RAID 7 (redundant array of independent disks)
RAID 7 is a trademarked RAID level owned by the now defunct Storage Computer Corp. It is a non-standard RAID level that requires proprietary hardware.
RAID 7 is based on RAID 3 and RAID 4, but adds caching. The commercial implementation incorporates proprietary disk array hardware with a real-time embedded operating system to control disk drive access and data flow to host interfaces.