Keeping spare components on hand for quick and easy swapping of crucial parts makes good business sense.With the high hourly rates generated by editing suites and other mission-critical applications, it"s essential to eliminate even the smallest storage glitch.That"s why this kit includes a spare RAID controller and power supply module for the VTrak x30 Series 3U RAID subsystem.And there"s no special training or certification required for the tool-less hot-swap of these components.