This cannot be right, surely?
~ # esxcfg-scsidevs -a
vmhba0 ata_piix link-n/a sata.vmhba0 (0:0:31.2) Intel Corporation Ibex Peak 4 port SATA IDE Controller
vmhba1 ata_piix link-n/a sata.vmhba1 (0:0:31.5) Intel Corporation Ibex Peak 2 port SATA IDE Controller
vmhba2 mpt2sas link-n/a sas.500605b002a638e0 (0:2:0.0) LSI Logic / Symbios Logic LSI2008
vmhba32 usb-storage link-n/a usb.vmhba32 () USB
vmhba33 ata_piix link-n/a sata.vmhba33 (0:0:31.2) Intel Corporation Ibex Peak 4 port SATA IDE Controller
vmhba34 ata_piix link-n/a sata.vmhba34 (0:0:31.5) Intel Corporation Ibex Peak 2 port SATA IDE Controller
~ #
~ #
~ # vmkload_mod -s mpt2sas |grep Version
Version: Version 06.00.00.00.6vmw, Build: 623860, Interface: 9.2 Built on: Feb 17 2012
Version 6 
I'm running:
~ # vmware -v
VMware ESXi 5.0.0 build-914586
Version 6 seems way too old...