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Raid 1 only on one HDD
Hi,
I am seeking some advice
I upgraded my ReadyNas 31200 from 2Tb to Seagate NAS 4TB (both drives are identical) and during the process I now have one HDD showing as Raid 1 showing the volume is degraded and the second drive showing as a spare no raid and zero data and free space.
Drive with data is showing
Data of 2.11TB
Snapshots of 939 GB
Free space of 622 GB
When I copied the Readydrop (full contents on the NAS) this is only showing 744GB, this was done via mapping the drive to Windows 10 pc.
Firmware is 6.10.5
What I was trying to achieve was Raid 1 across the two HDD's
Please advise what is the best way forward.
Thanks
Sean
macleodsje wrote:
Please advise what is the best way forward.
One way forward is to back up everything on the NAS, do a factory default, and then rebuild the NAS and restore the files from your backup.
The benefits of this approach are that it will give you a completely clean filesystem, and it won't require use of paid support.
A second option is to remove the "spare" disk, and then zero it. You can do this by connecting it to a Windows PC (either sata or a usb adapter/dock), and using the erase test in Seatools. Note this is an "advanced" test - Seatools makes you jump through a couple of hoops to run it. Then hot-insert the disk into the NAS - that should resync the RAID-1 array, and then expand. I strongly recommend making a backup of the NAS files before you try this option.
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macleodsje wrote:
Please advise what is the best way forward.
One way forward is to back up everything on the NAS, do a factory default, and then rebuild the NAS and restore the files from your backup.
The benefits of this approach are that it will give you a completely clean filesystem, and it won't require use of paid support.
A second option is to remove the "spare" disk, and then zero it. You can do this by connecting it to a Windows PC (either sata or a usb adapter/dock), and using the erase test in Seatools. Note this is an "advanced" test - Seatools makes you jump through a couple of hoops to run it. Then hot-insert the disk into the NAS - that should resync the RAID-1 array, and then expand. I strongly recommend making a backup of the NAS files before you try this option.
Have you tried a re-boot? Is XRAID enabled (green bar in the indicator on the Volumes page)? Did you swap drives with power on or off?
Because you went to larger drives, the unit needed two re-sync's. Unfortunately, it gives a message that re-sync is complete before it starts the second one. If you shut down the unit before the completion of the second sync, something odd could have happened, but making the second drive a spare doesn't seem like one of them.
If you are familiar enough with the Linux command line via SSH, you may be able to force the drive to be added to the array. But I'll need some information you get from SSH first: the results of cat /proc/mdstat and fdisk -l. If none of the second drive did a sync, that won't be any faster than zeroing the drive and trying again. But if the forst 2TB partition did sync but the second didn't, it should be.
Hi,
I have rebooted the system several times with the hope that it would rectify the matter.
The HDD was inserted whilst the Readynas was on.
I am not familiar with Linux so I will look at doing a factory reset of the device.
Thanks for your prompt response and advice.
Regards
Sean
Hi Stephen,
Sounds like it would be easier to do the factory reset.
Thanks for your quick response to this request.
Regards
Sean
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