Chapter 5: Subsystem Maintenance and Upgrading
Figure 5-9: Removing a DIMM Module on S12F-G1433
Step 4.
Insert the new DDR RAM DIMM module into the DIMM
socket.
Align the new module with the DIMM socket and
note how the module is keyed. Firmly press the DIMM
module into the socket, making sure the module is
completely seated in the socket. The ejector tabs on
each end of the socket will snap into proper positions.
Step 5.
Install the controller module
(See
Section 5.2.2.1,
Step 5-8 or Section 5.2.2.2, Step 5-7
)
and then the
BBU module
(See
Section 5.4.2, Step 2-3
)
back to their
original locations.
5.4
Replacing a Faulty BBU
5.4.1 Notes on BBU Maintenance
S12F-R1432 comes with two (2) BBUs. For the single-controller
S12F-G1433, the BBU is an optional item and can be separately
purchased from your subsystem vendor. The BBU can sustain cache
memory in the event of a power failure or in the extremely unlikely
event of failing both PSUs. The BBU provides additional data security
and helps minimize the chance of losing data during power outages.
A BBU consists of a metal bracket, battery cell pack, and a PCB
board that connects to the controller module. The BBU is secured to
the module bay in the RAID controller canister. If a BBU fails, it should
be replaced as soon as possible.
5.4.2 BBU Fault Conditions
A BBU failure can result from the following:
5-9
