DXP2800 · DXP4800 Plus · DXP6800 Pro · DXP8800 Plus · UGOS Pro
UGREEN NASync NAS data recovery. New units, familiar layers.
UGREEN's NASync range launched on Kickstarter in March 2024, from the two-bay DXP2800 to the eight-bay DXP8800 Plus and the all-flash DXP480T Plus, on UGOS Pro, a Linux with Btrfs or ext4 over mdadm that many owners replace with TrueNAS or Unraid on the same hardware. The units are too new for a failure pattern of their own; they arrive with the ordinary ones, a degraded or crashed pool, a drive that clicks, and occasionally a replaced operating system that the owner half-remembers. Every drive is imaged and the layout, UGOS or otherwise, read from the images. A two-bay unit or any set is £500 + VAT upwards; six bays and above from £1,250 + VAT, in writing after the free look.
Rather talk it through? An engineer answers the bench line
0800 6890668
Models we see, family by family.
Which kind of unit is it →| Family | Models | Bays, OS, file system and layout |
|---|---|---|
| Desktop | DXP2800, DXP4800, DXP4800 Plus, DXP6800 Pro | 2–6 bays · Btrfs or ext4 |
| Eight-bay and flash | DXP8800 Plus, DXP480T Plus | 8 bays, or all-flash |
What tends to go wrong on a UGREEN NASync.
UGREEN NASync symptoms, and how long each gives you.
Not listed? Describe it on the form →What the message means on a UGREEN NASync.
Describe yours to us →| What you see | The usual reason | Where that leaves you |
|---|---|---|
| Pool or volume degraded | One member lost; still readable | Copy critical files; power down; no rebuild |
| Pool or volume crashed / unmounted / not active | Too many members lost, or file system damage | Every member imaged; assembled from the superblocks |
| Unit will not boot after an update | System partition or boot flash; data intact | Data arrays assembled without the OS |
| Drives shown as new in another unit | Foreign layout; the unit offers to install | Say no; the order is read from the metadata |
From the box arriving to your files going back.
Work we have closed →Logged the day it lands, and the first look costs nothing Free
A case number goes on the parcel and a number on every drive the day it is opened, and an engineer settles what has actually happened before anything spins. The unit is examined on its own; each drive is assessed on our own equipment, never in a NAS that will try to rebuild. Back to you come two things together: a straight note of what is liftable and what is not, plus one figure, fixed and written down. Accept it, or decline and owe us nothing.
The unit, and the drives, apart
The box and the disks are two different jobs. The unit is tested separately, because a dead power supply, a failed board or a bricked boot flash leaves the drives untouched more often than not. Each drive is then read on the bench: the ones that answer at full speed, and the weak or failed ones in clean air where they need head work. On units that hold an encryption key or a layout of their own, the unit is part of the data and is kept with it.
Every member imaged, once
Nothing is worked on live and nothing is rebuilt on the originals. Every drive in the set is imaged sector by sector, the weak ones head by head with the bad areas last, and the SSD cache with them where there is one. From then on the originals are not touched again.
The set put back together, from the images
Order, chunk size, parity rotation and the reshape point are read from the drives' own metadata and the array is reassembled in software: mdadm and LVM under SHR, X-RAID and QTS pools; a ZFS pool imported read-only; Drobo's BeyondRAID zones reconstructed. The file system, Btrfs, ext4, XFS or ZFS, is repaired on the virtual volume, and encrypted volumes are unlocked there with the key you supply. Never on the originals.
You see the file list before you pay
What was recovered is listed for you first, and only then does a bill exist. Approve the list and it is invoiced; turn it down and it is not — and where nothing has come back, most jobs carry no charge at all. Recovered data travels home on fresh media bought in for your job, with the postage at our end. Your case is not closed until you have opened the files on a machine of your own.
From the bench
- Linux, mdadm, LVM and a file system. The maker's names for the layout sit on the kernel's own RAID, and every layer writes its description on every drive. The bench reads it from the images and needs nothing from the unit but its key.
- A rebuild reads every sector of every survivor. On drives that have aged together it is where the second failure is found. The bench does the same arithmetic on images, which cannot drop out.
- Label the bays. The metadata usually gives the order; the label makes it certain, and a set whose drives were swapped and initialised is a harder job.
What helps, and what harms.
Do this much first
- Power down and label the bays
- Send every drive, the unit and its supply
- Tell us the OS version, the RAID mode and what was clicked
- Find the encryption key if one was set
What sets us back
- Rebuilding, repairing or resyncing
- Reinstalling the OS or factory resetting
- Moving the drives to another unit
- Initialising drives the unit shows as new
Questions answered before you commit.
I put TrueNAS on my UGREEN. Which page applies?
The TrueNAS one, and the bench reads ZFS from the images regardless of the badge. Tell us which system was on it.
Can a PC read the drives from my UGREEN NASync?
No. They carry a Linux volume, usually over mdadm, and a PC offers to initialise them. They are mounted from images on the bench.
What does it cost?
Any set is £500 + VAT upwards; four bays and above from £1,250 + VAT, fixed in writing after the free look.
How long does it take?
5–10 days at the bench for a set; 3–4 days at the bench for a single drive.
Begin here if yours is doing the same thing.
Nothing gets worse while it is powered down.
Looking at it is free. Back comes a list of what opened and what did not, together with a single price to finish, set down in writing while you are still free to say no. On most jobs an invoice only follows the data. Until that list reaches you, leave the unit off and the drives in their bays.