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Devices · nas unit recovery

NAS data recovery in Bristol.

You’ve got a failed rebuild, a NAS that won’t boot, a crashed volume or you’ve accidentally deleted some of your shares? We recover ALL brands of NAS (Synology, QNAP and the rest), including SHR and Btrfs as well as ext4. We create an exact copy of EVERY disk in your NAS and then we build your volume back from those copies on our bench. So, with a dead NAS there’s still NO reason for your data to be lost.

From £500 · multi-bay
Most jobs — only pay if we recover your data
Synology · QNAP · +
!

Don't let a failed NAS repair or rebuild itself.

If your NAS displays a crashed/degraded volume; if one of its disks fails or it simply won’t boot: STOP IT NOW! Don’t allow it to perform any repairs/rebuild/resync operations. Any rebuild operation writes to the disks, potentially overwriting the very data that we require to recover and putting the disks into a Windows PC will cause them to be offered to format. Switch off the NAS and document the disk(s) that come out of each bay. Then call us. The first attempt at recovery is always going to be the safest.

// faults we recover from

NAS faults we fix.

These are the types of NAS failures that we most frequently recover data from: volume failures, hardware failures, rebuild failures and logical failures.

⊗NAS won't boot or dead boxAlthough the NAS itself is not functioning, all too often the disks inside are perfectly OK. Just send us the disks and we will reconstruct your volume using the data contained within those disks and recover your shares. There is no reason why a dead NAS should prevent us from recovering your data.HardwareDead box◌Volume crashed or failedWhen a Synology says “Volume crashed” or a QNAP says “Volume Error”, this typically means that one of the disks has gone bad or the file system is corrupted, not that your data is lost. In both cases we recreate the volume using the disks and recover it.VolumeCrashed▤Multiple drive failureToo many disks have failed than the NAS can tolerate and the volume has been disabled; we create an image of every disk and build the array from those images to recover your data.Multi-diskOffline◭Failed rebuild or repairSometimes when you swap a hard drive, something will fail before it completes. This is especially true for rebuilds; they are the places that NAS volumes get lost the most. We will stop at that point, copy everything down, and then rebuild it carefully.RebuildHigh risk⊟Accidental reset, delete or reconfigureSometimes users reset their NAS, delete one of their shared folders by accident or recreate the volume. If nothing has changed much since then, we should be able to rebuild the original volume and recover your data.LogicalReset▦Firmware, DSM or QTS update failedFirmware updates, DSM/QTS updates, even software upgrades sometimes completely brick the NAS unit or destroy the volume. Your data is probably still stored on the disks; we will read those disks, build the volume, and pull out your shares off the box.FirmwareUpdate◈NAS ransomware (QLocker, DeadBolt)Ransomware like QLocker and DeadBolt specifically attack NAS units. When possible, we will recover either older versions of your encrypted data, or unencrypted data, which may be available if the attackers have not yet encrypted the entire set of your data (ransomware attacks require additional attention; please call us).LogicalRansomware◎SHR or Btrfs file-system damageBtrfs, SHR, and ext4 volume corruption can occur after an unexpected power loss or faulty disk failure in your NAS. We reassemble your RAID array and fix your file system to allow us to recover your files and/or snapshot history.File systemSHR⊘Disks removed or out of orderUsers remove disks and incorrectly insert them into other bays. We determine the proper bay location for each disk and rebuild your NAS volume from that information.OrderMembers
// nas units we recover

Every NAS. Every volume.

We can recover all NAS devices including but not limited to: Synology, QNAP, WD, Netgear and Buffalo, all levels of RAID configurations, SHR, Btrfs & ext4 file systems from single two-bay NAS units up to multi-bay units in racks. There are different recovery methods depending upon the brand of NAS device you own, not whether we can help.

