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On 22/09/17 15:44, mr meowski wrote:
On 22/09/17 15:16, Julian Hall wrote:Sorry for the delay in replying. I was able to look at the disk in Gparted, and the partitions were there, it just won't mount. The Synology has no facility to add a HDD manually, it just automatically detects disks which have no problems and offers them to add to an array. As this one has issues it won't see it. That being the case I decided to remove all the partitions in Linux and /then/ try it back in the NAS. To all intents and purposes it is now a flat HDD. The NAS still will not detect it.I have now formatted the drive in Gparted, ext4 for the whole partition, which suggests there is nothing fundamentally wrong with the drive. However, the NAS still will not see it.. I'm beginning to suspect the NAS itself of being the culprit.However, when I had the first faulty drive I remember swapping them and the NAS reported the other bay was faulty, so it does seem to be working.Check the manual for your NAS - what does it actually expect/require of new disks to be recognised according to Synology's documentation? It may be that it specifically requires a *blank* disk with no partition structure at all or a GPT rather than MBR disk for example. Perhaps if it detects a valid ext4 partition it refuses to touch it? Obviously I'm not sure. You probably already know this off the top of your head after shoving so many disks into it recently though. How did the other disks look when they were accepted? Without badmouthing your Synology too much, it does sound like an absolute piece of crap to be honest :[ Did you check the SMART status of the questionable disk under Linux while you had the chance? It could just be another bad disk in defence of the NAS. Cheers
Hi,Thanks for the quick reply. I completely flattened the HDD yesterday and put it in the NAS, and it wouldn't detect it. At that point it was essentially a bare drive, and /normally/ the NAS automatically detects a bare drive and offer it as a candidate to repair a degraded RAID volume; you don't have to do anything to tell it to. So today I put it back in the caddy, as I mentioned above, but it won't recognise it formatted either. I'm running out of ideas, as the last time I had issues I tried swapping the drives and the problem swapped at the same time, so I know the NAS is working.
The documentation gives no guidance on what it wants, I just know from experience that bare drives /should/ just detect. I didn't check the SMART status, and of course the NAS won't detect it for me to try there.
Kind regards, Julian -- The Mailing List for the Devon & Cornwall LUG https://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq