High level Raid and high availability storage in compact design, BPU-340MS series adds extra storage and hot-swap capability to satisfy any application needs. Aluminum body and extra 80mm cooling fan subsystem complete a high end data storage server or workstation. High density multi-disk storage backplane that allows multiple four 3. 5" SAS/SATA hard drives to be mounted into three standard 5. 25" drive bays. BPU-340MS supports RAID 1/0/1+0/5 configuration for high performance or redundancy data application. 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.