11 Effective Tips to Prevent Data Loss during RAID Rebuild

Hard drives in redundant array of independent disks (RAID) could fail as well. RAID rebuild is one of the methods for people to restore the data in failed drives. But data loss still could occur during the rebuild process. Here are 11 tips for you to ensure the data security.

Redundant array of independent disks (RAID) is a popular data storage technology. But hard drives in RAID fail from time to time. You might want to attempt RAID rebuilds to retrievre your data in the corrupt drives. To prevent any other data loss during the process, you should know following 11 tips.

RAID Rebuild

1.Image your drives before rebuild

You should know that RAID is not data backups. If you want to ensure your data security and save all the setting information about the drive, you ought to image the drive before the rebuild.

2.Always be ready for action

You should always have a rescue plan like keeping at least 2 available hard drives. Therefore, these drives can be used timely after other hard drive failures.

3.Schedule a rebuild as soon as possible

Since some RAID only has one hard disk fault tolerance, as long as RAIDs go into degraded status, things may become worse at any time. For those RAID levels which have one hard disk fault tolerance only like RAID 1, 2, 3, etc. you should schedule a rebuild as soon as possible.

4.Verify the RAID controller and disks

Before the rebuild, you also should check whether the RAID controller and the new drives are completely normal for the process.

5.Retrieve backups to a different volume

By restoring backups to other volumes, you can safely protect important data from accident overwriting on active volumes.

6.Do not create new files or keep running process

To prevent overwriting, you also should not create new files or keep running programs until the hard drive is repaired. Otherwise, your will lose precious data forever.

7.Do not delete any files

Deleting files is moving them from the source to other volumes. Before the recovery of the compromised data in the hard drive, you cannot delete any files because moving files will complicate the data recovery.

8.Test Backups to check if it is available

Like preparing Outlook backups to repair pst files, backup is vital as well. If you have a good habit to keep regular backups, then you must know that testing backups is of great importance too. Thus you should test the latest backup to make sure it is valuable before starting the RAID rebuild.

9.Do not run tools like CHKDSK

Many might like to attempt recovery by utilizing file system apps like CHKDSK. But it may cause even worse problems too. These repair tools can make a new file system automatically because they assume that there is a backup. So they might overwrite your data without any precautions.

10.Do not try data recovery software firstly

Do not use a data recovery application readily before you can make sure the tool won’t write any data to the corrupt drives. Repair software may try to write to the target disk and influence the later recovery.

11.Call in a data recovery professional

If you are a novice about RAID, then you’d better resort to data recovery experts.

They can give many professional suggestions which will directly influence the success of your recovery attempt.

Author Introduction:

Allissa Shen is a data recovery expert in DataNumen, Inc., which is the world leader in data recovery technologies, including damaged sql and word recovery software products. For more information visit www.datanumen.com

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