Chapter 5: Subsystem Maintenance and Upgrading
․
DIMM Module
The DIMM module can be replaced when a
DIMM module fails or if a larger capacity
DIMM is required.
․
BBU
If the BBU has lost its ability to hold electric
charge, replace it with a certified module.
With the new BBU that comes with ASIC400
models, an EEPROM is implemented and
that system administrators will be notified by
system events when the approximate one-
year life expectancy is reached.
WARNING!
1. The BBU is hot-swappable and can be independently swapped from the
controller. However, the BBU is installed into a metal bracket on the
controller module. When the controller is removed, the BBU is also
removed.
2. It is recommended to remove the BBU before handling the controller
because once a controller is removed from chassis, BBU will discharge to
support the cache memory. If you replace a DIMM module with supplied
voltage, damage may occur.
3. If necessary, replace a DIMM
1 minute
after the BBU is removed.
5.2.2
Notes on Controller Maintenance
․
Re-using the DIMM module removed from a failed controller is
not recommended unless you have a similar RAID system to
test its integrity.
․
When replacing the controller module, you must 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 lead to permanent damage, resulting in
timely delays.
5.2.3
Controller Module Replacement Procedure
5.2.3.1
Replacing a Controller Module on S12E- R1132-
4
To replace the controller module:
Step 1.
Prepare a clean, static-free work pad or container
to
place the removed controller.
5-3
