[wolfgang42]

The OP doesn’t give any hints as to what users are doing, so as I said I just assumed “last 90 days of data” was the only query they’d make, but it’s a fair point that that caused me to leave out CPU power since it’s basically negligible for just shoveling data off of a disk.

Thanks for expanding on my comments about how important actually having detailed requirements is for doing performance calculations!

[chatmasta]

Yes indeed, OP only asked “how much traffic is required,” which could be zero if his database is locked while trying to respond to some absurd query from one of his users :)