Recovered data volume record: 6.23 TB. On August 12, we received a network-attached storage (NAS) device with a damaged RAID array. A significant amount of time was spent ensuring data safety by creating disk clones, but today the data has been successfully returned to the owner.
We make every effort and use the most modern equipment to ensure that data remains unchanged during the recovery process (and is not further damaged). No matter how much time or resources it takes (unless the client has an urgent request).
We always strive to start work immediately, and the initial diagnostics are usually completed within 24 hours.

RAID (Redundant Array of Independent Disks) is a data storage system that uses multiple physical disks to improve data security and accessibility. RAID can be configured in various ways, such as RAID 0, RAID 1, RAID 5, etc. However, regardless of the chosen RAID configuration, situations may arise where data recovery is necessary—for example, after the failure of one of the disks.
Here are some steps for performing RAID data recovery:

It is important to identify which disk has failed and determine the type of failure (e.g., the disk was removed, malfunctioned, or the RAID array became corrupted).

If one of the RAID disks has failed, it must be replaced with a new one, after which the RAID array can begin the rebuild process. Make sure that an identical or compatible disk is used.

Review the RAID controller configuration settings to ensure that the controller recognizes the new disk and is ready to begin the rebuild process. This is often done through the RAID controller’s BIOS or management interface.

Rebuild the RAID array: Once the failed disk has been replaced, you can begin the rebuild process. This typically means that the RAID array will start copying data from the functioning disks to the new one and reconstruct the data.

Seek professional help: The RAID recovery process is complex — you can consult with data recovery specialists who specialize in RAID data restoration.

It is important to remember that the success of recovery can depend on many factors, including the type of damage, the RAID configuration, and the actions taken after the failure. Preventive measures, such as regular backups, are also essential to ensure data security.