DESC: Life in a desktop computer doesnt compare to the extreme environment in an always-on, high duty cycle RAID system. Whats needed is a drive engineered to thrive in a high-intensity RAID system while still offering traditional low cost-per-capacity desktop value. That drive is the WD Caviar RE. Designed and manufactured to enterprise-class standards, WD Caviar RE drives provide enhanced reliability in a 24x7, continuous duty cycle environment.