On 10 Apr 2012, at 10:04, Neependra Khare <neependra.khare@xxxxxxxxx> wrote: > $ fio.exe --name=baseline --rw=randwrite --direct=1 --size=1g > --iodepth=32 --blocksize=4096 --ioengine=windowsaio > --filename=E:\filename --name=hddBaseline --stonewall > > In all these cases I do not see any IO happening on "E" drive using > "perfmon". All the IO happens on the root drive("C"). ':' is a file name separator in fio (so e:\filename is writing to \filename on the current disk) so you should try escaping it, e.g. --filename=E\:\filename . -- Bruce Cran-- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html