3–10
HSG80 Array Controller V8.7 Maintenance and Service Guide
Replacement Procedures for BA370 Enclosure Elements
Removing the Cache Module
Use the following steps to remove the cache module in a single-controller
configuration.
CAUTION: ESD can easily damage the cache module or DIMM. Wear a snug-fitting,
grounded ESD wrist strap.
1. Is the controller operating?
•
Yes. Connect a PC or terminal to the controller maintenance port.
•
No. Go to step 6.
2. From the host console, stop all host activity to the controller and dismount the
logical units in the subsystem.
3. If using a Windows NT or Windows 2000 platform, shut down the server.
4. Run the fault management utility (FMU) to obtain the last failure codes, if desired.
5. Shut down the controller with the following command:
SHUTDOWN THIS_CONTROLLER
NOTE: After the controller shuts down, the reset button and the first three LEDs turn O
N
(see Figure 3–1). This might take several minutes to happen, depending on the amount of
data that needs to be flushed from the cache module.
Proceed only after the reset button stops F
LASHING
and remains O
N
.
CAUTION: The ECB must be disabled—the status light is O
FF
—before disconnecting
the ECB cable from the cache module. Failure to disable the ECB might damage the
cache module.
6. Disengage both retaining levers and partially remove the controller cache
module—about halfway.
7. Disable the ECB by pressing the battery disable switch until the status light stops
F
LASHING
—approximately 5 seconds.
8. Remove the cache module:
a.
Disconnect the ECB Y-cable from the “other controller” cache module.
b.
Remove the cache module from the enclosure.
c.
Place the cache module on a grounded antistatic mat or in an antistatic bag.