RAID Server Crashed, Emergency Data Recovery: RAID 5/6/10, NAS, Virtualization

Quick answer: Did your RAID array crash, the server fail, the NAS show a red alarm or did two disks drop at once? RAID recovery is among the most delicate, data spans many disks via parity and striping, and one wrong move loses it all. The key rule: do not rebuild a broken array, do not reorder disks, do not accept initialize/format. DSET brings your server back fast with multi disk cloning and virtual rebuild. 24/7: +90 536 662 38 09.

Do not, the most common causes of data loss

Do not Why
Start a rebuild On a broken array it can permanently corrupt recoverable data
Reorder disks Disk order is the key, label them if removed
Add a disk and sync Parity recomputes and overwrites old data
Accept initialize/format Erases the array configuration
Power cycle repeatedly Can finish off already weak disks

RAID 5 and the URE math, why hurry

RAID 5 tolerates one disk failure but then runs degraded, and a second loss is total collapse. On large disks (8 TB+), the chance of a second disk throwing an unreadable sector (URE) during rebuild is statistically high, so rebuilding a degraded RAID 5 is risky, see RAID 5 crashed. Even if one disk failed but the array still runs, it is urgent, image now.

How RAID recovery works

  1. Clone: each disk is forensically imaged, work is on copies, weak disks read with special hardware.
  2. Solve parameters: stripe size, parity layout and rotation, disk order and offset, virtually.
  3. Virtual rebuild: the array is rebuilt in software and data extracted. See Synology SHR, gauge with the RAID estimator.

Systems

RAID 0/1/5/6/10/50/60, Synology SHR, QNAP, Drobo, hardware and software RAID, server disks, VMware/Hyper-V images and NAS.

Why DSET

Since 2003, multi disk cloning and virtual rebuild, same day on site in Ankara.

FAQ

One disk failed, still running, urgent? Yes, redundancy is gone, image now. Started a rebuild? Stop and call, often still recoverable. NAS red but I can access files? Back up critical data elsewhere without stressing the array, then call.

Emergency RAID recovery: +90 536 662 38 09.