RAID 50 Data Recovery Services
Standard RAID (redundant array of independent disks) levels comprise a basic set of RAID configurations that employ either striping, mirroring, or parity to create large reliable data stores from multiple general-purpose computer hard disk drives (HDDs).
RAID 50 (also known as RAID 5+0) is a nested or “hybrid” RAID configuration that provides the distributed parity of RAID 5 with the straight block-level striping of RAID 0. As a RAID 0 array striped across RAID 5 elements, minimal RAID 50 configuration requires six drives.
RAID 50 offers better write performance, increased data protection and faster rebuilds than a standard RAID 5. Performance does not degrade as much as in a RAID 5 array because a single failure only affects one array. One disadvantage to RAID 50 is that it needs a sophisticated controller.
Up to four drive failures in a RAID 50 configuration can be overcome as long as each failed drive occurs in a different RAID 5 array. Otherwise, data recovery is the only option to avoid permanent loss of data.
RAID 50 Failures
While the RAID 50 configuration can provide protection against and recovery from hardware defects or defective sectors/read errors (hard errors), it does not provide any protection against data loss due to catastrophic failures (fire, water), multiple disc failures, user error, software malfunction, or malware infection. For valuable data, RAID is only one building block of a larger data loss prevention and recovery scheme – it cannot replace a backup plan.