PERC S100/S300 driver older than 1.0.0.0086 should be updated to prevent a potential critical data consistency check problem

 
Issue:

When using a driver older than 1.0.0.0086 on the S100/S300 PERC RAID controller, running a Consistency Check operation may encounter a critical data consistency error under certain condidtions.

 
Additional Information:

While performing a Consistency Check on an S100/S300 PERC RAID controller, if more than 32 bad blocks are encountered it is possible for incorrect parity information to be written.  When the 33rd bad block is encountered, the hard drive will be marked as FAILED and the Consistency Check operation will erroneously calculate parity and write this incorrect parity.

All of the following conditions MUST be met for this issue to occur:

• Software RAID using an S100/S300 PERC RAID controller
• RAID 5 array using 3 or more hard drives
• Consistency Check in progress (manual or scheduled operation from OMSS)
• The 33rd bad block is found during the Consistency Check operation

NOTE:  If more than 32 bad blocks are encountered during any other RAID functions (rebuild for example), this issue will NOT occur.

 
Solution:

Update the S100/S300 to the latest driver and firmware versions available.  Minimum recommended version for this issue is 1.0.0.0086.