Chapter 1: About The Intel; Raid Smart Battery Axxrsbbu8 - Intel AXXRSBBU8 User Manual

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About the Intel
AXXRSBBU8
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Intel RAID (Redundant Array of Inexpensive Disks) Controllers and Intel
RAID Modules provide reliability, high performance, and fault-tolerant disk subsystem
management. A complete fault-tolerant strategy requires protection of all data, including
the unwritten cached data in the RAM cache. If power is lost, the data in the RAM cache
is lost. To avoid data loss, a battery can be added to supply power to the RAID RAM
during an AC power outage or if the AC power cord is removed.
A battery backup unit (BBU) protects the integrity of the cached data on Intel
Controllers by providing backup power if there is a complete AC power failure or a brief
power outage. The Intel
alternative to using an uninterruptible power supply (UPS) or it can act as a second level
of fault tolerance when used with a UPS.
The cache memory available on Intel
performance. Writing data to the controller's cache memory is much faster than writing it
to a storage device. Write operations appear to complete very quickly at the software
application level. The Intel
when system activity is low or when the cache is getting full. The risk of using write-back
cache is that the cached data can be lost if the AC power fails before it is written to the
storage device. This risk factor is eliminated when the Intel
BBU installed.
The Intel
modules installed on the Intel
level, the battery backup module switches the memory power source from the controller to
the battery pack attached to the Intel
voltage level stays below the predefined value, the battery backup module provides power
for memory. When the voltage level returns to an acceptable level, the module switches
the power source back to the Intel
devices are completed without losing any data.
The battery backup module has built-in functionality to charge the battery pack
automatically and to communicate battery status information such as voltage,
temperature, and current to the host computer system.
The Intel
lithium-ion (Li-Ion) battery technology. It is compatible with a backup auxiliary power
source. The battery is charged automatically.
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Intel RAID Smart Battery AXXRSBBU8 User's Guide
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RAID Smart Battery Backup Unit provides an inexpensive
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RAID Controller writes the cached data to the storage device
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RAID Smart Battery Backup Unit monitors the voltage level of the DRAM
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RAID Smart Battery AXXRSBBU8 is a smart battery backup module and uses
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RAID Smart Battery
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RAID controllers can improve the overall system
RAID Controller. If the voltage drops below a predefined
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RAID Smart Battery Backup Unit. As long as the
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RAID Controller, and all pending writes to storage
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Integrated
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RAID
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RAID Controller has a
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