Apple os 10.11.3. Purchased because my Mac mini has thunderbolt x 2. Looking forward to a daisy chain of another unit. Raid, maybe but, our records are 100% electronic storage. Heading toward Cloud and SSD in the home along with our NAS.
All the promises of placing a HD into the receiver and working right out of the box is true. Access speed on a SPINNING drive is good.
One BIG problem about drive which I learned the hard way. I removed a HD from an enclosure, placed it in the TB slot. It mounted BUT, the System said the Disk was NOT readable. Needed to be reformatted. (!) DiskWarrior said the drive could NOT be recovered. oops.
Second. an overnight sleep. In the morning, System said one disk was not ejected properly. Seen this once. If there is a second time, I'll look at the cable and perform a first aid, again.
The method of powering is great. Can power up the entire unit and select individuals to power up/down (mount/unmount). All are accessible from the finder. No problem except as noted as to the improperly ejected volume.