate without one of the members.
The storageset remains in this “reduced” state until the spareset contains a satisfactory
drive. If the controller senses a satisfactory drive in the spareset, the controller
automatically places the drive into the storageset and restores the storageset to normal.
Therefore, replacing a failed storageset member means putting a satisfactory drive
into the spareset.
IMPORTANT: For supported replacement procedures, see Replacing a Disk Device on
page 2–17
Removing a Failed RAIDset or Mirrorset Member
Use the following guidelines when replacing drives:
•
Never remove more than one drive at a time.