We have a AFF A220 we will be deploying that has 8 x SFP+Optical 10 Gb Shortwave connectors. We wish to connect it to our Cisco 2960-X switches via the 2 x SFP interfaces on each switch. Unfortunately, the model of 2960 we procured seems to only be able to support 1 GB optical:
1) will we be able to connect the SAN to these switches assuming it will negotiate a connection down to 1 GB due to the switch limitations? A: I don't know to be honest, not qualified to comment on this aspect. However, you might want to look up forums for answers. You might get a reply from our forum members.
2) what client protocols over the FC are available to use for our vSphere cluster given the limited bandwidth on the switch. Assuming SCSI over FC is our only option. A:FC mode supports FC initiator and FC target; CNA mode allows concurrent NIC and FCoE traffic the same 10GbE SFP+ interface and supports FC target.