NAS & RAID · case record · EDR-2025-2928
A Droning Noise They Kept Blaming on the Fridge.
The little box had served a Newton Abbot lettings office since 2019 — on the shelf above the printer, forgotten about
— until staff noticed a droning noise we kept blaming on the fridge
. A fortnight on, the shared folder refused to open and the front light sat solid red. Support offered a replacement under the RMA; the files inside were, as ever, the owner's problem.
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In plain English.
Underneath the apps and the branding, a My Cloud is one ordinary hard disk with a small computer bolted on. The moment that disk stops answering, everything above it falls over together — shares, dashboard, status light — because every service stands on the same storage. One door, one room behind it. The drone the office had been half-hearing was the disk itself complaining, and a single-bay unit keeps no second copy to fall back on: whatever that one disk holds is the whole estate.
The tools this job took.
See how your case runs →| System | The part it played | Why we rate it |
|---|---|---|
| DeepSpar Disk Imager 4 | Imaged surface by surface off a head map after the swap | Images by head map — timeouts, resets and power-cycling managed per head |
| PC-3000 Data Extractor | Kept timeouts and resets on a tight rein while the tired disk read | The PC-3000's imager, taking its orders from the firmware side |
| UFS Explorer RAID Recovery | Unstacked the appliance's Linux volumes so shares came out as shares | Reads NAS volume managers as the layered systems they are, not one flat array |
On the bench.
Shell off, and judge the bare drive on the bench
Out of its enclosure, the 8TB disk settled the question quickly: its heads were worn past reliable reading, and the drone was the sound of them failing at the job. To the appliance's firmware that simply looks like storage gone mute — so the shares, the app and the light died together.
Fit donor heads, then chart what the wear had cost
A donor head stack from a matched drive restored the mechanism, and mapping came before any long reading. One region had paid for the office's patience: night after night the box had retried its scheduled backups against failing heads, and that band of surface showed the grinding. An appliance left to itself never knows when to stop.
Treat the image as the Linux system it is
WD's firmware lays the storage out as Linux volumes, nothing an NTFS-minded tool would make sense of. Parsed on its own terms, the image opened into the office's shares exactly as staff knew them — property folders, tenancy scans, inventories — rather than a soup of nameless files.
How it ended.
Everything on the agency's list came back on new media, bar one honest exception: a few property photos lay in the worn band and would not read; the report names them. The emptied box left for its RMA holding nothing.
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