What is Solid State Disk? -- In The Enterprise:

• Is an array of semiconductor memory organized as a disk drive, using integrated circuits (ICs) rather than magnetic or optical media
• DRAM Based Solid State Disk uses battery backup with a hard drive copy out to maintain persistence
• Flash is already persistent in its storage

This document explains what Solid State Disk is, when you need it, why it is so popular, and the future of SSD.