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

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Virtual disk write cache policies

The write cache policy of a virtual disk determines how the controller handles writes to the virtual disk. Write-back and write-through are the two write cache policies that can be set on virtual disks individually.

All RAID volumes are presented as write-through to the operating system independent of the actual write cache policy of the virtual disk. The Shared PERC 8 cards manage data in the cache independently of the operating system or any applications.

  • NOTE: Use the Dell Chassis Management Controller (CMC) to view and manage virtual disk cache settings.

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