NetApp E Series - Page 17

Duplex configuration requirements
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 (two-controller) configuration, for the
following controller shelves:
• E5724 controller shelf
• E5760 controller shelf
About this task
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 then install them in the replacement controller canister.
This task is only for storage arrays with two controllers (duplex configuration).
This procedure applies to IOM12 and IOM12B drive shelves.
This procedure is for like-for-like shelf IOM hot-swaps or replacements. This means you can
only replace an IOM12 module with another IOM12 module or replace an IOM12B module with
another IOM12B module. (Your shelf can have two IOM12 modules or have two IOM12B
modules.)
What you’ll need
• A replacement controller canister with the same part number as the controller canister you are replacing.
(See step 1 to verify the part number.)
• An ESD wristband, or you have taken other antistatic precautions.
• #1 Phillips screwdriver.
• Labels to identify each cable that is connected to the controller canister.
• A management station with a browser that can access SANtricity System Manager for the controller. (To
open the System Manager interface, point the browser to the controller’s domain name or IP address.)
Step 1: Prepare to replace controller (duplex)
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.
Steps
1. Unpack the new controller canister, and set it on a flat, static-free surface.
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