Thunderbolt™ 2 technology in ST4-TB is phenomenally fast. The two Thunderbolt™ 2 ports on ST4-TB features dual 20-Gbps channels for data transfer and that’s up to four times faster than USB 3. But beyond speed, Thunderbolt gives you unprecedented expansion capabilities. You can daisy-chain as many as six Thunderbolt devices to a single port. And since Thunderbolt is based on Display Port technology, Mini Display Port devices like Apple LED Cinema Display can plugs right in, too.

The ST4-TB built-in with three disk configuration modes: RAID 0 (Speed Mode), RAID 1 (Safe Mode) and JBOD (Four Independent Volumes) for you to choose according to your needs.

The ST4-TB's built-in RAID 1 function controls every record that enters the system, and automatically backs it up into two copies in real-time mode, storing them into the two built-in hard disks separately. The two identical copies of data protect against data corruption, so that the data is available even if one of the hard disks is damaged, thus attaining 100% data security.

The ST4-TB is equipped with a RAID 0 storage mode, which means users can attain up to 724MB/s read speed . Whether it is used for search and editing photo galleries, or for video editing and synthesis, it promises smooth and easy operation.