Redundant array of independent disks, or RAID is a storage technology that combines multiple disk drives into a logical unit. Data is distributed across the drives in one of several ways called “RAID levels”, Depending on the level of redundancy and performance required data is distributed in one of several ways called RAID levels or configuration.
One of the most common RAID configurations is RAID 5 due to its high access speeds and reliable redundancy. It can keep operating after a single drive failure, and physical media damage rarely causes data loss on these types of systems.
However, RAID 5 redundancy does not protect against accidental deletion or other sources of logical file damage.
It is important to know that if you unintentionally delete files or partitions from your RAID device, your RAID will not immediately overwrite your data as soon as you delete files, but the longer that the device operates, the higher the chances of a complete overwrite.
Do not run any programs on your RAID after deleting data. Never attempt to copy files to another device or rebuild your array. You can safely make individual bit-by-bit clones of your RAID hard drives, but only by accessing the drives individually from another machine. Commercial data recovery utilities are rarely designed to repair damaged RAID data, and you may accidentally overwrite your data when using these utilities. Your system constantly reads and writes information while operating, so you should access your RAID from another system if possible or use a utility that prevents your RAID’s operating system from overwriting information. Never install a new file repair or data recovery utility after losing access to your data, as this can immediately overwrite your files.
Look for a professional data recovery company that has appropriate knowledge and tools to treat RAID media. Data recovery provider should have direct experience with an operating system used on your RAID, filesystem and file type.