Raid - Mirroring
Raid is a data storage technology that combines multiple disk drives into a logical unit mainly for the purposes of disk redundancy. There are various ways to setup a raid configuration. The cost of raid is dependent on the number of disks, the size of the disks or additional hardware requirements. A RAID system is not a backup. It provides for reduced downtime in the event of a hard disk failure. Data stored on a RAID system should always be backed up to another device! This is a good option for office and department lab computers.