The Nimble Storage array can be connected directly to the Cisco UCS Fabric Interconnect (FI) using 10G cabling.
The array is configured as a UCS Appliance Port.
In a dual FI (A/B) configuration, you need to configure separate VLANs - one for each FI. For example, VLAN iSCSI-A for FI-A and VLAN iSCSI-B for FI-B.
This results in configuring the Nimble Storage NICs into a dual subnet mode of operation. For proper failover management, it is recommended to connect array 10G NIC TG1 to FI-A and TG2 to FI-B.