▶ VMware KB: Configuring disks to use VMware Paravirtual SCSI (PVSCSI) adapters

This article includes supplemental information about configuring and using VMware Paravirtual SCSI (PVSCSI) adapters.
PVSCSI adapters are high-performance storage adapters that can result in greater throughput and lower CPU utilization. PVSCSI adapters are best suited for environments, especially SAN environments, where hardware or applications drive a very high amount of I/O throughput.The VMware PVSCSI adapter driver is also compatible with the Windows Storport storage driver. PVSCSI adapters are not suited for DAS environments.
See more:  VMware KB 1010398