SynologyQNAPWD My CloudNETGEARBuffaloAsustorTerraMasterDroboThecusSeagateLaCieZyxelSHRBtrfsext4RAID 1RAID 5RAID 6RAID 10JBODDSMQTSmdadmLVM

Synology (DSM, SHR, Btrfs), QNAP (QTS), WD My Cloud, NETGEAR ReadyNAS, Buffalo TeraStation, Asustor, TerraMaster and Drobo · RAID 0, 1, 5, 6, 10 and SHR · ext4 and Btrfs · 2-bay, 4-bay, 8-bay and rack units, plus expansion bays.

// our recovery process

How we recover a NAS.

NAS recovery involves extracting your files from the disks rather than the unit. The NAS stores all its data within a Linux RAID volume which Windows is unable to see therefore we will image each disk, rebuild the array and file structure then recover your shares independent of the NAS.

01

Free diagnostic

Please tell us the details of your NAS: manufacturer, number of bays, RAID configuration, what happened, etc. We will review and provide you a written quotation (usually within 48 hours). If possible, please indicate which disk was located in each bay.

02

Image every disk

Once we have this information, we create an exact replica (read-only) of all disks associated with your NAS using specialised equipment, even those that may be failing. This way, all our work takes place on copies of the original media; your disks remain untouched.

03

Repair failed disks

When a physical/electronic failure occurs at the disk level, we perform repairs (swapping heads, rebuilding the board) such that we may image the disk. The cost of these types of repairs requires a 50% deposit upfront.

04

Reassemble the volume

Next, we rebuild the RAID or SHR volume layer, then the LVM layer, and finally the ext4 or Btrfs file system that the NAS used, exactly how it originally configured them, off the box.

05

Recover the shares

After the volume has been restored, we pull out your shared folders/files/photos/backups/virtual machines/snapshots/etc. from the reconstructed volume; using the most consistent copy available of your data.

06

Verify

Before returning your shares & files back to you, we ensure they are accessible and complete.

07

Return your data

We will return your recovered data to you on a brand-new drive/NAS sized for the volume, ready for immediate use.

// what we recover from

Every NAS. Your data back.

In addition, since we rebuild every NAS (Synology/QNAP/Western Digital/NETGEAR/etc.) by creating an exact image of each disk and restoring the RAID or SHR volume layer off the box; there’s never a reason why a failed NAS should lose any of its shares.

Every NAS
Synology, QNAP +
Read-only
disks never altered
Off the box
volume rebuilt
48 hr
Diagnostic turnaround
From £500
Multi-bay units
20+ yrs
Recovering data
// get a custom quote

Get a custom quote

Tell us what happened and we will get back to you, usually within one working day.

Prefer to call? 0117 332 1137 · Mon–Fri 9am–5:30pm

// pricing

Clear, fixed pricing.

We provide transparent, tiered pricing for NAS recovery (with a complimentary diagnostic and a written quotation prior to commencing).

NAS data recovery
£500 + VAT
For a multi bay NAS we support RAID 5/6/10/SHR; two-bay mirrors and 3 disk RAID 5 units both start from £500 + VAT. In most cases you only pay if we recover your data.
  • Free diagnostic and a written quote first
  • Two-bay NAS mirror recovery from £500 + VAT
  • Multi-bay NAS — RAID 5, 6, 10, SHR — from £500 + VAT
  • Every disk imaged read-only — your originals are never written to
  • Your recovered data back on a new drive or NAS
// recent recoveries

Failed NAS units. Real recoveries.

Recent snapshots of NAS recovery from crashed volumes, dead NAS units, failed rebuilds and changes in configuration. Results verified. Names have been removed.

// CASE 2026-040recovered
Synology DS920+ · 4×4 TBSHR · BtrfsVolume crashed

Synology that showed Volume crashed and dropped all the shares.

A hard drive had failed and the Btrfs file system was damaged. We captured images of all four drives, assembled the SHR array and recovered all files on the shares.

// CASE 2026-034recovered
QNAP TS-453 · 4×6 TBRAID 5Won't boot

QNAP that wouldn’t power on after a storm.

The NAS unit was dead however all of the disks were good. We rebuilt the RAID 5 volume using the disks and all data was recovered.

// CASE 2026-028recovered
Synology DS220+ · 2×4 TBSHR mirrorBoth disks failed

Two-bay Synology where both disks failed within days.

