Yes appreciated, what I think they are attempting to describe is the layout of an LD rather than a raid set (multiple LD's) as this would vary based on the number or nodes so would be variable.
e.g for 4+2 and 6+2
2 Nodes = 12 disks -- 16 disks (minimum)
4 Nodes = 24 disks -- 32 disks
6 nodes = 36 disks -- 48 disks
8 nodes = 48 disks -- 64 disks
Once over the minimums you can get away without the exact numbers above but you'll have a number of chunklets left over per disk which are unable to satisfy the layout requirement of the CPG, but then again these may be able to be utilized by another CPG.
Even so the doc is inaccurate, with mag level each set (raidlet) (4+2, 6+2, 8+2, 10+2, 14+2) must exist on a separate disk, hence the above minimums. With cage the same is also true, but any 2 chunklets in a given set may share the same cage.
It should probably say something along the lines of
Quote:
In the first RAID MP set in the following example, p0 is the first parity step for data steps I, L, M, Q, S, V, and P2 the second.
The letters don't particularly matter, only that they are on separate disks.
There's a feedback address in the document for corrections, if anyone would like to request this
Quote:
17 Documentation feedback
HP is committed to providing documentation that meets your needs. To help us improve the
documentation, send any errors, suggestions, or comments to Documentation Feedback
[url]docsfeedback@hp.com[/url]. Include the document title and part number, version number, or the URL when submitting your feedback.