ITBrainz

R edundant  A rray of  I ndependent (or  I nexpensive)  D isks, a category of disk drives that employ two or more drives in combination for fault tolerance and performance. RAID disk drives are used frequently on servers but aren't generally necessary for personal computers. RAID allows you to store the same data redundantly (in multiple paces) in a balanced ay to improve overall performance.

 Expanding the capacity of a server by adding new disk drives is a typical activity for administrator. In this article, let us review how to add two new disk drives to the DELL server and create RAID 1 using “Dell PowerEdge Expandable RAID Controller – PERC” configuration utility. This tool is also called as “PERC/CERC Bios Configuration Utility”.