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Swapping HDDs between different ReadyNas Duo v2
I have a RedayNas Duo v2 that will no longer mount its 2 HDDs. After a power outage and a successful synchronization of the RAID X configuration (started by the NAS itself) and a scheduled power down...
willeand wrote:
. Looks like disk 1 is about to fail or has failed already but then disk 2 should have taken over, right? Is the Ready NAS OS only on disk 1?
The OS is on both disks, but the system normally boots from the first disk it sees. So I would try booting up with only disk 2 (in slot 2) and see what happens.
willeand wrote:
Its hard to believe that 2 HDDs fail at the same time.
Note one disk might have failed first, which would have put the NAS in a degraded mode. If you weren't watching the status in RAIDar or with the web admin interface, then you might not have realized there was an issue until the second disk failed.
Still, they are likely identical disks, installed at the same time, and subjected to identical loads. So it isn't that unusual for two disks to fail in rapid succession.
willeand wrote:
I do have another ReadyNas Duo v2. Can I try to insert the two HDDs from the non operational NAS to the good one and see if they start up there?
Yes, if they are both the same model. Note there is a lot of confusion with the NV+ and Duo v1/v2 models. The original Duo says "ReadyNAS Duo" on the front panel. The v2 says "ReadyNAS Duo v2" on the front panel.
Many people see other labels on the original (v1) that include "v2", and mistakenly think they own a v2.
Note the NAS boots from the disks, and all settings are on the disks.
I always suggest labeling the disks by slot (and in your case, perhaps by NAS) to make sure you don't mix them up. If the two NAS are running different firmware, then the firmware installation file in the receiving NAS flash will be installed on the hard disks (either upgrading or downgrading the firmware).
One thing to try first - swap the two power adapters, and see if that changes the behavior. I don't think it will, but it is easy to try.
Stephen, many thanks for your reply.
I checke d both NAS, they both say ReadyNas Duo on the front (hence they are v1) and have a label on the underside that says v2 (this still means they are v1, per what you say).I have changed the power adaptors, no change in behavior though.
Raidar will find the troublesome NAS but won’t say what firmware is on it. The line is blank. While the other NAS (with two good HDDs) will state the firmware version in the overview page when you start Raidar. So I have no way of knowing what firmware is on the troublesome NAS.
The HDDs in the troublesome NAS are the same make and model but one is 3 years young than the other. I have a 3rd HDD of the troublesome NAS (before it became troublesome) that I keep alternating in the same NAS every 3 months and I keep it in the office in case my house burns down. Also this HDD is same make and model.
I keep a yellow sticky on that 3rd HDD with the date, the NAS it came from and what bay it was in, here in this case it’s bay1. I did not do any firmware upgrade in the last 3 months.
What shall I do first?
Try the 2HDDs of the troublesome NAS in the good NAS?or
Try to reinsert the 3rd HDD taken out of the now troublesome NAS 3 months earlier when the NAS was ok?
Even losing 3 month of data is painful.
willeand wrote:
What shall I do first?
Try the 2HDDs of the troublesome NAS in the good NAS?or
Try to reinsert the 3rd HDD taken out of the now troublesome NAS 3 months earlier when the NAS was ok?
Even losing 3 month of data is painful.
I'd
- power down the troublesome NAS and removing disk 1. Then power up and see if it boots.
- If that fails, you can then power down, and just insert disk 1 (removing disk 2). See if that boots.
- If 1 and 2 both fail, then update the firmware on the working NAS to 4.1.16 (which is the latest), if it isn't running that already. Then power it down, remove the disks, and migrate both disks from the troublesome NAS. Power up, and see if it boots.
You should definitely not re-insert the removed drive together with one of the others, as it is out-of-sync. You could try it by itself, however.
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