Meridian Data SecurStor iSCSI to SATA-II RAID Subsystem 16i Manuel D’Utilisation
Chapter 5: Subsystem Maintenance and Upgrading
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5.2.2 Notes on Controller Module Maintenance
The controller module contains a DIMM module for cache buffer. When replacing the
controller module, the DIMM module can be removed and used on the replacement
controller if they are known to be good.
When replacing the controller module, you must remember that the controller board is
one of the most sensitive components in the EMD SS16I subsystem. All previously
stipulated safety precautions (see Chapter 2) must be strictly adhered to. Failure to
adhere to these precautions can result in permanent damage, resulting in timely delays.
For your own safety and that of the subsystem, make sure that no power is being
supplied to the system prior to replacing the controller module.
5.2.3 Removing the Controller Module
To remove the controller module:
Step 1.
Prepare a clean, static-free work pad or container into which to
place the controller that will be removed from the chassis.
Step 2.
Make sure there is no data access to the subsystem to avoid losing
data. Stop all I/O accesses to the subsystem and make sure all cached
writes have been distributed to disk drives.
Step 3.
Power off the subsystem. If possible, power off the subsystem in the
way described in Chapter 4. Be sure to flush all cached data before
powering off the subsystem. If it is not possible to do this turn off
both PSU modules and disconnect the power cords.
Step 4.
Disconnect all cables that are connected to the controller module you
wish to replace. These include the Ethernet cables connected to the
network, and any cable connected to the RS-232C audio jack
connector.
Step 5.
Remove the BBU module if one has been installed. Loosen the BBU
module’s retention screws and then retrieve it from the chassis.