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New 8Tb drives in a NetGear ReadyNAS 316
Hi guys, looking for some help.
I have the Netgear ReadyNAS 316 (Firmware 6.8.1), I have 4 x 4Tb drives (Western Digital RED WD40EFRX-68TW0N0) installed from Bay 3 to Bay 6 in a RAID 10 Configuration. Giving me approx 8Tb of storage.
I recently purchase 2 x 8Tb drives (Western Digital Reds WD80EFZX-68WT0N0) to fill the remaining drives on the NAS. Which are under the hardware compatibility for this make and model of NAS.
I have installed the drives into the unit, and I'm unable to expand the volume on the unit. The volume State is New and the Disk State is UNKNOWN. When I try to expend the volume, I receieve the following error...
There was an error in volumes. One or more of the selected disks for the new volume could not be found. Please verify that they are properly installed and try again. Disk node not found. The details say, add the code 1014020000, which according to Netgear is a volume name error.
Under status, my existing drives are showing as green, and the new drives are showing as black
Does anybody have any advice on how to resolve this, thank you.
Lloyd
I tried in the Netgear RAID Calculator and while it's not exactly true that the drives need to be the same space, it will only use an amount from each drive the size of the smallest one. I think that's universally the requirement for RAID10, but wanted to specifically check the Netgear calculator to see there was no exception. Note that the calculator does not take into account the rules of expansion. So while it may appear you can add drives to a RAID10 array, you cannot.
Do you have a compelling reason to use RAID10 over RAID6? RAID6 makes better use of the drives and is expandable. And since you have to start from scratch anyway, now is the time to decide.
8 Replies
According to other threads I've seen, you cannot expand RAID 10. I've never used it myself.
I have seen that error message when I was doing some experiments on a system before putting it in service. It happened when the GUI gave me an option to do an expansion the documentation said it was not possible. Obviously, it's the wrong error message in that case, and you appear to have the same issue. There is an error, you are attempting a disallowed expansion, it's just not the right error message.
Thanks for the reply,
As a test I was successfully able to create a separate volume from the two new drives.
So without the ability to the expand, my options are
1. Backup the data, delete the current volume and create a new volume with all 6 disks = Total of 16Tb Volume
2. Create a new RAID 1 Volume from the 2 new 8Tb disks = Total of 2 x 8Tb Volumes
3. One at a time replace the two of the four 4Tb drives with the 8Tb drives allowing the RAID 10 volume to re-sync = Total of 12Tb Volume.
If I go with Option 1, will I have the ability to swap out the existing the 4Tb drives with large drives (one at a time, allowing for re-sync), increasing the size of the volume without expanding?
Lloyd
Actually, option 3 is yet another RAID 10 expansion and RAID 10 requires a minimum of 4 drives (the same size), so I don't think that's an option..
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