Raid Recovery

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Raid Recovery
Raid Recovery
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CONTENT

• Introduction
• Levels of Raid
• Reasons of Raid Failure
• Steps for Recovery
• Conclusion

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About RAID

• RAID - Redundant Array of Independent Disks It
  consist of multiple disk for the greater storage
  and performances in long run.
• Performance of Raid depends upon different levels
  for e.g. Raid1 perform different from Raid3 and
  Raid 3 performs differently as compared to raid5
  and so on.

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Levels of Raid

• Raid 0
• It consist of minimum two disk.
• No parity calculation is involved.
• Input/output performance increased by spreading
  Input/output load across the drives and channels.

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Raid 1

• It consists of exactly two drives.
• Fault tolerance is very good.
• Excellent redundancy
• No rebuild is necessary in case of a disk
  failure. Transfer rate per block is equal to that
  of a single disk

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Raid 3

• It consist of minimum 4 drives.
• Single dedicated parity disk. Disk
• failure has an insignificant
• impact on throughput.
• Preferred for reading video files.

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Raid 5

• It is the most popular level of
• technology. Minimum 3 disk required.
• It provides better performance than mirroring and
  fault tolerance.
• Highest read data transaction rate.

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Reasons of Raid Failure

• Raid data recovery is important in case of
  deletion or catastrophic failure. Catastrophic
  failure can be a human error and viruses in
  computer
• Power Outages is a common occurrence. Power
  failure leads to terminal loss of data.
• Raid failure can either in the form of hardware
  failure.

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In Order To Avoid Worse Stage In Raid Failure
Following Steps Should Be Taken

• Remove the entire disks from the raid and label
  the cables, port and disks for further reassemble
  of raid.
• Create an image of the RAID member disks, to
  create an image, connect the disk to a non-RAID
  disk controller, such as a hard drive dock, a
  normal hard drive bay on your computer.
• Take a blank drive as a backup to accommodate the
  data you want to recover. 
• A professional data recovery tool is always
  beneficial to build up raid virtually.
• Software sometimes are not able to recover
  complete data in that case professional services
  are always up to the mark. The success rate is
  more in case of Raid recovery services. You can
  acquire Raid Data Recovery services
  http//www.stellarinfo.co.in/services/raid-data-re
  covery.php

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Conclusion
Raid is a complex device in order to secure it
necessary steps should be taken for the
recovery.   The chances of successful recovery
are more in services that of software. If we take
effective steps we will be able to build Raid
again.
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• Thank You