The growth of the Web has spurred demand for a 26-year-old storage technology called solid-state disks (SSDs.) The need for rapid access times has led to the increasing use of the Dynamic Random Access Memory (DRAM)-based storage devices that emulate magnetic rotating disks. With no moving parts, they are extremely fast and can often eliminate I/O bottlenecks that slow total system speeds. SSDs also protect data through battery and disk backup. Because they are seen by systems as a hard disk array, multiple computers can access SSDs simultaneously.