The PRO Qxc comes fully populated with 4 hot swappable high performance 3.5” 7200 RPM SATA disk drives, running in RAID 5 protected mode, the PRO Qxc can pump out over 300 MB/s sustained, more than enough for the demands of creative professional working in the highest video resolutions. Want to run faster? Configure the RAID engine to RAID 0 mode and the PRO Qxc will deliver at over 400 MB/s. Check out all the performance spec at the bottom of this page.