
1) Computer storage company
Found on
https://www.crosswordclues.com/clue/certance

Certance was a Privately_held_company engaged in design and manufacture of computer tape drives. Based in Costa Mesa, California, Certance designed and manufactured drives using a variety of tape formats, including Travan, DDS, and Linear_Tape-Open computer tape drives. Certance was one of the three original technology partners, (Certance, IBM, an...
Found on
http://en.wikipedia.org/wiki/Certance
No exact match found.