Chapter 5. Replacing Components
EK–SMCPR–UG. A01
5–3
5.3
Array Controller Replacement
Figure 5-1 Array Controllers and Cache Modules
CXO5925B
Lever
1 2 3 4 5 6
1 2 3 4 5 6
Controller
module A
Controller
module B
Cache
module A
Cache
module B
PVA
EMU
5.3.1 Array Controller Removal
Use the following steps to remove an array controller:
1. From the host console, dismount the logical units in the subsystem. If you are using a
Windows NT® platform, shut down the server.
2. If the array controller is operating, connect a PC or terminal to the array controller’s
maintenance port. If the array controller is not operating, go to step 5.
3. Run FMU to obtain the last failure codes, if desired.
CAUTION
The cache module may contain data if the array controller
crashed and you weren’t able to shut it down with the
SHUTDOWN
controller command.
4. Shut down the array controllers. In single array controller configurations, shut down
“this controller.” In dual-redundant controller configurations, shut down the “other
controller” first, then shut down “this controller” with the following commands: