Rorke Data A16F-R2431 Galaxy Raid, Руководство по установке и аппаратным средствам, Страница: 75 / 110

Chapter 5: Subsystem Maintenance and Upgrading
Replacing
a Controller Module 5-3
5.2 Replacing a Controller Module
IMPORTANT!
The docking connectors on the controller module are very delicate and
the connector pins can be broken easily. Do not touch the connector pins.
Visually examine each connector pin before inserting the controller
module into the subsystem. A broken pin may damage the subsystem
backplane board and cause a subsequent system crash.
5.2.1 Considerations
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The controller module contains a DIMM module. It is not
recommended to re-use the DIMM module extracted from a failed
controller unless you have a similar RAID subsystem that can be used
to test a used module. You can contact your vendor for sending the
failed controller in for repair.
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Only a controller module within a dual-controller subsystem can be
replaced online.
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When replacing the controller module, always remember that the
controller board is one of the most sensitive components in the
subsystem. All previously stipulated safety precautions (see Section
2.3 ) must be strictly adhered to. Failure to adhere to these precautions
can result in permanent damage to the controller board, resulting in
lengthy delays.
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Operating in the dual-active mode and one (1) controller fails, a
transparent failover to the partner controller will take place. This
ensures continuous operation of the RAID subsystem. Once the failed
controller is replaced, a transparent failback will ensure that the I/O
workload is once again distributed between the two controllers.
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The BBU module is installed in a module slot located in the upper
center of the controller module. When the controller module is removed
from the subsystem, the BBU module is also removed. Make sure the
BBU module is installed properly into the module slot before the
controller is reinstalled into the subsystem.
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Each 4Gb/s Fibre Channel host port comes with a plastic dust plug to
prevent contaminants and to regulate airflow. Leave the dust plugs in
place until you are ready to insert a SFP module. When host ports are
populated by FC transceivers, keep the dust plugs in case configuration
changes may occur in the future.