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ADR / Media and machines / Synology, Netgear NAS recovery

Specialist · Synology, Netgear and D-Link NAS

Synology and Netgear NAS recovery, London. A volume the unit will not mount belongs on a bench, not in one more rebuild.

RAID, NAS and server work costs from £500 + VAT, and the assessment prior to that is free. In fact, four different shapes make up almost all of this work. Your Synology comes up to DSM and does not list the storage pool. A rebuild stops because a second bay has gone amber. Your ReadyNAS tells you to remove inactive volumes, which is really saying "I am going to delete them." Or your old D-Link ShareCenter has just gone quiet, years beyond the last firmware it will ever see. Regardless of which of these four scenarios occurs, we clone the disks read-only before we do any further work. We also read the layout of the array back from the clones, and we perform file system repairs using clones too, never on what you've given us. Sets arrive from Bromley, Hammersmith, Richmond, Camden and Westminster.

Only pay if we recover your data, on most jobs A free look first, then one figure in writing Media posted in from Croydon, Ealing and Camden

Put it to an engineer — the first look costs nothing
0203 0868633

Synology and Netgear: what the symptom usually means.

Different fault? Try the finder →
What is going onThe usual reason for itWhere that leaves you
There is no storage pool when the unit boots.What the array reports about its configuration has been damaged. What lies below has not.Turn off the unit. Get a quote first. Post the disks, labelled per bay, if they can be taken out. Otherwise send us the entire NAS.
A rebuild stopped due to an amber second bay.All ageing disks in the box were instructed to read all of their sectors simultaneously.Off at the wall, now
The volume came up read-only and then disappeared.A file system failure above a healthy set.Comes back, usually
One bay is amber yet the shares are accessible.One member is dead, and there is no longer any redundancy left on the other membersHave an image taken today
The firmware was upgraded and the volume never came back.The enclosure is at fault and not the disks. The members behind it remain undamaged.Get a quote first. Then post the disks, numbered by bay, if it is possible to separate the drives from the enclosure. Otherwise post the entire NAS.
A drive inserted into a PC is reported as unformatted.A Linux array means nothing to Windows, hence Windows offers to initialise it.Refuse, and leave it alone
Packing it and posting it: movement is what finishes off a damaged drive, so pack your unit into a solidly constructed container and fill any empty space with padding material. Get a quote first, by calling us or using the form, and once you receive your quote send your unit tracked and insured to our Guildford intake lab, or drop it off there yourself, Monday to Friday, 9am to 5:30pm (no appointment needed). We pay for the trip home. Would you like your packing materials reviewed prior to taping up your box? Please call first. All of this information is detailed within our guide to packing and posting.

Where these units actually stop.

Synology DS and RS unitsTwo bays under someone's desk, or eight and twelve in some form of communications cabinet: between them, these carry most of the workload. DSM displays a pool to you, but beneath that exists an ordinary Linux array, a volume manager atop that, and ext4 or Btrfs at the top (that's why images alone rebuild a set). Hybrid RAID complicates things by creating multiple arrays spanning disks of disparate sizes.
Netgear ReadyNAS and D-Link ShareCenterReadyNAS OS 6 puts Btrfs on top of a growing X-RAID array, and the older NV and Pro models used ext3 in its place. The ShareCenter boxes from D-Link are much less complex, typically a mirrored pair with ext underneath, and long past any updates to firmware. Both write their layout onto their respective members, therefore both are reconstructed from clones here.
Pools, snapshots, iSCSIMuch gets layered upon the raw disks in these enclosures: pools, thin volumes, Btrfs snapshots, iSCSI LUNs shared to remote systems. One layer can fail while leaving everything beneath it perfectly functional. The effort involved in isolating these layers is what consumes the majority of time on any unit that presents with an empty pool.
Never done hereNo one at this facility initiates a rebuild, imports anything, creates a new pool or lets firmware anywhere near what you've sent us. Every one of them writes to a disk, and writing to a disk closes a door. Members are read once and then left alone. Images are repaired rather than original data, so an incorrect course of action costs us an afternoon here and costs you not a penny.

From the box arriving to your files going back.

