We just installed a Netapp FAS2020 yesterday and connected to a new ESX 3.5 (update 1) Server, using a Qlogic qla4052c HBA. We are seeing very poor performance with large file transfers. If we copy a 700 MB ISO from the ESX Server's local storage to the SAN the best transfer rate we are seeing is about 36 MB per second. It should be around 90 MB per second.
I want take the HBA's out of the picture and just test using the Software Initiator. Can I have both the HBA and Software Intiator running at the same time?