Installing A Controller; Removing The Cover - IBM DS3500 Installation, User's, And Maintenance Manual

1. Read the safety information that begins on page "Safety" on page xi and "Best practices guidelines"
on page 1-7.
2. Press on the two release buttons and slide the cover toward the rear of the controller.
Figure 5-2. Removing the cover
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 "Safety" on page xi and "Best practices guidelines"
on page 1-7.
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 "Safety" on page xi and "Best practices guidelines"
on page 1-7.
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 4-2). 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.
Release
buttons
Chapter 5. Replacing components
5-3