Although RAID is able to provide data redundancy, data loss can occur to it as well. This article will focus on the data recovery after RAID data loss and introduce 6 tips about how to safely recover.
RAID is much more reliable than individual drive due to its redundant array use of hard drives in a single logical unit. Despite this advantage, when internal hard drives fail, the array can get failed, too. In this case, the data will be lost. If you’re intending to recover the data, you had better adhere to the following 6 tips which can help you avoid mistakes in the recovery procedure.
1. Restore External Backups to a Different Volume
It would be good news that you’ve back up the critical files on the external drives. For instance, if you have an additional backup for your PST files, you can recover corrupt PST data readily after unexpected RAID data loss. However, you shouldn’t restore backups on the failing volume. Otherwise, you will overwrite the original data. If the backups also fail in the end, you will have no available leeway.
2. Don’t Create New Files on the Failed Drives
Depending on the same principle as the 1st tip, you should stop creating new files or continuing to run any applications after data loss or in the recovery process. Both of the two actions mentioned above will overwrite the data that are waiting for your recovery.
3. Never Launch Scan Disk Tools
Someone may be accustomed to running scan disk tools to check if there are any errors in the file system. In reality, if you haven’t prepared additional backups, it isn’t advisable to launch this kind of repair tools, which will automatically detect and repair the errors. In this course, new data will be written into the drive.
4. Make an Image before Recovery
Due to the fact that recovery is not 100% safe, it is prudent that you should make an image for the drives in advance. Thereby, even if the recovery fails eventually, you still can use the image file to attempt other types of recovery approaches. As for how to make an image, there are multiple available tool, such as the free tool – DataNumen Disk Image.
5. Don’t Attempt DIY Recovery If Uncertain about the Real Causes
For some reasons, such as cost or curiosity, many laymen hope to attempt a DIY recovery. There are a myriad of related detective and repair software in today’s market. Nevertheless, you should figure out the RAID failure’s root causes before your attempts. If you cannot be certain about this, don’t take the chance. As long as you do something wrong during the recovery, you will destroy all data.
6. Take Recourse to Professionals
As a matter of fact, it is highly recommended to contact related experts for help as soon as you meet up with RAID data loss. For common users, RAID data loss is much more complex and challenging than hard drive data loss. So in this scenario, professionals’ suggestions are more than necessity.
Shirley Zhang is a data recovery expert in DataNumen, Inc., which is the world leader in data recovery technologies, including repair SQL file damage and outlook repair software products. For more information visit www.datanumen.com