RAID 6 Parity

[fidelio]

I know that for RAID 5 if you had ten 2 TB drives approx 18 would be in storage and 2 would be in parity information.

Using this same example, for RAID 6 how much would be in storage versus in parity information? Is there a formula?

 

[mazboy]

Wow. Sounds like a final exam in CS...

 

[USAFRet]

I know that for RAID 5 if you had ten 2 TB drives approx 18 would be in storage and 2 would be in parity information.

Using this same example, for RAID 6 how much would be in storage versus in parity information? Is there a formula?

google is your friend:
https://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_6

 

[fidelio]

"striping with two parity blocks distributed across all member disks"

So is that 2 across a node or an entire system?

 

[USAFRet]

"striping with two parity blocks distributed across all member disks"

So is that 2 across a node or an entire system?

For the entire raid array.