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Forum Discussion
Replacing 2 Drives
We have a ReadyNAS Duo 4 with 4 3TB drives in X-RAID. Drives 3 and 4 are reported as dead in the admin console. So my question is what is the correct way to replace the drives so as NOT to lose any data? Replace 1 disk at a time or both at the same time and should i replace them with the NAS powered off or on?
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Hi,
There is no "ReadyNAS Duo 4", only "Duo" and "Duo v2" and both units have only 2 bays, not 4.
Maybe, you have an "NV+" or an "NV+v2", wiith 4 bays and 4 disks in it.
Regardless of the above, if you have 4 HDDs with X-RAID, you have one disk redundancy. In other words, the volume can tolerate the failure of 1 disk. If 2 disks fail, the volume is gone and the data with it.
If one of the disk is not completely dead, it's possible to reassemble the RAID and recover the data, but this requires expertise.
I would advise you to either contact NETGEAR Support, they do offer Data Recovery services or contact a Data Recovery service provider.
Sorry, ReadyNAS Pro 4 and it has X-RAID2 which can tolerate 2 drives being lost
Hi,
X-RAID2 is the newer version of X-RAID. X-RAID2 doesn't mean dual redundancy.
X-RAID(2) on 4 HDDs uses a RAID5, so single redundancy.
If you check on the GUI of the NAS, do you still see the volume?
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