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

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Recovering cache data

If a system power loss or improper system shutdown has occurred:
  1. Ensure all online physical disks are still connected.
  2. Restore the system power.
  3. Boot the system. Virtual disks are automatically imported and preserved cache (if any) will be flushed to the physical disks of appropriate virtual disks. If preserved cache is still present, there could be situations preventing the flushing of preserved cache data.
    • NOTE: For more information on recovering the cache data, see the Dell Chassis Management Controller for Dell PowerEdge VRTX User’s Guide at dell.com/poweredgemanuals.
    • NOTE: If there is preserved cache in Shared PERC 8, you can clear the preserved cache in the CMC. If there is no preserved cache, this option is not displayed in CMC which indicates that the preserved cache data is recovered and written to the physical disks successfully.
    • NOTE: If preserved cache is discarded, preserved cache data is not written to the physical disks. Ensure that the preserved cache data is not critical before discarding.

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