Dell PowerEdge RAID Controller 9 User’s Guide H330, H730, and H830

Dirty cache data error message

Error Message:: The following virtual disks are missing: (x). If you proceed (or load the configuration utility), these virtual disks will be removed from your configuration. If you wish to use them at a later time, they will have to be imported. If you believe these virtual disks should be present, please power off your system and check your cables to ensure all disks are present. Press any key to continue, or 'C' to load the configuration utility. The cache contains dirty data, but some virtual disks are missing or will go offline, so the cached data cannot be written to disk. If this is an unexpected error, then please power off your system and check your cables to ensure all disks are present. If you continue, the data in cache will be permanently discarded. Press 'X' to acknowledge and permanently destroy the cached data.
Probable Cause:: The controller preserves the dirty cache from a virtual disk if the disk becomes offline or is deleted because of missing physical disks. This message indicates that some configured disks were removed. If the disks were not removed, they are no longer accessible. The SAS cables for your system might be improperly connected.
Corrective Action:: Check the cable connections and fix any problems. Restart the system. Use the <Ctrl> <R> utility to import the virtual disk or discard the preserved cache. For the steps to manage preserved cache, see Managing The Preserved Cache .