E-Series insufficient cache backup device capacity indicates the controller onboard mSATA backup device has likely failed a Diagnostic test causing the backup capacity to be insufficient. All volumes ...E-Series insufficient cache backup device capacity indicates the controller onboard mSATA backup device has likely failed a Diagnostic test causing the backup capacity to be insufficient. All volumes will change to write-through caching whenever the usable capacity of the persistent cache backup device is less than that of the cache memory.
