I'm running into some serious performance issues with a couple of VMware hosts I have in my datacenter and it's actually due to the physical hardware not quite being up to par. My question is is it better to buy a new beast of a server to combine my 2 hosts into a single ultra fast solution or should I just get 4 decent servers and try to connect them with fiber or 10GbE?
If I'm reading correctly I'm thinking I should migrate these VM's to a single new host so the connectivity between the VM's will be faster? Or, do they actually just talk with 1GB connections when they're on the same host? 10GbE stuff is incredibly expensive so I'm hoping that a single ESXi host will greatly improve performance so I only have to buy the 1 machine and not all this other stuff.