Both disks were still somewhat alive. Each was repaired and its image created, and subsequently the mirror was rebuilt so that family photos could be recovered.

// CASE 2026-021recovered
QNAP TS-873 · 8×8 TBRAID 6Failed rebuild

QNAP RAID 6 corrupted during a rebuild after two disks were swapped.

Although the build process had partially written over the existing volume, all disks were imaged. Then an attempt was made to create the same layout as when the NAS unit was originally built with the goal being to recover it.

// CASE 2026-014recovered
WD My Cloud · 1×6 TBSingle diskNAS dead

WD My Cloud that died and took the only copy of years of photos.

Although the NAS unit itself was no longer working, there was still one disk which was healthy. The entire Linux-based volume on this disk was copied off it and all data was recovered.

// CASE 2026-007recovered
Synology DS418 · 4×3 TBSHRReset by mistake

Synology volume deleted during a botched DSM reconfiguration.

Due to little new data having been added, we were able to create a copy of the original SHR array. With this completed we successfully restored all of the shares along with all backup data.

// client reviews

NAS units recovered. Customers relieved.

True client testimonials from our two-decade archive.

We had a Qnap Raid 5 eight disk system. Two of the hard disk failed, we replaced disks and attempted a rebuild. After rebuild completed system would not start. We had business critical accounts, SQL Database and Exchange Database on Qnap server. Bristol Data Recovery provided us with reassurance from the start that they could recover the data. They got the system in on Thursday and we downloaded the SQL and Exchange files from them on Sunday afternoon so all staff could work as normal on Monday. 1st class customer service.
Q
QNAP RAID 5 · 8 disksBusiness client · archive testimonial
I run a small photography business and our Drobo 5N Raid 5 External NAS system stopped working last week. We contacted Drobo support but they could not do anything. You guys recovered all our clients data within 4 days and backed up the 8tb of data onto 2 external drives. Great expertise and good communication.
D
Drobo 5N NASPhotography business · archive testimonial
// sending your device in

Two simple steps.

Send us your device for a no-obligation free diagnostic and let us know what went wrong. One of our engineers will inspect it and confirm your exact quote in writing prior to doing any work.

1

Send us your device

To get started with recovering your data, first get your device to us. Wrap it securely, write your contact details on a slip of paper inside the package, include a brief description of what happened and post it to us. After running a complimentary diagnostic we will write to you confirming the exact price prior to starting work.

How to pack it
  • Make sure your item fits in a sturdy, small box or a well-padded envelope.
  • Don’t pack in any caddies, cables or power adapters. We will be able to complete the recovery without them.
  • Write down your contact information (name, address, telephone number and email) on a piece of paper and put this in the package. Alternatively, there is a printable version of our shipping form available on our website which you can print, fill out and place in the package. Seal the package once everything is inside.
Post toBristol Data Recovery
Castlemead, Lower Castle Street
Bristol BS1 3AG
⇣Shipping formPDF · print & include with your devicePDF ↓

Do you want to post the device to us? We highly recommend using a trackable postal service with insurance. Would you prefer to deliver it yourself? That’s fine too. Our office hours for accepting deliveries are Monday to Friday, 9am to 5:30pm. Please make sure to wrap the device as described previously.

2

Need more information?

Need some additional information regarding our data recovery services? Fill out the form and provide further detail about your problem and one of our engineers will review it and offer you a personalised quote.

An engineer reviews every enquiry personally — we usually reply within 30 minutes during the day. Prefer to call? 0117 332 1137.

✓

Thanks — your message is in.

We’ll be in touch shortly. For anything urgent, call 0117 332 1137.

// frequently asked questions

NAS recovery, answered.

The most common questions that we receive regarding recovering a NAS unit.

Typically no. Crashing typically indicates that a hard drive has dropped out or the Btrfs or ext4 file system was corrupted. However, the data is usually still intact. We copy every single hard drive, put the SHR or RAID back together again and then restore (repair) the volume to get access to your shared files. Do NOT allow the NAS to attempt repairs or rebuilds before sending it to us.

