StorNext QM1200, QS1200 or QS2400 Base System - Replacing a Controller
April 2015
Quantum Corporation
- 3 -
Figure 2 Controller Service Action LEDs
1.
Controller Service Action Allowed LED (Blue)
2.
Controller Service Action Required LED (Amber)
Pre-Work before Removing the Failed Controller
1.
Label each copper cable or fiber-optic cable that is attached to the controller so that you can reconnect each
cable correctly after the new controller is installed.
2.
Record the information from the seven-segment display on the rear of the base system.
The display flashes a sequence of codes. To find information about the displayed diagnostic codes, refer to
StorNext Q-Series Storage Install Guide
.
Use either the GUI (first bullet) or the CLI (second bullet) to take the appropriate controller offline.
—
From the Hardware pane in the Array Management Window, right-click the picture of the controller that you
want to take offline, and select
Advanced >> Place >> Offline
.
—
Run the following command.
SMcli <DNS-network-name-or-IP-address> -c “set controller [(a | b)]
availability=offline”;
If necessary, wait for the Controller Service Action Allowed LED to come on (see
). This indication might
take several minutes for a large configuration.
3.
Disconnect all of the interface cables and Ethernet cables from the failed controller.
If the storage array is running while you perform this replacement, do not disturb the second controller.
ATTENTION Potential degraded performance
–
To prevent degraded performance, do not twist, fold,
pinch, or step on the cables. Many cables have a minimum bending radius. For example, do not bend
fiber-optic cables tighter than a 5-cm (2-in.) radius. Check the specifications for your cables, and do not
bend any cable tighter than the minimum specified radius.
