Specifications

Falcon 24 Bay SCSI-SATA Installation and Hardware Reference Manual
1.2.6 BBU Module
Part Number:
Module (Cell Pack): IFT-9274CBT-C
The optional Li-ION BBU module, shown in Figure 1-9, can sustain 1GB of cached data
for up to 72 hours during a power failure. The use of a BBU is highly recommended in
order to ensure data integrity. If power outage occurs, the BBU supplies power to sustain
the unfinished writes in cache memory.
Figure 1-9: BBU Module, Controller Top Cover, and the Module Slot
The BBU consists of two major parts. One is the charger circuitry hidden within the
RAID controller. The other is an optional BBU module which contains several battery
cells. By default, the subsystem comes with a dummy cover on the BBU module slot. If
BBU protection is preferred, simply remove the dummy cover and install a BBU. The
BBU module is hot-swappable, meaning the BBU can be replaced while the subsystem is
running.
NOTE:
If a BBU module is added later, you need to find an appropriate time to reset the
subsystem in order for the new module to be recognized. It is therefore recommended
to install the BBU during the initial system setup and installation.
1-10
Subsystem Components