Summary: I bought this external hard drive to back up my Dell PC internal 500gb hard drive. I found that the larger size works well due to the normal loss of disk space from the nameplate capacity due to pre-loaded file structure, software, etc. It is working fine.
Summary: Have an iMac with USB2 only, so fast external drives are limited. Got a deal on this one for $149. (1TB drive plus thunderbolt adapter). Backing up a 600GB drive right now. Sustained write speeds of 85MB/sec. The other drive is also on TB, but I doubt it matters since the bus has plenty of capacity.
Fast drive, Thunderbolt adaptor portion works only with laptop drives.
Kendall H. Gelner, Amazon
10 December 2013
Summary: First of all, note that this is really a Seagate Thunderbolt adaptor with a drive included. You can easily remove the included drive, and attach any other SATA 2.5" (laptop) drive - you just can't use the included case for any other drive as far as I can tell.
Summary: Bought this to use with my MacBook. I was surprised at how small it is especially for the capacity. It is compatable with USB 3.0 and FireWire 800 which is what I planned to use it for. Unfortunately I didn't realize it doesn't come with the FireWire docking cradle which you will need.
Summary: Works well, easy to set up. I don't leave it connected all the time, but when I reconnect it backup automatically again. The Seagate Wireless Portable external drive would be a good choice, but a bit much at the moment. make sure you have a blue 3.0 USB port in your computer to get the full speed.
Summary: This is my second Seagate backup. The first Seagate is still going OK after a year but lacks the capacity of this unit. Only time will tell how good any backup drive is. This unit replaced a Verbatim backup drive (western digital drive inside) that never should have failed after 3 years.