So you are saying this is expected behavior and this is what i believed all this while too , the reason why i am doubting this is because i have a fas3210 through which i had presented a fc p lun to a server where i set no mulitpaths , the fas3210 is in ha 7 mode and when i fail over those controllers the fcp traffic is seamlessly moved over.On the fas8020 i had to set up multipath I/O for the lun traffic to be not to be disrupted , but on fas3210 i had to do no such thing it automtaically failed over.
the only difference between them is on fas8020 the fcp traffic ports are from onboard fcp port and pcie card and one the fas3210 they are both on onboard ports.
is there a document i can refer to about fcp failover happens in details?
I understand the multipath recommendations that you guys are referring to. The only baffling part for me and has me confused is that on my fas3210 on the fcp connection to a citrix xenhost where i had no multipath set up , when i did a failover the failover was seamless between the two HA 7 mode controllers, but on my FAS 8020 ( same HA 7 mode) when i did a failover initially without mulitpath enabled the Citrix xen host lost access to the luns and when i setup multipath and i did a failover it lost access to two paths ( which i assume is the paths to the failed controller) which should be logical,
I am baffled by the behaviour of my FAS3210 of how could it keep the connectivity to the luns with no mulitpath/no alua enabled ( both on iSCSI conections and FCP connections)