The Good The Pegasus J2 portable Thunderbolt drive is very fast, optionally bus-powered, compact, and offers RAID configurations.
The Bad The Pegasus J2 is expensive, doesn't include USB 3.0 or a Thunderbolt cable, and requires a power adapter to offer top speed.
The Bottom Line Uniquely designed, the Pegasus J2 is perfect for deep-pocketed mobile users who want a compact, superfast, and RAID-enabled storage device, but not the rest.
Finally, a RAID-enabled, superfast, supercompact Thunderbolt drive
The Promise Pegasus J2 may not be the first portable Thunderbolt drive on the market, but it's still one of a kind.
Despite that it's more compact than any other Thunderbolt portable drive I've reviewed, the J2 manages to be a dual-volume drive, offering users the option of using it as a RAID 0 (default) or RAID 1 drive. On top of that, it uses two solid-state drives as its storage to provide fast data speeds, no matter in what type of RAID you want to configure it in.
The J2 is far from perfect, however. It lacks support for other connection types, such as USB, and it requires an external adapter to offer top performance. It's expensive, too, costing about $800 for 256GB or $1,500 for 512GB, and you have to spend another $50 or so for the much-needed Thunderbolt cable, which isn't included.