Installing The Lsiibbu01 - LSI iBBU01 User Manual

2.1

Installing the LSIiBBU01

2-2
charged, you can change the Write Policy to write-back to take
advantage of the performance improvements of data caching.
The maximum operating temperature (ambient) for the battery packs is
40 °C. See Chapter 4, "Battery Backup Unit Specifications,"
technical specifications for the iBBUs.
Note: The temperature of the battery packs are generally 15–20
degrees higher than the ambient temperature during fast
charge. Therefore, to complete fast charge cycle, ambient
temperature should be less than 40 °C. If the ambient
temperature exceeds 40 °C, the fast charge cycle will
terminate prematurely, thus preventing the battery pack
from reaching a fully charged state.
The LSIiBBU01 Intelligent BBU features Nickel Metal Hydride (NiMH)
battery cell technology and is offered with a 12-inch cable to connect the
unit remotely to the MegaRAID 1078-based SAS 8888ELP RAID
controller. Battery charging and recharging take place automatically.
Figure 2.1 shows top and bottom views of the iBBU01. (The "top" side is
the side you can see after you install the iBBU01 on the motherboard or
server chassis.) Note the J2 connector and the holes for the screws that
attach the iBBU01 to the chassis.
Installing the Battery Backup Units
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