AMCC 3ware 9000 Series, Руководство пользователя

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Introducing the 3ware 9000 Series Controller
16 3ware 9000 Series Serial ATA RAID Controller User Guide
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Scheduled Background Tasks. Initialize, rebuild, verify, and self-test
tasks can all be run in the background, at scheduled times. This lets you
choose a time for these tasks to be run when it will be least disruptive to
your system. You can also define the rate at which background tasks are
performed, specifying whether I/O tasks should be given more processing
time, or background rebuild and verify tasks should be given more
processing time.
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Write Cache
. Write cache can be enabled or disabled using 3BM, 3DM2
and CLI. When write cache is enabled, data will be stored in system
cache, 3ware controller cache, and drive cache before the data is
committed to disk. This allows the system to process multiple write
commands at the same time, thus improving performance. However when
data is stored in cache, it could be lost if a power failure occurred. With a
Battery Backup Unit (BBU) installed, the cache stored on the 3ware
controller can be restored. For more information, see “Updating the 3ware
Driver Under Windows XP” on page 146.