• You have one power canister that is installed and running.
• You have an ESD wristband, or you have taken other antistatic precautions.
• You can replace a power canister while your storage array is powered on and performing host I/O
operations, as long as the following conditions are true:
• The other power canister in the shelf has Optimal status.
While you perform the procedure, the other power canister supplies power to both fans to
ensure that the equipment does not overheat.
• The OK to remove field in the Details area of the Recovery Guru in SANtricity System Manager displays
Yes, indicating that it is safe to remove this component.
If the second power canister in the shelf does not have Optimal status or if the Recovery
Guru indicates that it is not OK to remove the power canister, contact technical support.
Fan canister
Each 60-drive controller shelf or drive shelf includes two fan canisters.
Shelf types for a fan canister
You can replace a fan canister in the following shelves:
• E5760 controller shelves
• DE460C drive shelf
The Replace fan canister topics do not describe how to replace a failed fan canister in a DE6600 drive tray,
which might be connected to the controller shelf.
The following figure shows a fan canister:
The following figure shows the back of a DE460C shelf with two fan canisters:
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