There are many different levels of protection that a company can purchase to prevent any type of data loss from their system. This includes a RAID system. RAID, meaning redundant array of inexpensive, or independent disks is a method of storing information on hard disk drives that to reduce loss of any information. Exchange database recovery is a process to duplicate information on different units so that in the case one of them fails, the information is not completely lost. A RAID is just another version of this type of system and should be considered by companies that have an enormous amount of data that could be lost.