5.8.1. Building RAID When Parameters are Known

To build RAID using Stellar Data Recovery, you must preferably know the disk order, start sector of RAID in each disk, stripe/block size,  parity repetition/delay, and parity order. Multiple possible RAIDs are constructed according to the combination of parameter options that you provide. User has to choose from any one of them. After the RAID is rebuilt, you can perform scanning and recovery operations on the RAID volumes.

To build RAID when parameters are known:

1. Run Stellar Data Recovery.

2. From the side panel, under Other Recovery Options, Select  RAID Recovery option.

   

3. Click Next.

4. The RAID Reconstruction window is displayed. All the RAID drives and a missing drive are shown in ‘Move disks to reconstruct RAID‘ section.

   

5. In the ‘Move disks to reconstruct RAID‘ section, click on a RAID hard disk and then click  Repeat this till all the RAID disks are shown in the Set the disk order as per RAID config section.

6. In the Set the disk order as per RAID config‘ Section Move hard drives up/down for disk order, click on a hard disk and then click  or   to change its order. Repeat this till all the drives are in the correct order. Double Click the block under RAID Start Sector to type the starting sector.

7. Select the RAID parameters: Choose between Auto determine RAID parameters and Manually select RAID parameters.

i. Auto determine RAID parameters: Auto-determining RAID parameters automatically identifies and configures the optimal RAID settings, ensuring quick recovery. It successfully rebuilds the RAID in most cases, minimizing data loss and manual intervention. If any of the RAID parameters are unknown, the user can select the "Auto-detect RAID parameters" option in the recovery window. Click "Auto-determine RAID parameters" option to learn how to use it.

ii. Manually select RAID parameters: Manually selecting RAID parameters allows users to define settings like Select start sectors, stripe Size/ Block size, Parity Order/ Roatation, and Parity Repetition/Delay or when automatic detection fails.

To choose parameters manually, select following parameters:

a. Expand the  Select Start Sector icon to view and choose from available start sectors. You can then select one or more probable start sectors for the reconstruction process. Click the Add button to manually enter a start sector if it's not listed, with a maximum of 32 entries allowed.

b. Expand the  Stripe/Block Size to view and select the desired stripe/block size. You can choose one or more block sizes as needed.

c. Expand the  Select Parity Order/Rotation icon.

• Select one or more parity orders by selecting the boxes from the four available options:

  • Left Synchronous (Backward Dynamic)

  • Left Asynchronous (Backward)

  • Right Synchronous (Forward Dynamic)

  • Right Asynchronous (Forward)

 

d. Expand the  Select Parity Repetition/Delay icon to choose up to a maximum of 32 entries from the dropdown menu.

 

8. Click . A single RAID is shown. Select it and click the Show Volume List button to continue recovery. The found volume and the RAID are shown under the RAID Recovery button on the main screen.

   

9. If Stellar Data Recovery is not able to build a RAID and no volume is found, select physical disk and click Scan to search the lost partition.

   

10. Click the Reconstruct RAID button to perform construction from once again, or click Load Constructed RAID button to select another constructed RAID from the list of probable RAIDs.

 

Related link:

Knowledge Base Article "How to Recover Data from Lost or Deleted RAID 0, 5 and 6 Volumes?"

https://www.stellarinfo.com/support/kb/index.php/article/how-to-recover-data-from-lost-or-deleted-raid-volumes