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VMware recommends using multiple vSphere SCSI controllers for each SAP HANA virtual machine. Assign SCSI controller 0 to the operating system disk, SCSI controller 1 to the SAP HANA data devices, and SCSI controller 2 to the SAP HANA log devices.
vSphere offers several different types of SCSI controller to connect disks to a virtual machine:
For best performance, VMware recommends using one VMware Paravirtual SCSI controller for all data devices and one for all log devices.