RAID data recovery:

RAID Arrays were developed as a form of protection from data loss and provide large amounts of highly accessible space. RAID's or "Redundant Array of Inexpensive (or Independant) Disks" were thought to solve data loss issues by writing the data across several disks. Then, if one disk was to fail or a logical volume was lost, it could be rebuilt and restored with minimal loss or downtime. One thing is certain, eventually it will fail, logical volumes will become corrupt or lost and you will need raid data recovery.

BE CAREFUL! Often any chance for raid data recovery is taken away when attempting to restore a lost volume or re-add a drive to the array. This among other things can lead to an over write of parity or volume data making it much more difficult and/or impossible to recover from.

 

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Frequently, hardware such as a damaged or bad controller card can cause a variety of RAID data recovery issues. Here is just a small list of common problems.

• Lost volume
• Broken arrays
• Physically or Logically Damaged Drives within the Array
• Missing Volume Tables
• Corrupted RAID Configurations
• Lost container
• Volume Corruption
• Multiple Disk Failure
• Controller Failure
• Server Configuration Lost
• Missing Container
• Malicious Damage
• Virus Attack
• Missing Partitions
• Lost Key information
• OS and File System Corruption
• Failed Drive(s)
• Reformat or Reinstallations

 

Here are just a few of the system types and operating systems we are able to recovery from.

• Microsoft Based Servers
  • Windows NT
  • Windows 2000
• SAN
  • Novell
  • Sun Solaris
  • Linux
• NAS

 

Common RAID types:

• RAID-0. This technique offers striping but no redundancy of data. It offers the best performance but no fault-tolerance and if a drive fails in RAID 0 only repair and reassembly of the volume will result in a recovery.

• RAID-1. This type is also known as disk mirroring and consists of at least two drives that duplicate the storage of data. This may become a problem should you experience a corruption of data. You will then have 2 copies of bad data. This is recoverable

• RAID-2. This type uses striping across disks with some disks storing error checking and correcting (ECC) information.

• RAID-3. This type uses striping and dedicates one drive to storing parity information. Should 2 drives in the system fail at once, only hard drive repair and volume restoration will result in a RAID recovery.

• RAID-4. This type uses large stripes, which means you can read records from any single drive.

• RAID-5. (Most common) This type includes a rotating parity array. This type requires at least three and usually five disks for the array but can hold more. Should 2 drives in the system fail at once only hard drive repair or volume restoration will result in a recovery

Do not hesitate to contact us anytime night or day our staff is standing by to handle any of these RAID data recovery issues.