I just purchased a G-RAID Studio 6TB Thunderbolt drive. After following the instructions I started transferring my photos to the drive from my SD Cards. I moved about 200GB of data. After the file transfers were complete, I ejected the drive (O/S = macOS Sierra Ver 10.12.2) and powered the unit down by holding the switch on the back of the G-RAID Studio. I powered things back up later and got the following message from my mac “The disk you inserted was not readable by this computer.” It seems like the partition for the drive was lost. I downloaded a trial version of data recovery tools and I still see the data.
I initially moved most of the data off my sd cards and was planning to backup to online storage once I organized the data on the G-RAID Studio. Luckily I stopped after 200GB.
I currently do not have access to 200GB of my data without buying recovery software. First I need my data back and second I need to know if this will happen again. I plan to return the drive if WD/G-tech. are unable to help and explain why this happened.
I tried calling support and they are closed. I also tried emailing support but they require a WD serial number which is not provided on the G-RAID Studio or the HGST 3TB Drives.
Drive was formatted as Mac OS Extended(Journaled)->GUID partition map.
Hopefully someone else in the community has successfully resolved this issue and knows why it happened.