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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 d...
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?
I turned the NAS back on and now dont see the volume but use to with 2 drives labeled as "dead". I read on here that you might be able to clone the dead drives to new drives, turn the NAS off and insert the new drives. I am cloning 1 old drive to a new drive now. With the volume not showing now, is there any hope? The data should still be on drive 1 and 2, right? My hope is to clone the new drives with the old drives data, insert and power on and this will start a resync.
Your procedure can work, if the cloning works. If one clone fails, you can clone the other drive.
But it is imperative that you have three working drives. Without that, your data are lost, or must be recovered with raid recover software if the two broken drives work "somewhat".
Please detail what is broken with your two broken drives!
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