Read this before you do anything else
Switch it off now. The beep is a motor being forced.
A beeping drive is usually a spindle motor trying to turn platters that will not move, and the beep is the sound of that repeated attempt. The heads are commonly stuck to the platter surface, and continuing to drive the motor against that can tear the head from its arm or pull material off the surface it is stuck to. Unlike a clicking drive, this one is often failing to spin at all, which means every attempt is force applied to a stationary stack.
Emergency
NAS beeping
If your NAS is beeping, the most useful thing on this page is above this paragraph, and it is free. What follows is what the fault usually turns out to be, how recoverable this class of failure is, and what it would cost, including the cases we would tell you to take elsewhere.
What this usually turns out to be
One member of the array will not spin, and the rest of the array is still running. That is a more comfortable position than it sounds, because most arrays are built to survive exactly this. It is also where the damage usually happens, since the unit will now want to rebuild onto a replacement and a rebuild is the heaviest load the surviving disks will ever carry. Note also that the beeping may be the NAS chassis itself alarming rather than a drive motor stalling, and those are entirely different problems.
An array is a set of member disks plus the arrangement that binds them. Losing the arrangement loses the data even when every disk is healthy.
Stiction: heads stuck to the platter surface
The heads have settled onto the platters and adhered. The motor cannot break them free, and forcing it is what causes the damage.
Seized spindle motor
The bearing has failed and the platter stack will not turn regardless of the heads.
Insufficient powerbetter news
A bus-powered drive on a weak port or a failing adapter can beep simply because it cannot start. Worth ruling out, and better news if so.
What to check first on a NAS
- Establish whether the beep is the enclosure's alarm buzzer or a disk motor. The buzzer is steady and comes from the chassis; a stalled motor beeps from one bay and is quieter.
- Label every disk with its bay position before removing anything.
- Read what the unit reports about each member and write it down. Do not act on it yet.
What not to do
Do not insert a replacement disk, and do not accept the offer to repair or rebuild the volume. On an array where one disk has already failed, a rebuild is the operation most likely to take a second one with it. Once two are gone, what you have lost is the arrangement rather than a disk.
How recoverable this is
Almost always requires the drive to be opened before anything can be read, because the fault is that the platters are not turning. Once the mechanical problem is corrected the data underneath is frequently intact, because the failure is in the moving parts rather than in the recorded surface. That correction is cleanroom work.
What moves it, for your device specifically:
- Whether the platters were damaged during attempts to force them
- How many start attempts the drive has had since the beeping began
- Whether the head stack can be freed without surface contact
- Whether a matching donor drive is available
We will not give you a percentage for your device, and you should be wary of anyone who does. Nobody can know what is recoverable until the media has been imaged and read. What is above describes this class of failure; your drive gets its own answer after an assessment, in writing, at no cost.
What it costs
Assessed free, then referred at no charge
Cleanroom mechanical work
Clicking, seized or head-crashed drives need internal mechanical work in a controlled environment. We don't have one, so we assess it, tell you what we found in writing, and refer it on. That referral costs you nothing here.
Nothing is charged until you have seen a fixed quote for your actual device and agreed to it, and the assessment that produces it is free.
Other faults on a NAS
Beeping on other devices
Next step
Tell us what failed.
Free assessment. Fixed quote before recovery starts. No recovery, no fee. Sydney drop-off or Australia-wide by tracked post.