I hope someone can help me with this as I can't find details on how this would work in the docs I've downloaded. I apologize for my ignorance, but I am a VMware admin with very little NetApp experience.
I started at a new company that has a FAS2040 with two controller and two shelves. The first controller has all four interfaces bonded to 1 vnic for iSCSI only for the VMware environment, which has one of the shelves dedicated to it. The second controller has all four interfaces bonded to 1 vnic for CIFS sharing, which has the other shelf dedicated to it. The current IP structure is 10.x.x.20 for iSCSI and 10.x.x.21 for CIFS. Both IP addresses are configured as iSCSI targets in vCenter for the ESXi servers.
Now for my question, how does failover work from an iSCSI standpoint. I can find some references to one way or the other, but I can't find examples of this scenario. The way I have done this in the past with a Dell EqualLogic was to used two interfaces bonded to 1 vnic on each controller, using two IPs, then configuring multipathing. This way if I had a failure with one controller the ESXi servers would still ahve connections to the iSCSI datastores and everything would continue as normal. The end goal from my perspective is to get the iSCSI traffic onto a separate subnet, but to create a little of a downtime as possible to both the iSCSI and CIFS shares.
Any help would be greatly appreciated, and if you have links to other posts or pages in manuals, those would be great as well. Thanks in advance.