01

Logged the day it lands, and the first look costs nothing Free

As soon as your parcel arrives here, an engineer assigns a case number that same day, prior to determining what has really failed, which is the first thing done and costs you nothing. In addition to a note of what can and cannot be recovered from your drive, you will receive at the same time the fixed, written price for restoring what can be recovered. You can accept this quote, or decline it, which will result in no further obligation on your part and nothing owed to us.

Nothing to pay for lookingA single figure, put in writingNothing owed at this stage
02

Enclosure and disks are told apart

Each disk is removed from its enclosure and placed upon a write-blocked port, so that it responds independently and not via a failed board. Even the one rejected by the unit receives the same attention. This determines what no front panel ever could: whether it is the enclosure or its constituent members that are faulty. If it is indeed either the board or the firmware that is the cause of the problem and its constituent members are sound, then the task is significantly smaller than implied by the lights.

Each disk read separatelyThe failed part is named
03

Cloned before a thing is assembled

Clones are generated initially. Any surface that reads badly is temporarily set aside while the good, straightforward ground is addressed first, and it is then worked in short runs. All subsequent operations occur against copies or images. No drive supplied by you ever sees a single byte of writing during any phase of operation.

Images before anything elseYour drives are never written to
04

The array first, the file system after

The unit documents all of this information upon the members themselves (which bay each one occupied, how wide the stripe is, where the data begins, and which volume layer resides on top), therefore no reference to the enclosure is necessary to restore the configuration. The set is then rebuilt upon the copies or images, mounted read-only, and the file system corrected thereon. Once that is completed, shares, mailstores and databases can be opened upon this bench. Reference to names in listings proves nothing regarding whether the files associated with them may be opened.

Built over the imagesOpened here first of all
05

You see the file list before you pay

You will see what has been recovered as a list first, after which a bill exists. Accepting the list means that a bill will be issued. Rejecting the list means that a bill will not be issued, and in most cases you only pay if we recover your data. The recovered data travels from here back to you via new media purchased specifically for your project, with the cost of postage paid by us. Your case is not resolved (i.e., "closed") until you personally view the files on a computer of your own.

No charge until you accept the figureFresh media, supplied with the jobThe post home is ours

What arrives most often

  • Enclosures fail more frequently than do disks: a failing power board, a fan that ceased functioning, an incomplete firmware update, and DSM will report an empty pool while a fully operational bank of disks awaits behind it. This represents the economical version of the job, and which version you have is determined by your complimentary assessment, preceding any pricing agreement.
  • Nothing assaults a set harder than a rebuild: to complete a rebuild, each sector of every remaining member must be read. These members were racked on the same date, sourced from the same batch, and have run exactly the same number of hours since. A second amber bay mid-rebuild is not poor luck, then; it is asking the weakest disk left in the set to perform the greatest task it has ever performed.
  • Read the prompt before you agree to it: when a ReadyNAS recommends removing inactive volumes to allow the disk space to be reused, the system is recommending erasure, not repair. When Windows suggests initialising a disk from a Synology, it simply implies that Linux is beyond Windows. Many individuals assume either is evidence that a disk has failed. Neither is. Declining both recommendations would represent the most valuable action identified anywhere on this page.
  • Before pulling a single disk, number the bays. Although the order of the disks may be deduced from the drives at our end, noting the position of each removed disk along with details of attempts previously made to restore functionality will greatly reduce the time required to reassemble the set. Obtain a quote (by phone or with the form) prior to sending all the disks. The disk that has been identified as "bad" is frequently the member still holding the newest blocks.

Four things decide a job like this: the proportion of each disk that remains readable; whether a pool was created afresh upon failure of the original pool; the length of time the rebuild process continued; and whether encryption was ever enabled. If the unit is shut down with all disks still in their respective bays, your options are as wide as they get. Slot a spare disk in, initiate a rebuild operation, flash the firmware twice and run the unit continuously overnight, and your options are significantly reduced, although you will still receive notification of which files fall into the gaps, and receiving such notification continues to cost nothing. Encryption prevents recovery without your providing the key. Storage represents our entire business: no phones or tablets. The published price band for RAID, NAS and server systems begins at £500 + VAT, put in writing after the free assessment, and in most cases you only pay if we recover your data.

One job, followed all the way through.

