Here are some of the tips that you can use to avoid losing any data while rebuilding your RAID system. For a RAID system to totally fail, the number of disks that have to fail in the entire array should be more than its hard disk fault tolerance. RAID systems that have a disk fault tolerance of 1 should always be rebuilt as soon as one disk fails. Before you start doing the rebuild, you should, first of all, verify that the new disks you are going to fix and the controllers are all working fine to avoid further problems along the way. Before you rebuild the RAID system, you need to make sure the drives that you’re going to put in the array are backed up. This will ensure data security and also saving all the settings information of the drives When recovering the backups make sure you retrieve them to a different volume During the process of raid data recovery, you might be tempted to delete some files especially if you don’t have enough space. Even if you can recover the deleted files again, there are chances that some of the files may not be recovered. So, make sure you don’t delete anything before the entire process is complete. Before you get started rebuilding your RAID system, you need to make sure the backups that you are going to restore the lost data from are all working fine. This tool is one of those that is useful while repairing corrupt partition tables. However, the negative side about this tool is it can overwrite some files that may end up being lost completely While recovering data, make sure you understand how the particular software you intend to use works to avoid cases of some files being overwritten during recovery. Different data recovery tools have different ways of handling the data recovery process. So, make sure you understand the one you’re going to use Running programs and creating new files may overwrite some data that you intend to recover To avoid the risk of making bad decisions because of a lack of experience, you may have to use an expert to help you out with the whole RAID rebuilding process.