Compaq 230039-001 - StorageWorks NAS Executor E7000 Model 904 Server Maintenance And Service Manual page 42

Removal and Replacement Procedures
2. Open the rear access panel. Refer to "Opening and Removing the Rear Access Panel" in
Note:
before replacing DIMMs.
3. Disengage the locking switch (1).
4. Press the release latches inward (2).
5. Pull the memory board up out of the server (3).
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this chapter.
Hot-plug replacement procedure: Determine which memory board contains the failed
DIMM by locating the memory board with an amber memory status LED and one or more
amber DIMM status LEDs. The Ready to Hot Plug LED must be green, indicating that
you can perform a hot-plug procedure.
If the Ready to Hot Plug LED is off on both boards, then you must power down the server
Hot-plug replacement procedure: After turning the locking switch to the unlock
position, the LEDs turn off, except the amber LEDs. Wait until all green LEDs are off
before proceeding. Make note of which DIMM status LED remains illuminated amber,
indicating the DIMM you need to replace.
Caution: Do not attempt to unlock the memory board in an operational server when the
Ready to Hot Plug LED is not green. This will generate an audible alarm and cause the
memory board LEDs to flash amber. Proceeding to remove the memory board after the
audible and visible alarms causes system failure.
Caution: To prevent system failure, do not remove the memory board from the server until
the memory status LED stops blinking.
Hot-plug replacement procedure: While the memory board with the failed or degraded
DIMM is being replaced, the system continues to read and write from the operational
memory board.
NAS e7000 v2 Maintenance and Service Guide