HP Array Controller HSG V8.7 Software - Manual (Page 266)

6–20 HSG80 User’s Guide
Upgrading Cache Memory
The cache module may be configured as shown in Figure 5–7 on page
5-42 and Table 6–2 on page 6–20.
Table 6–2 Cache Module Memory Configurations
In order to upgrade cache memory, the controller must be shut down.
Use the following steps to upgrade or add DIMMs:
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 controller is operating, connect a PC or terminal to the controller’s
maintenance port.
3. Shut down the controllers. In single 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:
SHUTDOWN OTHER_CONTROLLER
SHUTDOWN THIS_CONTROLLER
When the controllers shut down, their reset buttons and their first three
LEDs are lit continuously. This may take several minutes, depending on
the amount of data that needs to be flushed from the cache modules.
Caution ESD can easily damage a cache module or a DIMM. Wear a
snug-fitting, grounded ESD wrist strap.
4. Disable the ECB for the cache module in which you will be adding or
replacing DIMMS by pressing the battery disable switch until the status
light stops blinking—about five seconds.
Memory DIMMs Quantity Location
64 MB 32 MB 2 MC0-1 and MC1-3
128 MB 32 MB 4 MC0-1, MC0-2,
MC1-3, and MC1-4
256 MB 128 MB 2 MC0-1 and MC1-3
512 MB 128 MB 4 MC0-1, MC0-2,
MC1-3, and MC1-4