When you create a virtual machine, the default controller is optimized for best performance. For more information, see the vSphere Storage documentation. ESXi supports the NVMe protocol to connect to local and networked storage devices. NVMe is a standardized protocol designed specifically for high-performance multi-queue communication with NVM devices. AHCI, SATA, and NVM Express (NVMe) controllers are also available.
Storage controllers appear to a virtual machine as different types of SCSI controllers, including BusLogic Parallel, LSI Logic Parallel, LSI Logic SAS, and VMware Paravirtual SCSI. If you know about node behavior, controller limitations, and compatibility of different types of controllers before you change or add a controller, you can avoid potential boot problems.
You can make these changes while you are in the creation wizard. You can add controllers or change the controller type after virtual machine creation. To access virtual disks, CD/DVD-ROM, and SCSI devices, a virtual machine uses storage controllers, which are added by default when you create the virtual machine.
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