SD1 (1990s – 2000s)

SD1 was a magnetic tape cassette data storage format introduced by Sony. It used ¾-inch wide tape, which was written and read with a helical scan process.

It came in two sizes, L (large) with a capacity of 100 GB on 1330 meters of tape, and M (medium) with a capacity of 40 GB on 604 meters of tape.

SD1 tape was ANSI ID-1 format compliant for the goal of data interchangeability.

Sources / Resources