Quantum Corporation is a manufacturer of
tape drive, tape automation, and disk-based data
deduplication backup, recovery and deduplication storage products for physical, virtual and cloud environments. It also sells scalable file storage systems and archive software and appliances for managing data. The company's headquarters is in
San Jose, California. From its founding in 1980 until 2001, it was also a major
disk storage manufacturer (usually second-place in
market share behind
Seagate), and was based in
Milpitas, California. Quantum sold its hard disk drive business to
Maxtor in 2001.