|Power Supplies |
Attention: Possible data loss – If you continue this procedure while I/O operations are occurring,
the host application might lose access to the data because the storage is not accessible.
4. Wait for any data in cache memory to be written to the drives.
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.
5. 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.
What to do next
Go to Power down controller.
Power down the controller
You power down the affected controller so you can securely replace your failed power supply. To power down
the controller you label the cables and disconnect them from the controller.
Before you begin
• You must use labels to identify each cable that is connected to the controller canister.
• You have an ESD wristband, or you have taken other antistatic precautions.
Procedure
1. Put on an ESD wristband or take other antistatic precautions.
2. Label each cable that is attached to the controller canister.
3. Disconnect all the cables from the controller canister.
Attention: To prevent degraded performance, do not twist, fold, pinch, or step on the cables.
4. Confirm that the Cache Active LED on the back of the controller is off.
What to do next
Go to Remove failed power supply.
Remove failed power supply
You remove a failed power supply so you can replace it with a new one. When you remove a power supply, you
slide the part out of the shelf.
Before you begin
• You have an ESD wristband, or you have taken other antistatic precautions.
Procedure
1. Unpack the new power supply, and set it on a level surface near the drive shelf.
Save all packing materials for use when returning the failed power supply.
2. Locate the tab to the right of the power supply and press it towards the power supply unit.
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