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Dell Shared PowerEdge RAID Controller (PERC) 8 For Dell PowerEdge VRTX Systems User’s Guide

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Write-through

In write-through caching, the controller sends a data transfer completion signal to the host system when the disk subsystem has received all the data in a transaction.
  • NOTE: Most configurations and workloads experience some reduction in performance when configured with Write-Through cache, as compared to Write-Back cache.

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