I'm doing some test using 2 twin server (Dell Poweredge SC1435) with 2 opteron quad core (8 core in total) 2.3/2.7Mhz and a local SSD + 1 mecanical HD
I've seen that storage performance, on master, are 25% slower with HA-Lizard then for normal single xen server, I also seen that when i write on disk 4 (crystal disk test on a Windows VM) CPU-cores go from 40 to 65% of load.
It's normally or it's because the server it's not enought powerfull ?