LOGICAL DRIVE BAD BLOCK MANAGEMENT OF REDUNDANT ARRAY OF INDEPENDENT DISKS

摘要

Methods and systems for bad data block management of redundant array of independent disks (RAID) are disclosed. In one embodiment, a method for managing a bad data block for a RAID includes filling a first logical block address (LBA) of a first disk having a media error using signature data, filling a second LBA of a second disk offlined from the RAID using the signature data, wherein the second LBA and the first LBA are on a same stripe of the RAID, storing the first LBA and the second LBA to a table in a disk data format (DDF) area associated with the first disk and the second disk, and computing and storing parity values for the stripe of the RAID associated with the first LBA and the second LBA based on data across the stripe.