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3.
Remove the cover and save it for future use.
To install a cover on a controller, complete the following steps:
1. Read the safety information that begins on page xiii and “Best practices
2. Align the cover on the controller and slide it toward the front of the controller to
install it.
Installing a controller
Use this procedure to install a second controller. The second controller is controller
B. If the storage subsystem contains only one controller, that controller is controller
A.
Attention:
Make sure that the two controllers have the same host port adapter,
DIMM size, and options. An incompatible controller will be placed in a lockout state
by the other controller.
To install a controller in the storage subsystem, complete the following steps:
1. Read the safety information that begins on page xiii and “Best practices
2. Install new dual-controller NVSRAM firmware on controller A. See
“Downloading controller or NVSRAM” in the
DS Storage Manager 10
Installation and Host Support Guide
for information about how to download the
NVSRAM firmware.
Note:
Obtain the latest dual-controller NVSRAM firmware from
http://www.ibm.com/servers/storage/support/disk/.
3. Start the command-line interface; then, enter the following command to change
controller A from simplex (single-controller) mode to duplex (dual-controller)
mode:
Smcli ctlr_A_IP_address -c "set storageSubsystem redundancyMode=duplex;"
4. Shut down the storage subsystem, and then start it again (see “Turning on the
storage subsystem” on page 68). If controller A was successfully converted to
duplex mode, the subsystem reports an
alternate controller missing
error
message. If the error message is not reported, reinstall the new dual-controller
NVSRAM firmware on controller A and repeat steps 3 through 4.
5. Unpack the new controller. Save all packing materials in case you have to
return a controller.
6. Make sure that both controllers have the same host port adapter, DIMM size,
and options.
7. If controller A contains an optional host port adapter, install an identical
optional host port adapter in the new controller. See “Installing an optional host
port adapter” on page 101 for instructions.
8. Remove the controller filler panel from the bay:
a. Open the two release levers. The filler panel moves out of the bay
approximately 0.6 cm (0.25 inch).
b. Pull the filler panel out of the bay.
c. Place the filler panel in a safe place for future use.
9. Install the new controller.
Chapter 5. Replacing components
95
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