SYNOLOGY DS212 - BREAKING RAID 1

Thank you mate!! i Had problem with mine and with this video you help me ! Thanks again!

Hello Gordon, thanks for your video. I own a similar Synology NAS and I am experiencing the same scenario. I have a RAID 1 setup and one of the drives crashed. I will replace the drive, but I wonder if can access my shares WHILE repairing the volume. It is critical for our business to continue working. So I am trying to determine whether I repair this volume over the weekend when the office is closed or if I can start now? Thank you.

Thank you for this.
I had a DS213+ with a degraded volume and despite a lot of looking around, I could not find out which disk was damaged or how to recover data.
I bought a new disk (WD Red 1-TB) to replace the failed Seagate Barracuda (won't use again).
I whittled down the failed disk (the one making the clanking noise), fitted the new WD, followed your straightforward instructions and after a couple of hours of disk repair, all is is back and working.
So thanks to Synology resiliant NAS, your guide and no thanks to Seagate, all is restored.
I had in the meantime, bought a new WD MyCloud NAS, which I find easier to set up, so now have a choice of two.

Hi Gorden, thanks for sharing. I am wondering if you not hot-unplug the HDD but pwoer-off orderly and take one HDD out, would you get this error and rebuild? RAID1 said to be the exact replica of HDD, so theoretical, you can take one HDD out and it should work without indicating degraded error, right?
On the other side, is this hot unplug really damaging the HDD and need a whole night to rebuid? I guess only the kind of FAT(file allocation table) was corrupt, if so, it is not intelligent to rebuild the HDD using while night time.

Livingstone, Lanark, Mid Calder? defiantly no Glasgow or Edinburgh.Edinburgh this end

Hi Gordon, thanks for the very informative video. In my case the system shows a beep for a disk error. Conflicting status showing. Storage Manager (Overview) shows Volume 1 Degraded. then down the same page it shows Disk One as Status Normal. Then on the HDD/SSD Tab it shows both Disk 1 and 2 as 1 Normal and 2 Initialised. I don't understand? Which disk has actually failed - is Volume 1 the same as Disk One, and if so why is it showing as normal? Thanks very much in advance. John M

why are you whispering?

Hi! Gordon, My question is your data files should not be lost after repairing the volume drive disk 2? or you need to backup in your external drive first before you proceed to repair?
My Synology Nas 8bay having a problem degraded status because the disk 1 failed and cannot detected and need to repair the volume of the disk. TIA!

I'm wanting to buy a NAS, what do you reckon to this? Is it good?

In theory if you connect a drive to a LInux system I believe you can read the data, but when I have tried it I was unable to do so. This is something I have been meaning to try out as I feel its a very valid point. If I ever get around to testing this out I'll certainly post something online.

Thanks for the video!

I have still to do a test on this, but even after searching online for a definite answer, I have came up with nothing of any real use! So..... with that in mind.... I shall endeavour to get an answer and do a video on what I have attempted. Watch this space!

I would like to know whether the RAID is standard RAID, so it can be read by any other RAID card. Say your disk station is broken, so you take one of the disc out and plug it back into your desktop. Will this work?

the old "IN THEORY" it should work scenario is a classic! Have to say though, a very good question and one that did require a bit of digging to find out about! If I go for the newer units, I'll soon see if it works or not!

It looks like you can do this, but as the link below from the Synology forums states, you have to make sure you do it in the right order. ht_p://forum.synology.com/wiki/index.php/How_to_Migrate_between_Synology_Systems

That I have to say is a very good question!!!! IN THEORY.... you would assume so..... but I'll see what I can find out!

I believe the correct procedure, which is crazy, is to back up the single drive and then wipe that, then restore your data and the other drive can then come in as a single drive, etc etc... This is based on what I read on the Synology Web Site. If I get a chance this week, I'll try and break the raid array again and see what other options I can get, but I do think once a raid, you are stuffed until both drives are changed.

Hi Gordon, do you know what the other options are once you've taken out a drive? Can I 'undo' the raid this way? So, take out a drive, turn the other one into a single drive, input drive 2 and format drive 2? I don't want to format my drive but want to start using two single disks. Thanks!

Thanks for this video. Very helpful

@MrGordonian You got me sold. I'd go for a setup like yours, with two 3 TB hard drives.

SYNOLOGY DS212 - BREAKING RAID 1

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