I am probably answering my own question here by just stating it in the title. I am setting up a fileserver on esxi and I have read in some places that going directly to the Windows server is best or a good way of servicing up the LUNs from the SAN. And in other readings I have seen it as let esxi deal with it.
its a 2 part multiple questions.
-let esxi or windows handle iscsi?
-and if I am letting esxi serve then should I be using the iscsi software adapter or the iscsi HBA. and I am already leaning towards the iscsi HBA just by the fact it is more secure and it can give a higher performance.
-and lastly what I am not understanding what is multipathing (i get that it's multiple physical paths to a storage) and how the routing should be setup. there are 4 iscsi adapters shown but the same one repeated twice. so its only 2. (see attached pic; 0&1 have the same iqn and 2&3 have the same iqn). so how will a host failover work? will it cause all routes to be disabled? or will it failover to another host? And is there a limit on the LUN size that i can serve to a path?
I apologize for all the newbie questions. I am just trying to wrap my head around things and confirm my readings. Thank you. appreciate the time.