Hi James
Thank you for doing this. - that sounds similar to what I have though I have 3 servers and, of course, several volumes on my vdisk. When I asked HP their response was :
Pulling a network cable out would not simulate failure - the MSA would not see that as a failure quick enough for the path to change - what I have to do is change the controller (from A to B) and see what happens. This is, of course not the failover that I want - I wanted to see if failover would work if a server or SAN network port failed.
I guessthat unplugging a SAS cable is is but more 'immediate'. Did you see that the disk ownership changed when you pulled out the SAS cable (from the one that was not connected to the orginal owner)? As I have (like you) one Active, and one Active(I/O), and not an active-active setup. it looks like the ownership has to change for the failover to work and that is not going to happen if one network card fails in my setup - It's really only going to work if a controller fails. I guess a switch does give me server card failover protection (though not controller network port failure protection) and I can only get that with 2 connections to the same controller from each server as per Benjamin Smith's note as we saw in the other post https://communities.vmware.com/thread/536168
There an interesting (if old) thread here : https://communities.vmware.com/thread/238726 which talks about ULP - as does this https://h20195.www2.hpe.com/v2/getpdf.aspx/4aa4-7060enw.pdf but I don't get any active/active connections and it seems that the owner has to change for the other path to be used. Ce la via - we had been lucky up to now!
PS - I have now updated the link in my original post - thanks to Dennis
.