vsphere-esxi-vcenter-server-55-storage-guide

vSphere StorageOne way to achieve the 1:1 mapping when you have multiple NICs, is to designate a separate vSphereswitch for each virtual-to-physical adapter pair.NOTE If you use separate vSphere switches, you must connect them to different IP subnets. Otherwise,VMkernel adapters might experience connectivity problems and the host will fail to discover iSCSI LUNs.The following examples show configurations that use vSphere standard switches, but you can usedistributed switches as well. For more information about vSphere distributed switches, see the vSphereNetworking documentation.Figure 11‐2. 1:1 adapter mapping on separate vSphere standard switchesvSwitch1VMkernel adaptersPhysical adaptersiSCSI1vmnic1vmk1vSwitch2VMkernel adaptersPhysical adaptersiSCSI2vmnic2vmk2An alternative is to add all NICs and VMkernel adapters to a single vSphere standard switch. In this case,you must override the default network setup and make sure that each VMkernel adapter maps to only onecorresponding active physical adapter.NOTE You must use the single vSwitch configuration if VMkernel adapters are on the same subnet.Figure 11‐3. 1:1 adapter mapping on a single vSphere standard switchvSwitch1VMkernel adaptersPhysical adaptersiSCSI2vmk2vmnic2vmnic1iSCSI1vmk1The following table summarises the iSCSI networking configuration discussed in this topic.Table 11‐2. Networking configuration for iSCSIiSCSI Adapters VMkernel Adapters (Ports) Physical Adapters (NICs)Software iSCSIvmhba32 vmk1 vmnic1vmk2vmnic2Dependent Hardware iSCSI84 VMware, Inc.