Technical information

22 EqualLogic Configuration Guide | Version 15.2 | August 2014
6 RAID policies
Each array in an EqualLogic array group is configured with a single RAID policy. Arrays (or group members)
within the same storage pool that have the same RAID policy cooperatively work to host volumes by
distributing those volumes over multiple arrays. Two things that are defined by the RAID policy are:
 RAID level
 Hot-spare configuration
Each array implements a default RAID policy that includes a hot-spare.
The following report contains information about performance characteristics of the RAID
policies under normal and failure conditions and help when choosing the RAID policy that meets
the requirements for specific applications and environments. For a complete understanding of supported
RAID policies for PS Series Group Members, see the report at the link below:
http://en.community.dell.com/dell-groups/dtcmedia/m/mediagallery/19861480.aspx