I have to connect an IBM Server with a QLogic EP2532 to an IBM DS3512 with a PMC PM8032. I need two 8 Gb FC LX 1310 nm SFP+ modules and since they seem to be hard to get, I thought would it be possible to take two 10 GbE FC SFP+? I know there's a different encoding, but does FCoE do the job or are there some problems involved?
No, the PMC PM8032 is an FC-only controller, it doesn't handle FCoE sorry. FC and FCoE are very different at the L1 and 2 levels.