Choosing the SCSI controller for storage
In vSphere 5.1 there are four types of SCSI controller for a VM. Those are:
Bus Logic Parallel
LSI Logic Parallel
LSI Logic SAS
PVSCSI
In order to successfully boot a virtual machine, the guest operating system must support the type of SCSI HBA you choose for your virtual machine hardware.
Bus Logic is there for supporting your old Guest OS, an example is Microsoft Windows 2000 Server.
LSI Logic is there for supporting your newer guest operating system. There is not much difference in I/O performance between Bus Logic and LSI Logic, however there is a slight difference in the way the hardware represents itself inside the guest. VMware recommends picking up LSI Logic for your Linux Guests.
LSI Logic SAS has been built to support even newer guest operating system with advanced feature support, for example, clustering support in Windows 2008. As it is a specially built controller, it boosts the I/O performance slightly than your legacy controller. You need to...
