Technical Product Specification

Intel® RAID Smart Battery AXXRSBBU3 Technical Product Specification Overview

 Software: This monitors and informs the user of any issues or actions for the Intel

Smart Battery AXXRSBBU3. Monitoring is accomplished through the Intel

RAID BIOS

Console 2, Intel

RAID Web Console 2, or Intel

RAID Command Line Tool 2 utilities.

Figure 1. Intel

RAID Smart Battery AXXRSBBU3

The battery pack charges automatically and communicates battery status information, such as

voltage, temperature, and current to the host computer system.

Because it is faster to write data to the RAID adapter’s cache memory than it is to write it

directly to a storage device, data is first written to the cache memory. These write operations are

completed quickly at the software application level. The RAID controller/module then writes the

cached data to the storage device when system activity is low or when the cache is full.

This method of writing data carries a risk. Cached data on the RAID controller/module can be

lost if the AC power fails before it is written to the storage device. The Smart Battery mitigates

this risk by providing battery power to the RAID controller/module if AC power is lost.

The Smart Battery monitors the voltage level of the DRAM (Dynamic Random Access Memory)

modules on the RAID controller/module. If the voltage drops below a predefined level, the Smart

Battery switches the memory power source from the RAID controller/module to the battery pack.

The battery pack provides power for the memory until the voltage returns to an acceptable level,

at which time the Smart Battery circuit board switches the power source back to the RAID

controller/module. Cached data is then written to the storage devices with no loss of data. The

Smart Battery provides additional fault tolerance when used with a UPS.

Revision 1.6

Intel order number D84273-006