The iStarUSA 4U industrial rackmount chassis D Storm D-407P-50R8PD2. It supports up to seven add-on cards and seven 5.25" bays for hard drive storage for RAID configuration. Combine with BPU or T Series enable hot-swappable storage capability. With 500W redundant power supply, D-407P-50R8PD2 provides your server or cluster maximum reliability and performance with zero down time.