Server Pool Master fails and cannot fail over to another VM Server

Dear All,
Oracle VM 2.2.2
I have 2 VM Servers connect to Storage 6140 Array and on VM Manager I enable HA on the server pool, then on all virtual machines.
- VM Server 1 has role as Server Pool Master, Utility Server, Virtual Machine Server and has virtual machines running
- VM Server 2 has role as Utility Server, Virtual Machine Server and has virtual machines running.
I try to shutdown the VM Server 1 act as Server Pool Master but I don't see Server Pool Master fail over to another VM Server 2 and also status become to Unreachable both of 2 Servers.
Especially, All virtual machines cannot be accessible.
Please kindly give advice for this.
Thanks and regards,
Heng

Thanks Avi, I'll find and read that document. And thanks also for elaborating about the Utility Server.
After reading the followups to my original question, I tried to think of possible server "layouts" in a HA environment.
1) "N" servers in the pool, one of them is Pool Master, Utility Server AND VM Guests Server at the same time. Maybe this will be the preferred server for smaller, quicker VMs.
2) "N" servers in the pool, one is Pool Master AND Utility Server, but has no VM guests running on it
3) "N" servers in the pool, one is the Pool Master, another one is the Utility Server (none of them has VMs running on them), and finally a number of VM Guest servers
Let's take case 1. If the Pool Master & Utility server fails, given that it has VM guests running on it as well, I understand from your explanation that I'll be ANYWAY able to manually "live migrate" the guests somewhere else, using VM Manager. Is this correct?
If it's correct, then it's just a question of how much money I want to spend to have dedicated servers for different tasks, JUST FOR BETTER PERFORMANCES REASONS. Do you agree? And especially: do YOU have dedicated Pool Masters (just to figure out your "real" approach to the problem :-) )
I feel that I still miss something, the picture is not completely clear to me. The fact is, that I'm now testing on my new bladesystem, but for now I put up one single blade. Testing HA will be the next step. I was just trying to get a few things sorted out in advance, but there is still something that I'm missing, as I was saying...
Looking forward to your next reply, thanx again
Rob

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