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Forum Discussion
shawie66
Sep 11, 2025Guide
readynas duo v2 disk failed ..
hi guys not completely familiar with all this so i need some advice please. I have a very old readynas duo thats been chugging along for years, however, one of the drives have failed (2 Gb) so maybe ...
- Sep 16, 2025
shawie66 wrote:
I can access the working disk and have backed up the items i need from that, but not the faulty one
By default these NAS are set up with only one volume. The two disks are mirrored, so you would already have offloaded all the files on the NAS from the working disk.
Are you saying you were using FlexRAID with two JBOD volumes set up? If so, there is nothing to sync. Inserting a new drive would let you set up a new volume, but you can not recover any data from the faulty drive - there is nothing to recover it from. That would explain your symptoms.
You could try R-linux for Windows on a PC (freeware), and see if that can access the faulty drive. Or try a data recovery service. But if the drive has actually failed, then even professional recovery is unlikely to get you much (if anything), and it would be quite expensive.
shawie66 wrote:
Also noticed taking these out, the release catches dont work anymore, the caddies are getting harder and harder to remove. one is harder to insert to, but i can see no obstructions.
The Duo's trays can be hard to remove. There are two options.
The first is to insert a push pin in the center of the circular release button ("A" in the diagram). While some have had success with that method, it hasn't worked well for me.
The second is to insert a small screwdriver (or maybe an unbent paper clip) through the hole at one of the two points labeled "B". Pull it downwards toward the release button. This releases the latch mechanism, and is the method I use.
I don't know what you can do to deal with your insertion problem.
There are still some replacement trays for sale on ebay and similar sites. There is a newer tray that has a square release - that doesn't have the issues the original ones have. But those are quite pricey, so IMO a questionable investment given that we are talking about a ~15 year old NAS.
shawie66
Sep 16, 2025Guide
I can access the working disk and have backed up the items i need from that, but not the faulty one. Sorry the faulty one was a baracuda, this is a Toshiba.
The model number of the replacement is DT01ACA200
Also noticed taking these out, the release catches dont work anymore, the caddies are getting harder and harder to remove. one is harder to insert to, but i can see no obstructions.
StephenB
Sep 16, 2025Guru - Experienced User
shawie66 wrote:I can access the working disk and have backed up the items i need from that, but not the faulty one
By default these NAS are set up with only one volume. The two disks are mirrored, so you would already have offloaded all the files on the NAS from the working disk.
Are you saying you were using FlexRAID with two JBOD volumes set up? If so, there is nothing to sync. Inserting a new drive would let you set up a new volume, but you can not recover any data from the faulty drive - there is nothing to recover it from. That would explain your symptoms.
You could try R-linux for Windows on a PC (freeware), and see if that can access the faulty drive. Or try a data recovery service. But if the drive has actually failed, then even professional recovery is unlikely to get you much (if anything), and it would be quite expensive.
shawie66 wrote:Also noticed taking these out, the release catches dont work anymore, the caddies are getting harder and harder to remove. one is harder to insert to, but i can see no obstructions.
The Duo's trays can be hard to remove. There are two options.
The first is to insert a push pin in the center of the circular release button ("A" in the diagram). While some have had success with that method, it hasn't worked well for me.
The second is to insert a small screwdriver (or maybe an unbent paper clip) through the hole at one of the two points labeled "B". Pull it downwards toward the release button. This releases the latch mechanism, and is the method I use.
I don't know what you can do to deal with your insertion problem.
There are still some replacement trays for sale on ebay and similar sites. There is a newer tray that has a square release - that doesn't have the issues the original ones have. But those are quite pricey, so IMO a questionable investment given that we are talking about a ~15 year old NAS.
- shawie66Sep 16, 2025Guide
to be honest i cant remeber how they were set up, it was years ago, but id guess with my unfamiliarity with this NAS i would have used the wizard. I know when i first tested the faulty drive it did show the files that were different to the working one. Now the faulty one just doesnt show up, either in windows or using R-linux. i basically removed the disks from the caddies, used a little WD40 and thats made the latches work again! I had to power the unit down (I removed the disk while it was on) because its position is in a cupboard under the stairs with no light.
I then put the working disk in the right hand position (2?) and the new one in 1. They slotted in prefectly. Obviously the unit was powered on at that point. However, thinking i might have a chance now, i ran Raidar but its showing no disks detected, that said all the lights are flashing the power light flashes steadily, the 3 below (disk activity, led disk 1/2) flash twice slowly and 3 times quicker. hopefully that indicates its trying to set up...- StephenBSep 16, 2025Guru - Experienced User
shawie66 wrote:
to be honest i cant remeber how they were set up
If the two disks contained different shares and files, then you must have been using FlexRAID/JBOD. That's the only mode that gives you that. And since the disks are independent, the volume won't sync when you insert the new disk. Syncing just rebuilds the mirror (copying one drive to the other). With FlexRAID/JBOD there is nothing to copy from.
If you still have the failed disk, you could try powering down the NAS, putting that disk in its original slot (leaving the other slot empty). Then boot the NAS using the option to skip the volume check. Instructions are on pages 15-16 here:
- https://www.downloads.netgear.com/files/GDC/RND2110/Duov1_NV%2bv1_HW_en_06Dec11.pdf
If the NAS boots, then copy off your files immediately - don't shutdown or reboot the NAS until you've finished.
Then we can circle back to creating a new second volume if you want that.
- shawie66Sep 16, 2025Guide
tried the old drive and its not recognising it at all. So i put the 'working' one in and checked. everything seemed ok, it recognised the drive, i can access it without problems. So i put new replacement drive in after and it seems to have recognised that one too and it says it resyncing. so fingers crossed !
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