western digital

Western digital is also notable because it is the first manufacturer which, in 2001, offered mainstream ATA hard disk drives with 8 MB (8 MiB) of cache buffer. At that time most desktop hard disk drives (HDDs) had 2 MB of buffer. WDC labeled the 8 MB models as "Special Edition" and distinguished them with the JB code (the 2 MB models had the BB code). The first 8 MB cache drive was the 100 GB WD1000JB and soon models with capacities from 40 GB to 250 GB and more followed. WDC advertised the JB models as a good choice for cost-effective file servers.

The western digital 1771 and its kin were WDC's first entry into the data storage industry; by the early 1980s, they were making hard disk controllers, and in 1983, they won the contract to provide IBM with controllers for the PC/AT. That controller, the WD1003, became the basis of the ATA interface (which WDC developed along with Compaq and Control Data's MPI division, now owned by Seagate) starting in 1986.