Re: Hosts lost connection from iSCSI SAN storage

from the screen shots i can see there is lot of latency errors..

- what is your multipathing policy

- teaming policy

- any etherchannell configured

- howmany nics are there for the iscsi

- what is the MTU settings

-

also check is there any APD/PDL conditions there in the the environment refer the below links

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1030980

http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=1016626

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2004684

http://blogs.vmware.com/vsphere/2011/08/all-path-down-apd-handling-in-50.html