Upgrading one of HDD to 4TB drive

[microB]

Hi,

I was running 2x2TB JBOD formatted disks configuration in ReadyNAS Duo V2. I upgraded one of the disks to 4TB, but ReadyNAS created only 2TB volume.So, total capacity remained the same 4TB, I expected it to be 6TB. What can I do to use extra 2TB from my new HDD?

RND2000-200EUS

RAIDiator 5.3.13

HDDs:

WDC WD20EARS-00MVWB0 1863 GB 

ST4000DM004-2CV104 3726 GB

[StephenB]

Do you only have a single C volume, or do you have both a C and a D volume?

[microB]

I have both C and D. Both of them are displayed as 1.81TB

[StephenB]

I don't own the v2, so I don't have direct experience with it.

You could try creating the volume again.  If that gives the same result, you might need to do a factory reset.

Are you familiar with the linux CLI?  If ssh is enabled, you could use the linux command line to expand the file system on the volume.