D1, D2, D3, D5, D6, D9 (Digital-S)
D1 cassettes had big price tag, but that was no concern for animation studios. They gratefully used the possibility to store uncompressed video (up to 94 minutes) with a very high image quality.
D2 is the successor of the D1 tape. Ampex developed this new version for professional usage at the end of the 1980s. D2 cassettes contain uncompressed video of 32, 94 or 208 minutes. That is because there were three formats to choose from: small, medium and large.
In 1994, Panasonic launched two varieties of the D5: a standard version and an HD version (D5 HD). The cassettes could contain 23, 63 or 94 minutes of material, and some of them had a yellow valve. Professionals in particular used this carrier for digital video.
D9 was originally known as Digital-S. In 1999, its name was changed. With D9, JVC wanted to compete with Sony’s Digital Betacam. They more or less succeeded. A few companies in Europe, Asia and the United States switched, but it was a commercial failure compared to the Digital Betacam.
Like many other producers, JVS launched an HD variety under the name D9 HD. There was room for 10, 34, 64, 104 or 124 minutes of imagery. The capacity was always mentioned on the tape (for example DS10 means 10 minutes).