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Forum Discussion
Data recovery from inactive volume of ReadyNAS RN104 with four 4TB hard disks RAID-5
Hello, After replacing a disk on channel-2 with a new one and while resyncing at about 60% of the job I lost contact to my data. The message on the top of the screen is "Remove inactive volumes ...
Sounds like a disk in bay 1, 3 or 4 encountered problems during the resync. You should contact support about this. There would be costs involved with them looking into this. If you could let us know your case number that would be great.
I assume from what you've said that you have no backup?
Thank you for your reply.
Yes during the resync another disk in bay 4 encountered problems and changed to FAILED.
And the disk in bay 2 changed immediately from RESYNC to ON-LINE.
And yes again I have no other backup.
I have totally twenty (20) NAS with an average of 10TB each all with four (4) disks and RAID-5.
Should I need 20 more for backup?
I choose the RAID-5 in order to eliminate data loss and after any error message about a disk I am replacing every fault disk with a new one immediately.
Is there any better way for data protection?
Is there any cost estimation of the NETGEAR support in this case?
Thank you again for your support
John
jvozgr wrote:
I have totally twenty (20) NAS with an average of 10TB each all with four (4) disks and RAID-5.
Should I need 20 more for backup?
Up to you of course, but RAID alone isn't enough to keep the data safe. The RAID array can fail, the NAS can fail in a way that corrupts the data, ransomware can corrupt the shares, and of course disasters (theft, fire, flood, lightning) can also cause data loss.
The cost for fixing problems like this does vary depending on the amount of work involved, whether you are willing to clone disks yourself (if needed and if possible) or need our support to try to clone them for you etc.
Also there are other RAID modes that can provide a higher level of protection against disk failure.
However the RN104 doesn't have a CPU engine for P+Q offloading so RAID-6 performance on it is terrible.RAID-10 might work O.K. on the RN104.
For RAID-6 I'd look at the RN204/RN214 and up. Though usually users of that RAID level would use a NAS with more than 4 drive bays e.g. RN316/RN516.Is there any procedure or tool in order to recover data in this case?
Can we change the status of an inactive volume to active ?
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