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How does battery backup unit really work to prevent data corruption?

With the write-back policy enabled on an Intel® RAID controller, the I/O performance can be improved but data can become corrupted if a system failure occurs before the data in the cache is written to the disk. Battery backup unit can ensure the data will be restored correctly when power is restored.

This applies to:
Intel® RAID Controller SRCSAS144E
Intel® RAID Controller SRCSAS18E
Intel® RAID Controller SRCSASJV
Intel® RAID Controller SRCSASRB
Intel® RAID Controller SRCSATAWB
Intel® Server Board S5000PAL
Intel® Server Board S5000PSL
Intel® Server Board S5400SF
Intel® Server System SR1560SF

Solution ID: CS-028745
Date Created: 20-Jan-2008
Last Modified: 02-May-2008
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