I bought an EX2 diskless, into which I installed two spare 2TB hard drives. They filled up quickly, so I purchased two 4TB WD Red drives to replace them. The EX2 is currently in RAID 1 mode and set to Auto Rebuild. So I’m wondering if there’s a way to install a new disk, have it rebuild the data from the smaller drive AND increase the overall size of the RAID in the process?
In other words, I eventually would like both 4TB drives in the EX2 to be poplulated with the data that currently exists on the 2TB drives. My plan is to install one 4TB drive and have Auto Rebuild mirror the data from the 2TB, then install the other 4TB drive and have Auto Rebuild mirror the data. At that point, I’ll have both 4TB drives in the EX2, but what I don’t know is if the size of the RAID will increase from 2TB (mirrored) to 4TB (mirrored.) Increasing the overall storage capacity is really what I’m after.