Raid 3 and Raid 4 Data Recovery by Data Recovery Labs
Data Recovery Labs is the leader in the IT industry's Raid Data Recovery market. Providing in house data recovery services for all Redundant Array of Independent Drive (RAID) configurations, NAS, SAN and multi disk server configurations for all operating systems and storage media.
Raid 3 uses byte level striping with parity information stored on a dedicated disk. RAID 3 has very high read and write data transfer rates and single disk failures do not impact throughput significantly. RAID 3 stripes data blocks and stores the striped information in the exact same location on the individual disks that make up the array - so parallel I/O is not possible as data requests require seeks on all disks simultaneously to the same position.
RAID 3 is excellent for media applications such as image editing, digital pre-press and live streaming. The total capacity of a RAID 3 array is sum(N-1) and requires a minimum of three disks to implement.
Raid 4 algorithm is similar to RAID 3 except that striping is done at the block rather than byte level. This has the advantage of blocks requests being serviced by a single disk if the controller supports that functionality. With single disk block request serving, multiple block requests may be services simultaneously in parallel so long as the individual blocks reside on separate disks.
The total capacity of a RAID 4 array is sum(N-1) and requires a minimum of three disks to implement.
Raid Data Recovery Labs storage engineers have extensive experience with RAID 3 and Raid 4 data recovery. Raid Data Recovery Labs has developed custom tools and techniques to successfully perform RAID 3 and Raid 4 data recovery. Constant development of our software and hardware insures that we have the very latest techniques and technology to produce the best recoveries possible.
For more information about our raid data recovery service please call us toll free at 866-823-0333
Typical RAID failure background:
- RAID array/controller failure
- Server registry configuration lost
- Intermittent drive failure resulting in configuration corruption
- Accidental reconfiguration of RAID drives
- Multiple drive failure
- Accidental replacement of media components
- If a drive is making unusual mechanical noises, turn it off immediately and contact a data recovery specialist
- Do not replace a failed drive with a drive that was part of a another RAID system
- Zero out the replacement drive before using
- Label the drives with their position in a RAID array
- Do not run volume repair utilities or defragmenter utilities on suspected bad drives