I have a SAN environment built on FC (Fibre Channel), which is a standalone network from the rest of the DC Ethernet network, and have only Cisco 6509s with Sup720s available for this project.
Most SAN traffic would be from VMWare with web server VMs connecting to their back-end DB.
iSCSI traffic would be kept within a given module as the SAN (HP 3Par and HP EVA) best practice is to have isolated "switches" for the redundant paths, so I don't need to worry about traffic hitting the SUP (at least not yet)-- so I guess DFC is needed -- or traffic needing to flow off the switch and over any uplinks.
My questions are as follows:
- Which modules (1 or 10Gb) are preferred to handle iSCSI if we migrate away from FC?
- Are Jumbo Frames an unquestionable requirement?
- Is it better for these modules to sit in the aggregation layer or access layer in case there's a future need to tie them together (as we have an L2 access layer not directly tied to one another with L2 adjacencies between pairs of access switches that traverse the agg switches).
- Is iSCSI the better choice over FCoE?
The most important question is the first: Which modules are preferred? Please give specific Cisco modules or model numbers in answers.