Controllers
A controller consists of a board, firmware, and software. It controls the drives and implements the
System Manager functions. This section describes how to replace a single controller or both
controllers in your EF300 or EF600 controller shelf.
Overview and requirements
Before you replace a controller, you need to be aware of certain requirements and considerations.
Requirements for replacing a controller
If you plan to replace a 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.
You can replace a controller canister while your storage array is powered on and performing host
I/O operations, if 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.
This section describes how to replace a controller canister in the following controller shelves:
• EF300 controller shelf
• EF600 controller shelf
Replace controller
This section describes the steps to replace a single controller in your EF300 or EF600 controller
shelf.
Before you begin
When you replace a failed controller canister, you must remove the battery, power supply, DIMMs,
fans, and HIC, if one is installed, from the original controller canister, and install them in the
replacement controller canister.
You can determine if you have a failed controller canister in two ways:
• The Recovery Guru in SANtricity System Manager directs you to replace the controller
canister.
• The amber Attention LED on the controller canister is on, indicating that the controller has a
fault.
Maintaining EF300 and EF600 Hardware
13
Controllers
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