LDN · ADR-2026-3391JOB LOGGED ✓

After a firmware update, a four-bay QNAP with no volumes left

The four-bay QNAP under an Ealing pattern-cutter's cutting table stored twenty years of work: nesting files, grading sets and pictures of products. After an update the box rebooted and the storage pool disappeared: four lights lit green but no data volumes existed, no shares could be seen and there was nothing on the screen. That same day, the unit was unplugged and the individual drives were sent to us with numbers assigned to them (one to four). Each of the four clones processed without any issues, which narrowed down our focus to the enclosure rather than the drives themselves. We recovered the configuration of the array by reading from the clone images and created a single read-only volume above them, and when we looked within the volume every share was present. From parcel to parcel it took three days, and the patterns were placed on a new drive and sent back, ordered just as the cutting room had always ordered them.

100% imaged sector for sector3 days here, and back to you

What helps, and what harms.

Do this much first

  • Shut down the unit immediately when any bay changes colour to amber.
  • Mark each disk with a label indicating which bay it came from as you remove it from its bay.
  • First obtain a quote for services and then send all disks, including any identified as "bad".
  • Include in your submission a description of any actions taken on the unit thus far.

What sets us back

  • Initiating another rebuild with a member absent.
  • Updating firmware on a system that is currently a member short.
  • Recreating a storage pool in an attempt to see if it returns.
  • Allowing Windows to initialise one of the disks in the RAID configuration.

Questions answered before you commit.

The unit starts and the volume is not there. Are the files still on the disks?

Almost always. Each individual member in one of these enclosures is inscribed with the layout: the position of the member in relation to the others (its place in the order), the size of a stripe, the offset where data begins, and the layers built above. This inscription is fragile compared to the blocks in the lower levels of the storage device. Therefore, a storage pool that has disappeared from an enclosure showing green across all bays is indicative of what the enclosure can no longer interpret, not what data exists on the platters. Turn the enclosure off. Taking out the disks if you can, and labelling each with its corresponding bay number, is ideal. If you are unable to do so, leave the disks within the enclosure as they are. Media copies will be generated prior to reassembly of any of it.

Do I send the NAS itself, or just the drives?

The disks themselves if possible; otherwise, the NAS itself. Draw the disks out and assign a numerical designation to each disk as it leaves (so bay four arrives designated bay four); rack-mounted devices weigh too much to be sent any other way. For non-removable disks, send a desktop Synology or a two-bay D-Link unit whole, powered down and with its power adapter: no aspect of the job is negatively impacted by arrival in this condition. Regardless of disk removal status, send any disk identified by the unit as faulty; very often, this is also where the newest data resides. Obtain a quote first, by phone or with our online request form. There is no counter in London; however, you can post it, or drop it off directly at our Guildford intake lab, Monday to Friday, 9am to 5:30pm (no appointment needed). If you post it, please make sure it is tracked and insured.

Windows offered to format the disk when I plugged it in.

Refuse the prompt and unplug the disk. The data structures these units put on a member are typically based on an array managed by Linux, most often with a volume manager atop that array and a file system (ext4 or Btrfs) on top of that. Windows recognises none of these formats and therefore offers formatting as its sole option. Nothing about your disk is blank; likewise, your disk presents no problems that require repair. Acceptance of this prompt allows a new structural framework to be laid across the first few sectors of the disk, thereby making what would normally be considered a standard job more difficult. If you know this has occurred previously, advise us: this does not stop the work; it simply alters the order in which tasks are done.

What does a NAS job cost, and how long does it take?

From £500 + VAT. Any device containing more than one disk falls into this pricing category (RAID, NAS and servers combined), and the pricing categories are outlined on our price page, so there is no need to contact us regarding pricing. Sequence of steps: a free assessment, then one figure written down, then your approval before anything chargeable is begun. In most cases you only pay if we recover your data. Allow three to four working days for multi-disk sets, from receipt of the parcel at our location until we dispatch the new media. Genuinely urgent situations are moved up, and we pay the postage for the return trip.

Begin here if yours is doing the same thing.

The drive inside the machine → The noises it is making → Nothing detects the disk → Every device we take →

Nothing gets worse while the power is off.

It doesn't cost you anything for us to look at it. All we do is give you a breakdown of what opened and what did not, plus a single fixed price to complete, written down before you agree to let us continue. On most jobs, you only pay if we recover your data. Please don't turn on the drive until you get that breakdown.

0203 0868633

Get it assessed Sending it to Guildford