RAID

RAID Data recovery

 Spasavanje podataka sa raid-aRAID recovery begins by cloning all of the hard drives that were a part of a RAID system to working hard drives – so called clone-drives. Hard disk cloning includes copying, sector by sector, all of the data from one hard drive to another.

Cloning success is determined by type of malfunction on the hard drive, and successful cloning in most of the cases determines the success of data recovery itself.

When all drives are cloned we simulate the work of a RAID array in a way in which an original RAID server was functioning. Complexity of this simulation will depend on the complexity of the RAID array itself but also on the state of clone drives

Process of simulating the work of RAID controller includes finding the parameters of a RAID array, order of the disks, stripe size, cluster size etc.

Helpdisc uses the most advanced techniques to fix, save and rebuild the lost data:

  • From all RAID controlers and all RAID structures
  • From all types, brands and models of hard drives in RAID
  • For all causes of data loss, from simple to the most complex ones, including viruses, natural disasters, accidental deletions, system crashes, corruption of files, hardware damages…

 

We preform data recovery from the following RAID levels:raid3

Advices on how to use the RAID

  • Never replace the damaged disk with the disk that was a part of previous RAID system – always clean new disc before usage.
  • If the disk makes strange mechanical noises, turn it off immediately and call for assistance.
  • Make the fresh and precise backup before any changes of hardware or software.
  • Mark the disks and their position in RAID sequence.
  • Don’t use tools for disk recovery on damaged disks in RAID.
  • Don’t defragment the damaged disks.
  • In case of power loss while the RAID is operating, if the system fails to boot or the data is not accessible when power is restored, don’t use any software to repair the hard disks.
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raid4

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