Technical data

Chapter 2: Upgrading Trays in the Storage Array 15
Figure 2 Controller Top Cover, Internal Parts, and Faceplate
1. Cache Backup Memory Device Slot Locations
2. Cache Memory DIMM Slot Locations
12. Go to "Upgrading a Cache Memory DIMM in the CE7900 Controller Canister"
on page 15.
Upgrading a Cache
Memory DIMM in the
CE7900 Controller
Canister
If you are upgrading the cache memory DIMMs in one controller canister, you must
increase the capacity of the cache memory DIMMs in the other controller canister in
the CE7900 controller tray. You also must increase the capacity of the cache backup
memory devices in both controller canisters.
Make sure that the size of the cache memory DIMMs that you are upgrading in both
controller canisters are of equal capacity. The following table lists the cache memory
DIMM configurations.