From: Robotics (Autochangers, Jukeboxes, Stackers, Libraries)

Sony sells three autochangers for their ID-1 line of tape drives,
based on their broadcast line of autochangers. These are known as the
DMS Series, models 24, 300M, and 700M. Not surprisingly, they hold,
respectively, 24 (S,M, or L cassettes), 300 (M only) and 700 (M only)
cassettes for capacities of 2.3, 13, and 30 terabytes.

They have also announced something called PetaSite, which they claim
expands to 3 petabytes and supports both ID-1 and DTF in a single
system.

(rdv, 1996/3/22)