I know this question has been asked, but it seems like there hasn’t been good, definitive answers. I’m considering buying an older G-RAID drive with the intention of upgrading to considerably larger drives.
I’d likely buy an 8TB RAID (2 x 4TB, 0G04085 - Thunderbolt 2 and USB 3.0) and replace the two 4TB drives with two 18TB drives.
I contacted WD Customer Support and they responded with “the internal drives of the G-RAID device can be upgraded to whatever capacity you desire and it will work well with the RAID configuration”, but, it would be great to hear if someone’s actually done is successfully.