Requirements for replacing a controller
If you plan to replace a controller or add a second controller, keep the following requirements in
mind.
Requirements for replacing a failed controller
• You must have a replacement controller canister with the same part number as the controller
canister you are replacing.
• You have an ESD wristband, or you have taken other antistatic precautions.
• You must use labels to identify each cable that is connected to the controller canister.
• You must have a #1 Phillips screwdriver.
• You must have installed SANtricity Storage Manager on a management station, so you can use
the storage array's command line interface (CLI).
If this software has not yet been installed, follow the instructions in the
Linux express
configuration
,
Windows express configuration
, or
VMware express configuration
to download
and install it.
Duplex configuration
For a controller shelf with two controllers (duplex configuration), you can replace a controller
canister while your storage array is powered on and performing host I/O operations, as long as the
following conditions are true:
• The second controller canister in the shelf has Optimal status.
• 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.
Replace controller in duplex configuration
You can replace a controller canister in a duplex configuration, which is a two-controller module
configuration within the storage array. Each controller canister contains a controller card, a battery,
and an optional host interface card (HIC). When you replace a controller canister, you must remove
the battery and HIC, if one is installed, from the original controller canister, and install them in the
replacement controller canister.
Steps
1. Prepare to replace controller (duplex) on page 20
You prepare to replace a controller canister by verifying that the replacement controller canister
has the correct FRU part number, backing up the configuration, and collecting support data. If the
controller is still online, you must take it offline.
2. Remove failed controller (duplex) on page 22
You remove a controller canister to replace the failed canister with a new one. Perform this task
only if your storage array has two controllers (duplex configuration).
3. Install new controller (duplex) on page 27
You install a new controller canister to replace the failed one. Perform this task only if your
storage array has two controllers (duplex configuration).
4. Complete controller replacement (duplex) on page 32
You complete the controller replacement by placing the controller online and confirming that the
storage array is working correctly. Then, you can collect support data and resume operations.
Controllers |
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