Hi- the SAS adapters are on the HCL, and I installed the vib package provided by dell (vmware-esxi5.0-SAS-provider.vib) using PuTTY
I ran the command esxcli software vib list | grep LSI which appears to show that the software is installed
Running the command esxcfg-scsidevs -a shows that the the adapter is there.
vmhba2 mpt2sas link-n/a sas.5848f690ecc2b200 (0:5:0.0) LSI Logic / Symbios Logic Dell 6Gbps SAS HBA Adapter
but I can't see it from the vShphere client. Strange..