Description
The FACOM 6425A2, B4 and C4 were high-speed, high-capacity magnetic disk units from Fujitsu which were the first to achieve high-speed data transfer at 3Mbyte/s. They were completed in September 1983. These magnetic disk units achieved a high capacity of 630Mbyte by using the same 10.5-inch disks as the FACOM 6421 and increasing memory capacity by 1.4 times that of the FACOM 6421 through improvement of recording density.
