You have already answered your query. Adding to that every disk has a MBTF depending on which it fails over a period time to which there are other several factors which adds to frequent disk failures. - High I/Os then a Physical Disk can handle. - Soft Media Errors and Too many time outs - Physical Defect [I am sure not your case but it happens sometimes]  What can you do? 1. Upgrade the FLARE to latest [if not already] 2. Update the Disk Enclosure and Disk Firmware if its just due to soft errors on the drive(s) which is causing this. 3. Take a Complete back up of the Data/LUNs 4. Recreate them and after that run a file system check to verify the consistency.
Hey folks ,             Need some insight into drive failures  , we are seeing an increased amount of failed drives on our CX3-80s over the last 6 months . Anything I should be concerned about here ?   I know drive failures are inévitable and can occur due to head crash , bad sectors or internal circuits going bad . Is there anything that can be done proactively to reduce the amount of drive failures ?   regards AE 
Frequent Drive failures