Quantum QXS G2 Series, Hardware Installation And Maintenance Manual

Page: 192 / 246

180 QXS G2 Hardware Installation and Maintenance Guide
You may need to replace a controller module or an expansion IOM when:
• The Fault LED is illuminated.
• Health status reporting in the disk management utility (GUI) indicates a problem with the module.
• Events in the disk management utility (GUI) indicate a problem with the module.
• Troubleshooting indicates a problem with the module.
TIP: The illustrations show a RAID controller replacement within the top slot (A) as you view the
chassis rear panel. The replacement of a RAID controller or an expansion IOM is the same process. To
replace a RAID controller or an expansion IOM in the bottom slot (B), you would first rotate the
module 180º about its longitudinal axis, so that it properly aligns with its connectors on the back of
the midplane.
Before You Begin
Removing a RAID controller or expansion IOM from an operational chassis significantly changes air
flow within the chassis.
• Openings must be populated for the chassis to cool properly.
• Leave modules in the chassis until ready to install a replacement.
• If replacing both RAID controllers in a dual-controller chassis, use the disk management utility
(GUI) to record configuration settings before installing the new RAID controllers.
• See Removing a 2U RAID Controller or an Expansion IOM on page 183, and Installing a 2U RAID
Controller or an Expansion IOM on page 184 for instructions on installing an additional controller
module.
CAUTION: When replacing a controller module, ensure that less than 10 seconds elapse between
inserting it into a slot and fully latching it in place. Not doing so might cause the controller to fail. If
it is not latched within 10 seconds, remove the controller module from the slot, and repeat the
process.
When two controller modules are installed in the chassis, they must be of the same model type.
When replacing both controller modules in an operational chassis, follow these guidelines:
1 Replace one controller as described in these instructions.
2 Wait 30 minutes: this pause ensures that the controller and its ownership of disk groups has
sufficient time to stabilize. See also Verifying Component Operation on page 185.
3 Check the system status and event logs to verify that the system is stable.
4 Replace the partner controller as described in these instructions.
Configuring Partner Firmware Update
In a dual-controller system in which partner firmware update (PFU) is enabled, when you update
firmware on one controller, the system automatically updates the partner controller. Disable partner
firmware update
only
if requested by a service technician.
Use the disk management utility (GUI) or CLI to change the PFU setting.
IMPORTANT: See the “Updating firmware” topic within the
QXS G2 Disk Management Utility User
Guide
before performing a firmware update.