IBM System Storage DS3000 Programming Manual page 639

1. Start the command line interface.
2. On the command line, type this command, and press Enter. In this command, ctlr-A_IP_address is
the IP address of the of the original simplex controller.
smcli ctlr-A_IP_address -c "set storageArray
redundancyMode=duplex;"
3. Reboot the controller enclosure or the drive enclosure.
Step 3 – Installing the second controller
Attention: Possible hardware damage – To prevent electrostatic discharge damage to the enclosure, use
proper anti-static protection when handling enclosure components.
Note: For best operation, the new controller must have a part number identical to the existing controller,
or the new controller must be a certified substitute. The part number is on a label on the controller. To
provide full functionality in dual-controller configurations, make sure that both controllers in the
controller enclosure or the drive enclosure have the same memory capacity. Although you can install two
controllers of different memories in a controller enclosure or a drive enclosure, the mismatch disables
some functions, such as cache mirroring.
1. Put on anti-static protection.
Attention: Possible damage to the controller – Do not remove the electrostatic protection until you
have finished installing the controller and you have connected the host cables and the drive enclosure
cables.
2. Unpack the new controller.
Attention: Possible damage to the controller – Bumping the controller against another surface might
damage the data connectors on the rear of the controller. Use caution when handling the controller.
3. Remove the blank controller CRU/FRU from the enclosure by releasing the handle, and pulling the
blank controller CRU/FRU out of the enclosure.
4. Slide the new controller CRU/FRU into the empty slot by pushing the controller CRU/FRU until it
snaps into place, and locking the handle into the closed position.
Step 4 – Connecting the host cables
The steps in this procedure describe how to attach Fibre Channel host cables. The steps for connecting
other types of host cables are similar, but they do not require the installation of Small Form-factor
Pluggable (SFP) transceivers.
1. If there is a black plastic plug in the host port, remove it.
2. Install an SFP transceiver into the controller by pushing the SFP transceiver into the host port until it
snaps into place.
Attention: Possible degraded performance – To prevent degraded performance, do not twist, fold,
pinch, or step on fiber-optic cables. Do not bend fiber-optic cables tighter than a 5-cm (2-in.) radius.
3. Plug one end of the fiber-optic cable into the SFP transceiver in the host port.
4. Plug the other end of the fiber-optic cable into one of the HBAs in the host (direct topology) or into a
switch (switch topology).
5. Attach a label to each end of the cable by using this scheme. A label is very important if you need to
disconnect the cables later to service a controller.
— The host name and the host bus adapter (HBA) port (if direct topology)
— The switch name and port (if switch topology)
— The controller ID (for example, controller A)
— The host channel ID (for example, host channel 1)Example label abbreviation – Assume that a
cable is connected between port 1 in HBA 1 of a host named Engineering and host channel 1 of
controller A. A label abbreviation could be as follows:
Appendix D. Simplex-to-Duplex Conversion
D-3