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Forum Discussion
Duo V2 one disk expansion
Hi all , I have a duo V2 with 1 disk 1Tb installed in X-RAID2. I wanted to expand and bought a brand new 3Tb disk Added the new 3Tb disk to the NAS , sync started and anded after 5 hours successfu...
lforbes wrote:
... The whole point of having a JBOD is that you shouldn't have to do a factory reset.
But you didn't choose to use JBOD, and you certainly knew you were set up for XRAID.
The Netgear manual website says the drive will "expand" automatically so if it doesn't does this mean the NAS hardware is defective?
The hardware is fine. Your link is clearly for Flex-Raid, and you were using XRAID- which is explained quite clearly on page 19 of the software manual (http://www.readynas.com/download/documentation/UM/RAIDiator5-3_Home_SW_en_Nov711.pdf):
With X-RAID2, you can start out with one hard disk, add a second disk for data protection, then add more disks for additional capacity, and X-RAID2 accommodates the new disks automatically.
If you are saying that you should have been able to convert xraid to jbod before you inserted the second drive, then I'd agree. Netgear has provided a non-destructive control to switch between flexraid and xraid on the newer OS-6 NAS, but chose not to retrofit the older Raidiator 4.x and 5.x firmware with that particular feature.
But here you simply added the disk without taking the time to read the manual. So I'm thinking this is really on you, not Netgear.
That said, it would be convenient to be able to downgrade raid-1 back to jbod. It is a corner case (you couldn't downgrade a 3 disk RAID-5 array to a 2 disk RAID-1 array, and most other disk-adds simply can't be undone w/o data loss). However, the corner case would still be worth implementing in a future version of OS 6.
I don't think you understood my post? I am a senior computer engineer who manages corporate servers at work so I had no problems setting up JBOD within the first 10min using RAIDr. I didn't use ANY type of raid at all as I did not want redundancy and I still don't.
I had a JBOD with two 3TB drives on two volumes and then one drive died so I plugged a 4TB drive in and it detected it but the NAS incorrectly created it as a 3TB volume when it should have created it as a 4TB volume.
The link to the document was for the section that says JBOD are created to the volume size which in actuality is completely incorrect.
It it appears that the NAS is incapable of detecting a different size in an existing JBOD configuration unless a factory reset is done.
I will probably have to switch to Qnap or Synology because they actually have the ability to manage the hardware properly.
lforbes wrote:
I don't think you understood my post?
Yes (and my apology). I looked at an earlier post on the thread, and saw the XRAID2 creation, and didn't notice that was a different poster. As an aside, that is why we prefer new threads for each problem - it is too easy to mix up posters. But I should have caught it.
I have no quarrels with folks who want jbod btw - I use RAID-5 on my main NAS, but I do use jbod on the backups. I don't need the availability of RAID for the backups, and if I ever needed to recover data, I'd much rather work with a standalone disk.
I had a JBOD with two 3TB drives on two volumes and then one drive died so I plugged a 4TB drive in and it detected it but the NAS incorrectly created it as a 3TB volume when it should have created it as a 4TB volume.
I agree it should not have matched the old volume size.
I believe the current OS 6 NAS would have handled this correctly (at least I was able to replace my 3 TB jbod disk with a 6 TB disk, and did not have your problem).
You could try going in with ssh and grow the ext partition. It might confuse the firmware (its possible that the 3 TB size is in a database entry somewhere). But if you are facing a reset anyway, there is nothing to lose.
I did do a separate post but no one replied so I thought it more efficient to reply to one that had email notifications of the threads as well. Just an old trick of the trade from many years on MS boards.
I got this NAS brand new 2 years ago so I don't want to have to replace it yet.
You mentioned an SSH command? Is there any documentation on connecting via command line? We manage Linux servers so I could probably figure it out. It is just time otherwise re-copying back 2TB of data after a factory reset.
We are using md raid, LVM and EXT4 on the Duo v2. So if you are familiar with those there should be a way.
As StephenB mentioned you wouldn't run into this problem on our current devices.Can you send in your logs (see the Sending Logs link in my sig).
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