Silicon Graphics InfiniteStorage 4000 Series System Upgrade Manual page 35

Removing the
Controller Canisters
from the E2660
Controller-Drive Tray
Chapter 2: Upgrading Trays in the Storage Array
Figure 13 Controller Cover and Internal Parts
13. Remove the top cover from both controller canisters.
14. Go to "Upgrading the Cache Memory DIMM in the E2600 Controller-Drive
Trays" on page 33.
NOTE Before you remove the controller canisters, make sure that you set controller
A offline, as described in the following steps, to make sure that all the data currently
in the cache in controller A is successfully written to disk before the upgrade. This step
also makes sure that the data currently in the cache in controller B is successfully
written to disk before you turn off the power to both of the controller canisters.
1. Top Cover Latch Buttons
27