Is there a RAID 7?

One of my friends at school was talking about a RAID, he said there was a RAID 7, as to my knowledge no such thing exists. Could someone clarify? I don't think there is but just making sure.

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3 Answers

He could be getting confused in that there are 7 "levels" of RAID, but they are RAID 0 through RAID 6.

There is however a non-standard RAID 7, but it isn't a industry standard like the main levels. You can read up a bit on it here:

There are a number of non-standard RAID levels, if you're interested you can read more on Wikipedia:

Raid 7 is a trademarked marketing term used by the Storage Computer Corporation. The controller card uses its own CPU and combines striping and RAID-5-like storage.

Source

According to this site RAID7 or raidz3 is like RAID5 or RAID6 but with triple parity and can withstand the loss of three drives without risk of loosing data. RAID5 can lose 1 disk, RAID6 can lose 2 disks, & RAID7 can lose 3 disks. The minimum number of disks for a RAID7 volume would be 4 but should really be used with no less then 5.

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