APC RAID Subsystem SCSI-SATA II Specifications Page 69

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Falcon 24 Bay SCSI-SATA Installation and Hardware Reference Manual
5.2.3 Removing the Controller Module
WARNING!
1. Consult with your resellers or distributors technical support department
to confirm which memory module can be installed into the controller
module.
2. The installed BBU and controller module must be removed prior to
installing new memory modules. Do this with care. Sensitive components
can be damaged during the process.
3. The BBU is hot-swappable and can be independently swapped from the
controller. However, as a safety precaution and in case your memory still
holds cached data, it is recommended to remove the BBU before handling
the DDR RAM module. If the BBU is supplying power to the memory when
the DDR module is being removed, damage will occur!
To remove the controller module:
Step 1. Prepare a clean, static-free work pad on which to place the controller
that will be removed from the chassis.
Step 2. Since this is a single-controller model, stop host I/Os and power down
the subsystem following the procedure listed in Chapter 4.
Step 3. Remove the BBU module if one has been installed. Loosen the BBU
module’s spring screw and then simply retrieve it from the chassis.
Figure 5-1: Removing the BBU Module
5-4 Replacing Controller Module Components
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