Each ESXi Host in a vSphere cluster hosting the RP4VM vRPA’s (virtual appliances running on ESXi hosts) require the iSCSI channel to allow communication between the ESXi hosts kernel embedded I/O splitter and the vRPA’s, utilizing an iSCSI software adapter running on the ESXi hosts. Thus a software iSCSI adapter and associated VMkernel ports need to be configured on every ESXi node hosting the RP4VM vRPA’s.
This post provides an example of the iSCSI configuration required when using a VMware vSphere distributed switch (VDS). This example displays how to configure the iSCSI settings required for RP4VM via the vSphere web client.
The below steps provide an example on how to create additional port groups on a VDS, create the VMkernel adapters, add the software iSCSI adapter and bind the VMkernel Port Groups to the ESXi iSCSI Adapter along with associated config such as MTU and uplink order.
Note: An upcoming release of RP4VM 5.X introduces a new TCP/IP based communication path for the splitter, which will eliminate the need to configure the iSCSI based software initiator (More on this later).