Create more space for hard drive with hot-swap capability, BPU-230SATA series supports RAID 1/0/1+0/5 configuration for high performance or redundancy data application. Aluminum construction provides light weight but strong stability and extra 80mm fan keep hard drive at maximum performance. High density multi-disk storage backplane that allows multiple 3x3.5" SAS/SATA hard drives to be mounted into 2 standard 5.25". Aluminum construction provides best heat dissipation required for high performance SAS/SATA drives, is designed with excellent front to back vent airflow. Applications: Digital Audio Editing,Video Editing (SD or HD),Security System,SOHO SMEs With Limit HDD Tray and Data Protection or Disk-to-Disk Backup