Typically yes. A NAS that will not boot, has nearly always failed at the box (this could be either the motherboard or the power supply) but in both cases, the disks within are okay. When you ship the drives to us, we will rebuild the volume from those drives outside of the NAS and recover your files without needing the NAS to function.

NO, please do not try. Your NAS stores its files on a Linux RAID volume that uses either an ext4 or Btrfs file system. Windows cannot read these types of file systems and will prompt you to initialise or format the disk which would destroy your data. Please just bring the disks to us and we will build your volume correctly.

YES PLEASE: send ALL disks (including the one(s) that failed) and if possible indicate where they were located when installed in the NAS. Data recovery from a NAS works by putting ALL disks into a single pool and recovering your data as best as we can from all disks; even a dead disk may contain missing pieces of data that help complete the full picture.

For two-bay mirroring type recovery: Prices begin at £500 + VAT. Recovery for multi-bay NAS’s (RAID 5, 6 & 10 and SHR) prices also begin at £500 + VAT, based on number of disks and work required. All work starts with a complimentary diagnostic and a written quote, and in most cases you only pay if we recover your data.

Most often yes. However, when there is need for a drive-level repair, we require a 50% deposit prior to performing the repair work. And, you are only required to pay the remaining 50% after successful recovery of your data. This protects you in case we are unable to successfully recover your data.

Every brand: Synology, QNAP, WD, Netgear, Buffalo, Asustor, TerraMaster, Drobo and others; every RAID configuration and SHR; every file system type, ext4 & Btrfs. The recovery method varies based upon the make and model of the NAS, however, whether the data can be recovered does not vary.

Sometimes. NAS units are commonly targeted by ransomware. Where there are still unencrypted files; snapshots; or previous versions of the same file, it may be possible to recover these. If the ransomware has totally encrypted all data on the volume, this requires special care, please contact us about this individually and do not make any payments until you have spoken with us first.

Generally yes. NAS unit failures resulting in loss occur mostly when a user performs a rebuild operation because rebuild operations write data directly to the disks. As such, we always create an exact copy of each disk read-only prior to attempting a rebuild operation. Then we use these copies to recreate the original SHR or RAID configuration. Therefore, failure during a rebuild will rarely result in total loss.

Most two-drive NAS units require 3 to 4 working days to complete while multi-bay NAS units can take longer to complete than a single hard drive depending upon how many disks are being recovered and if any of the individual disks require drive-level repairs before proceeding with the larger job. Our complimentary diagnostics are generally completed within 48 hours of receipt. Business-critical cases can usually be expedited.

Please physically remove the disks from the NAS itself and send only the disks to us. We do not remove drives from NAS or RAID systems. Clearly label each disk indicating what bay it was originally located in. Also, pack them tightly enough so that they cannot rattle around inside the package. There are two ways to deliver your disks to us: (a) You may bring them into our office in Bristol Monday to Friday, 9am to 5:30pm. (b) Alternatively, you can post them to us with full insurance coverage. In addition to sending us your disks, also include your name, postal address, telephone number and email address so that we can book them in and provide you with a written quote before starting any actual work.

Just about all of them that arrive in the UK: Synology DiskStations; QNAP; Buffalo LinkStations & TeraStations; Netgear ReadyNASs; WD My Clouds; D-Link ShareCenters; LaCies; Iomegas etc. The important thing is not the manufacturer’s logo but rather what operating system is running under the hood. Most manufacturers run either a custom version of Linux RAID using mdadm/LVM or one of its variants, and therefore we image every single member disk before touching the RAID or SHR layering.

// nas failed?

Volume crashed, dead box or failed rebuild? We'll recover it.

Complimentary diagnostic review, tiered price structure starting at £500 + VAT per NAS for multi-disk systems and in most cases you only pay if we recover your data; successful restoration of all types of NAS (Synology, QNAP and others) off the box. Start your recovery today.

Call us — 0117 332 1137
Mon–Fri · 9am–5:30pm · No fix, no fee
Start a free diagnostic →