#VCP - vSCSI controller on each VM - Either Physical Storage Adapter or Virtual SCSI Controller or independent physical adapter - Every step takes less overhead on ESXi - iSCSI is the only technology that can use chap authentication in vSphere ## Adding iSCSI Storage to ESXi - Install preferred Storage adapter - create vmk ports - set iSCSI target - activate dynamic discovery - send targets request sent - refresh storage - new datastore - select free LUN ## VMkernel setup - Single VMK on vSwitch with multiple uplinks - load balancing is done only on vSwitch level - if IPhash load balancing is used, only a single NIC is generally used - Mutliple VMK on different vSwitches - Multipathing plugin from VMware is used, usually the better choice VM -> vSCSI Controller -> VMK -> Ethernet Switch -> Storage Processor of Storage ## 🔗Resources