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RAID5 recovery

Summary

RAID5 is a redundant array usually consisting of three disks. Due to redundancy, it is possible to recover RAID5 data even with one array member disk missing; however, if you deal with multiple disk failure, first you need to image/repair disk(s) until you get at least (N-1) disks available.

Note that ZAR RAID recovery software is capable of determining lack of the disks and add a missing disk automatically.

Step 1 - Get, install, and start ZAR RAID recovery software

Download and install ZAR RAID recovery software just like you do with any regular program. When you run it, ZAR displays the window like the one below:

start RAID5 recovery

  1. Click "RAID Recovery"
Step 2 - Select array members and RAID types

Select disks for RAID5 recovery

  1. Select all the disks that were members of the RAID5. The order of disks is reconstructed automatically, you cannot specify it here.
  2. Select the RAID 5 layout (also called "RAID level").
  3. Click "Next" to start the RAID5 reconstruction.
Step 3 – RAID 5 layout reconstruction

RAID5 recovery progress

This part is fully automatic. It is likely for a RAID 5 recovery to complete before the progress bar reaches 100%. In an extreme case, the RAID 5 recovery may be done in under 10 minutes. This is the expected behavior.

Step 4 - Select the partition on the RAID5

Select RAID5 partition for recovery

  1. Select a RAID5 partition you need to recover. Use More functions... -> Scan for missing partitions to run a partition recovery if required.
  2. Click "Next"
Step 5 - Filesystem reconstruction

RAID5 filesystem recovery

This part is fully automatic.

Step 6 - Mark files to copy

Mark RAID5 data for recovery

  1. Mark files and folders to recover by clicking their corresponding checkboxes
  2. Click "Next"
Step 7 - Copy the files

Copy RAID5 data

  1. Enter the name of the folder for the recovered files
  2. Click "Start copying" to start file retrieval
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