Asustor AS3304T Drivestor 4 Pro data recovery
Recovering data from a Asustor AS3304T Drivestor 4 Pro, a 4-bay network storage unit sold 2021–2026. We rebuild the volume from images of the drives, so your originals are never written to.
About this unit
- Make
- Asustor
- Model
- AS3304T
- Drive bays
- 4
- File system
- ext4 or Btrfs on RAID built on Linux mdadm
- Years
- 2021–2026
Asustor NAS units were targeted by the Deadbolt ransomware in 2022. Switch off and disconnect an attacked unit straight away.
How we recover it
Every drive is imaged first, repairing any that have failed in the cleanroom. We then rebuild the RAID and the file system in software from the images, check your most important folders with you, and copy everything to a new drive.
What’s it doing?
| Message or symptom | What it usually means |
|---|---|
| “Volume crashed” or “degraded” | One or more drives have dropped out. Don’t repair or rebuild until the drives are imaged. |
| Asks to initialise or reinstall | Don’t. Initialising can wipe the volume. Switch it off. |
| Rebuild stopped part-way | A second drive failed during the rebuild. Very common with large or SMR drives. |
| Won’t boot, no web page | Chassis, power or system partition. The data drives are often fine. |
| Files encrypted by ransomware | Switch it off and disconnect it from the network. Call us before paying anyone. |
| Service | Price + VAT |
|---|---|
| Initial consultationWe find out whether the fault is physical or logical, and the best way to recover it. | Free |
| Cleanroom diagnosticFor clicking, buzzing or silent hard drives. | £79 |
| RAID 0 | £650 |
| RAID 5, 6 and 10Depends on how many drives need repair and rebuild. | £850 to £1,500 |
| NAS, 2 TB (1 TB + 1 TB) with one drive to repair | £450 |
| QNAP or Synology RAID 5 NAS | £650 |
| External drive for your recovered filesPrice follows the market at the time. | £150 (1 TB) to £250 (4 TB) |
No data, no recovery fee. If we can’t recover the files you need, you don’t pay for the recovery, only the cleanroom diagnostic where one was carried out. A donor drive, if one is needed, is bought at cost plus 30%.
Questions
Should I send the whole unit or just the drives?
Usually just the drives, labelled with their bay numbers. Send the unit too for encrypted volumes, Drobo units and anything you aren’t sure about.
It asked me to repair or initialise. What now?
Don’t. Switch it off and call us. Repairs and rebuilds on a failing set of drives are the most common way a recoverable NAS becomes unrecoverable.
Other Asustor units
Ready to get your files back?
Book online and you get a job number by email straight away. Bring the laptop or drive to our London SE1 lab, or call us to arrange a courier collection from anywhere in the UK.