Recovering and Clearing Punctured Block Entries

You can recover and clear the punctured block area of a virtual drive.

ATTENTION  This operation removes any data stored on the physical drives. Back up the good data on the drives before making any changes to the configuration.

When a Patrol Read or a Rebuild operation encounters a media error on the source drive, it punctures a block on the target drive to prevent the use of the data with the invalid parity. Any subsequent read operation to the punctured block completes but with an error. Consequently, the puncturing of a block prevents any invalid parity generation later while using this block.

To recover or clear the punctured block area of a virtual drive, run a Slow (or Full) Initialization to zero out and regenerate new parity causing all bad block entries to be removed from the bad block table.

To run a Slow (or Full) Initialization, see Selecting Virtual Drive Settings.