GRAID TB 12TB has two 6TB drives. How to get Sierra to see the two drives instead of one. Need to set up RAID1.
is it a G-RAID with Thunderbolt only or does it also have a USB connection on it?
If it is Thunderbolt only then the RAID is handled within Disk Utility since it is a software RAID device.
If it has USB also then it is a hardware RAID device and you need our configurator to change it to RAID1. G-RAID w/Thunderbolt & USB configurator