The only changed features are a track width increased from 10 µm to 15 µm and a faster tape speed (2.8 cm / s compared to Consumer DV with 1.9 cm / s), which results in a shorter cassette running time, but also a lower error rate on the Tapes: The same information is written on "more" tape. As with DV, vapor-deposited metal tape is used as the tape material. There are standard and compact cassettes, just like consumer DV, with running times of up to 184 and 40 minutes, respectively.
Another difference to DV that is worth mentioning is that it is 4 times the playback speed. For example, you can use the SDTI interface to copy tape material to a hard disk at 4x speed using an editing program. DVCAM players and recorders are DV (or mini-DV) compatible.