RA7000 and ESA10000 Storage Subsystems
1–26
EK–SMCPP–UG. A01
1.9
ECB SBBs
The external cache battery (ECB) SBB provides power to the RAID array
controller cache module if system power fails. The cache module in turn
provides power to the ECB during normal operation. Two ECBs mounted in each
SBB module provide support for two cache modules. Each has a power
connector, status LED, and battery disable switch (see Figure 1-15).
To check the ECB status, look at the ECB status LED (one for each cache
module) for the appropriate indication (see Figure 1-16 and Table 1-3).
Figure 1–16 External Cache Battery (ECB) SBB
