Silicon Graphics InfiniteStorage 4000 Series System Upgrade Manual page 70

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7. Turn off the Power switch on both controller canisters. Both controllers must be
powered down.
8. Unplug the power cord from the controller canister, and set the power cord aside.
9. Disconnect all of these cables from the controller canister:
Host interface cables
—
Drive interface cables
—
Ethernet cables
—
10. Remove the SFP transceivers from the controller canister.
11. Remove the controller canister.
a. Unlock and rotate the release handles out to release the controller canister.
b. Using the release handles and your hands, pull the controller canister out of
the controller tray.
Figure 44 Removing and Reinstalling a Controller Canister
12. Set the controller canister on a flat, static-free surface with the release handles
down and the host interface ports up.
13. Loosen the three thumbscrews that secure the top cover to the controller canister.
1. Release Handles
2. Locking Mechanisms
3. Controller Canister