Two-controller configuration
If the controller shelf has two controllers, 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 ThinkSystem System Manager
displays
Yes
, indicating that it is safe to remove this component.
Replace a controller
The following replacement procedure is based on the scenario that your storage array is a two-controller
configuration. 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.
Prepare to replace controller
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.
This task describes how to prepare to replace a controller canister in a controller shelf with two controllers.
The procedure applies to the following controller shelves:
• DE2000 controller shelf
• DE4000 controller shelf
• DE6000 controller shelf
Perform this task only if your storage array has two controllers.
Step 1. Unpack the new controller canister, and set it on a flat, static-free surface. Save the packing
materials to use when shipping the failed controller canister.
Step 2. Locate the MAC address and FRU part number labels on the back of the controller canister.
MAC address: The MAC address for management port 1 (“P1”). If you used DHCP to obtain the
original controller's IP address, you will need this address to connect to the new controller.
FRU part number: This number must match the replacement part number for the currently
installed controller.
Step 3. From ThinkSystem System Manager, locate the replacement part number for the controller canister
you are replacing. When a controller has a fault and needs to be replaced, the replacement part
number is displayed in the Details area of the Recovery Guru. If you need to find this number
manually, follow these steps:
a. Select
Hardware
.
.
Hardware replacement procedures
101
Summary of Contents for DE120S
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