A NAS volume failed. Can the files be recovered?

What arrived at the lab

The NAS hard drives arrived after the volume failure had already stopped normal access to the share. We photographed the intake condition, logged the ticket, and kept the set together so the member order could be preserved through testing. Nothing was written back to the original disks. From the first bench pass, we treated the job as a RAID recovery, not as a single-drive repair.

Bench work on the NAS hard drives

We opened the NAS hard drives on the bench as a RAID job. Each disk was photographed, logged, visually inspected under the scope, and tested before any recovery work continued. We did not ask the NAS to assemble the volume again, because a rebuild can write new parity or metadata over the older layout. We imaged the member drives to healthy lab media and worked from those images, keeping the original set unchanged.

Drives that arrive like this usually point to array-level problems rather than a simple folder issue. The usual suspects are a weak member drive, stale RAID metadata, a dropped disk that was later reintroduced, or a rebuild attempt started in the wrong state. With NAS volume failure, our job was to preserve each disk, determine a controlled logical reconstruction path from the images, and test the recovered file structure before anything was prepared for return.

The recovery result

Data recovered meant the volume was reconstructed from the working images and the recovered file structure passed verification before release. We checked directories and file opens from the recovery set, then prepared the recovered files on return media. For mailed-in jobs, our insured UPS shipping process returned the completed recovery to the customer.

If yours looks like this

If your NAS drops a volume, power it down and do not start a rebuild, initialize the disks, update firmware, or move drives between bays without documenting their order. Keep the set together and call 732-933-7717 before experimenting. We can receive mailed-in NAS hard drives nationwide, with the $100 diagnostic applied toward the recovery, and the diagnostic answering everything before any decision.