1. In a computer system including a host computer connected to a storage system having storage devices that are represented as logical storage units, a method of carrying out storage operations on at least one file segment that is stored in at least two non-adjacent locations in one or more logical storage units, said method comprising: issuing a single instruction from the host computer to the storage system; and carrying out the single instruction on said at least one file segment at the storage system until completion of the single instruction and independently of the host computer.