The green Cache Active LED on the back of each controller is on when cached data needs to be written to
the drives. You must wait for this LED to turn off.
(1) Cache Active LED
7. From the Home page of SANtricity System Manager, select View Operations in Progress. Wait for all
operations to complete before continuing with the next step.
8. Power down the controller shelf.
a. Turn off both power switches on the controller shelf.
b. Wait for all LEDs on the controller shelf to turn off.
Step 2: Remove controller canister
Remove the controller canister so you can upgrade the new HIC.
Steps
1. Label each cable that is attached to the controller canister.
2. Disconnect all the cables from the controller canister.
To prevent degraded performance, do not twist, fold, pinch, or step on the cables.
3. If the HIC ports use SFP+ transceivers, remove them.
Depending on what type of HIC you are upgrading to, you might be able to reuse these SFPs.
4. Confirm that the Cache Active LED on the back of the controller is off.
The green Cache Active LED on the back of the controller is on when cached data needs to be written to
the drives. You must wait for this LED to turn off before removing the controller canister.
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