I have 2 vmware hosts, both connect to an iSCSI SAN, and all VM's are on same lun.
on Host A
I have SBS 2011 running
and Server 2008 R2 running
Both VM's share the same physical nic and Vswitch for general network access
On Host B
I've got various vm's running of various OS's
All VM's share same physical nic and vswitch for general network access
Again, all vm's , for both hosts, are stored on same ISCSI SAN
If I power on ANY VM on host B, the SBS 2011 server on Host A instantly starts lagging. Well before any guest OS loads.
Pings to the SBS Server are extremely high in terms of latency, and some will drop as well.
However, pings to the Server 2008 guest on Host A are fine, and never drop or become latent....
Drivers from both vNIC's on both guest vm's of host A are identical
i'm wracking my brain over this one....whoever can figure this one out deserves 1,000,000,000 points