a customer here is asking for one comparative (not only in figures, I mean, not only in HW components memory-cache, FonrtEnd ports, Disks expansion, Slots expansion, and so on), but in any perfomance metrics that somebody has already measured: IOps, MBps, Exchange mailboxes, ...
I am searching for some numbers to differentiate one FAS6040(A) among FAS3160(A) and FAS3170(A) supposing all the cabins would have same number of disks drives in the trays backend
Agreed that it is a bit difficult....I usually go off the Random Read, Random Write, Sequential Read, Sequential Write tests as those work well for comparison across platforms (so far I've been able to generate satisfactory performance numbers using those as needed).
You should also consider the version of DataOntap. 220.127.116.11 takes full advantage of the 31xx series hardware and can give a very significant performance boost: our 3140 went from 60% cpu utilization on 7.2.5 to about 20% on 7.3.1P3.