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Forum Discussion
Recover data from inactive JBOD volume
Dear all,
I'm using RN102, with one 4T HDD and one 1T HDD, running in JBOD, separate volume. I bought a new 4T, wanted to replace the 1T.
I removed the old 1T HDD and replaced it with 4T. When asked for parity or volume expansion, I chose expansion and the whole JBOD volume became 8T.
However, I discovered that I could not read the data in the old 1T. So I took out the new 4T, replaced with the old IT, copied out the data from old IT.
Such doing caused the original 4T HDD becomes inactive and requires me to "destroy" it. I put back the new 4T HDD, but it is also inactive.
I had not modified any data on the original 4T HDD nor the new 4T HDD.
I want advice on how to recover the data in the original 4T HDD.
Please help. thank you so much.
I'm using RN102, with one 4T HDD and one 1T HDD, running in JBOD, separate volume. I bought a new 4T, wanted to replace the 1T.
I removed the old 1T HDD and replaced it with 4T. When asked for parity or volume expansion, I chose expansion and the whole JBOD volume became 8T.
However, I discovered that I could not read the data in the old 1T. So I took out the new 4T, replaced with the old IT, copied out the data from old IT.
Such doing caused the original 4T HDD becomes inactive and requires me to "destroy" it. I put back the new 4T HDD, but it is also inactive.
I had not modified any data on the original 4T HDD nor the new 4T HDD.
I want advice on how to recover the data in the original 4T HDD.
Please help. thank you so much.
4 Replies
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- How did you remove and add these disks, was the NAS on when you removed the 1 tb and replaced it with the new 4 tb ( after you had recovered the data) ?
Do you have a backup?
If you don't have a backup, I would suggest that you do absolutely nothing else and contact support. Leave the NAS as it is and don't do anything with the disk that is not in the NAS. - Thanks for your reply.
I removed the drive when it's on.
No backup was done.
What is UPS? - Did you destroy the volume when you were asked. By removing the new 4 tb disk you effectively removed half of a volume that was spread across 2 disks. It is never advisable to create volumes like this unless you have a robust backup as 1 disk failure destroys the whole volume.
I think your data is gone, but you need to ask Netgear support. Have you logged a support request?
UPS is uninterruptible power supply.
To be clear, these choices were not JBOD.ngpercy wrote: When asked for parity or volume expansion, I chose expansion and the whole JBOD volume became 8T.
JBOD keeps the disks separate, these two options are joining the disks together.
Definitely contact support, they might be able to help. But I think any data on the the 4 TB drives was destroyed by the RAID-0 striping.
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