Integrated Server Architecture is a Quantel term for the technology used in its sQ servers to manage the contents of several separate servers simultaneously. ISA operates at two levels: one locks browse and full quality material together under a single ISA database. The other level allows all material held on several sQ servers to be handled as if on a single server, effectively as if on a single database. This facilitates system scaling of users and storage by adding servers and makes possible the ‘ZoneMagic’ operation where two separated servers are kept in step.

See also: NAS, SAN