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Hyper-V 2012 R2 Hosts in Cluster booting from iSCSI SAN LUNS

Question asked by Scott Rose on Mar 26, 2015
Latest reply on Jun 8, 2016 by Robert Hamilton

Has anyone been able to make this HA, in that when a controller on the Nimble fails over, you don't lose the path, and subsequently your Hyper-V host?


I am using Cisco UCS blades in a single chassis dual FEX into dual FI's, and have both a primary and secondary paths (A and B) to the boot LUNS on the Nimble.  Both controllers on the Nimble have paths to each FI as well.  As far as I can tell, there is no way to active/active multipath this at the UCS level, since one path is chosen at boot and remains static after the OS has booted.  MPIO or any type of OS level multipathing is not an option, as the pathing is established at the bios level at boot time.


Anybody have any insight into this, and is it possible to switch paths on an iSCSI Boot LUN without losing connectivity and having the Hyper-V host panic?  I am to the point now where I am contemplating booting the blades off of local storage to avoid this issue in the future.