Retrodata offer RAID data recovery from any RAID level. Any file system. Any operating system.
BeyondRAID by Data Robotics (DROBO). Allows different sized drives – almost like a spanned volume or JBOD (just a bunch of disks) with an element of redundancy. Drobo RAID recovery is complex and best left to specialist RAID recovery engineers, rather than the services of a data recovery company.
RAID Z (used by the Sun ZFS file system). Basically a form of RAID 5, with enhancements to make it more efficient in performance and in the way it writes data to the array.
RAID Z2 Double Parity RAID-Z by for Sun systems’ ZFS file system is the same as comparing RAID-z and RAID 5 with RAID-Z2 with RAID 6; Z2 incorporates double parity, meaning two drives can fail before data access is lost.
Drive Extender (Microsoft Windows Home Server). This is software-RAID and a mixture of both RAID 1 and JBOD (just a bunch of disks.)
IBM ServeRAID (Proprietary IBM controller that supports RAID 0, RAID 1, RAID 1E, RAID 5, RAID 5E, RAID 10, RAID 1E0 and RAID 50.)
RAID-DP (double parity RAID by NetApp). Has similarities with RAID 6, but has a more efficient method of writing data.
RAID S (proprietary variant of RAID 5 adapted by EMC Corporation for their Symmetrix storage arrays) stores volumes on individual drives. The drives are then connected in such a way that creates random parity.
RAID 5E (Enhanced RAID 5) utilises a hot-swap drive as well as all other drives to share the bandwidth across all drives. This increases performance.
RAID 5EE works on similar principles to RAID 5E.
Linux MD RAID 10 (RAID 0 with redundancy) is very similar to the nested RAID 10, but allows for the performance of RAID 0 with the redundancy of RAID 1.
Standard RAID levels
Please see here
Hybrid RAID levels
Please see here
