disk
The KC99-31 is a type of Winchester disk drive, a hard disk drive from the 1980s that was one of the first to use a 4 KB record size. The KC99-31 drive was the original form factor for the product line and had a capacity of 10 MB, with a single platter and a maximum transfer rate of 6 MBps. It was typically used for a variety of applications, including mainframes and mini-computers, but was also used for a variety of other applications, including workstations and server systems. The drive was made by a variety of manufacturers, including StorageTek, Maxtor, and Western Digital.