Upgrading drive size from 3TB to larger on ReadyNAS 212

Question

Hi. Completely non-technical noob here so pls be idiot-proof in responses :)
i have a ReadyNAS 212 with 2 x 3TB disks in - th second being a straight RAID copy of the first.
I need to upgrade the disk size to at least 4TB - but how do I do this? Would I simply instead the new 4TB drive into the second drive slot, let the&nbsp;RAID copy take place, then make the RAIDed drive the ‘master’?&nbsp;
&nbsp;
Thanks for for helping me out.

JohnCM_S · Answer

Hi&nbsp;DKgooner,&nbsp;Welcome to the Community!&nbsp;If you are planning to increase the volume capacity size, you will need to replace both disks with a larger-capacity disk. You will replace any of the two&nbsp;3TB disk with the new 4TB&nbsp;then let it sync. When it is done syncing, you can now replace the other&nbsp;3TB disk with another new 4TB then let it sync again. The volume size should expand to approximately 4TB after that.&nbsp;Regards,

DKgooner · Answer

Thanks John - I’ll give it a go...Brgds

Sandshark · Answer

This statement has me confused:&nbsp; "the second being a straight RAID copy of the first".&nbsp; If, by that, you mean you have an XRAID RAID1 volume and the "copies" are managed by RAID, then the instructions John gave are correct.&nbsp;
&nbsp;
If you really mean you have two JBOD or RAID0 volumes that are manual copies of each other, then the instructions are not correct.&nbsp; That, frankly, is a bad configuration.&nbsp; The NAS will use one drive for the home and app folders, and they are not easilly transferred to another drive when drives are swapped in this configuration.

robmash · Answer

You have just described my current situation - RN102 with two drives as independent volumes (no RAID) with manual copies between each.&nbsp; The reason I did that was&nbsp;the drives I had available were different sizes - 3TB and 4TB.&nbsp; Now the 3TB is full and I need to replace it.&nbsp; The problem is exactly the one you describe- the Home folders are on the 3TB drive and moving them is going to be a challenge.&nbsp; I have looked at the forums and found a thread (https://community.netgear.com/t5/Using-your-ReadyNAS-in-Business/Move-home-to-another-volume/td-p/1540209) which talks about moving the references to the home folders in systemd, but after doing this the web gui was knocked offline. :(
&nbsp;
Is there any 'official' way to move home folders to another volume?

StephenB · Answer

robmash&nbsp;wrote:
&nbsp;
Is there any 'official' way to move home folders to another volume?

I suggest backing them up (for example to a USB drive).
&nbsp;
Then delete the volume.&nbsp; It's possible the NAS will migrate them to the remaining volume. (I've seen it migrate the apps folder, but since I personally don't use the home folders feature I'm not sure if it would migrate data for home or not).
&nbsp;
If it doesn't then you'll need to restore the home folders.&nbsp;&nbsp;
&nbsp;
robmash&nbsp;wrote:
between each.&nbsp; The reason I did that was&nbsp;the drives I had available were different sizes - 3TB and 4TB.&nbsp;

You could still have gone with XRAID - you'd have had a 3 TB volume, but it would have worked.

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Upgrading drive size from 3TB to larger on ReadyNAS 212

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