Technical data

Chapter 2: Upgrading Trays in the Storage Array 57
Reinstalling the
Controller Canister in
the E5400
Controller-Drive Tray
1. Reinstall the top covers on both controller canisters by sliding them forward until
the top cover latch buttons click.
2. Slide each controller canister all the way into the controller-drive tray. Rotate the
release levers towards the center of the controller canister to lock that component
into place.
3. Reconnect the following cables to the appropriate ports on both controller
canisters.
— Ethernet cables
— Host interface cables
— Drive interface cables
4. Go to "Turning On Power to the Controller Canisters in the E5400
Controller-Drive Tray" on page 57.
Turning On Power to
the Controller
Canisters in the E5400
Controller-Drive Tray
1. Turn on the Power switches on both of the power-fan canisters.
Controller B comes up in Write-Through mode. Controller A comes up in an
Offline state.
2. Use one of the following options to bring controller A online.
3. Look at the LEDs on both controller canisters to make sure that the controllers
are booting correctly.
The seven-segment display shows the sequence OS+ Sd+ blank- to indicate
that the controller is performing Start-of-day (SOD) processing. After the
controller successfully completes rebooting, the seven-segment display shows the
tray ID matching the seven-segment display on the second controller. After this
time, you can discover the controllers by using the storage management software.
SANtricity ES From the Hardware pane in the Array Management
Window, right-click the picture of the controller, and
select Advanced >> Place >> Online.
Command line interface Enter the following command on the command line:
smCLI
<DNS-network-name-or-IP-address> -c
“set controller [a]
availability=online”;
In this command,
<DNS-network-name-or-IP-address> is
the applicable address.