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<title>write-cache mode -- Write-back (glossary)</title>

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<h2>write-cache mode -- Write-back</h2>
<p>A setting of the write-cache mode. When the write-cache mode is set to write
  back and the operating system sends data to the controller, the controller sends
  a confirmation back to the operating system before actually writing the data
  to a storage device. This increases performance, but, if a battery-backup cache
  is not used, increases the risk of data loss in the event of a power failure.
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