VMware ESXi VM allocation

Hi, with below hardware spec Windows SBS 2011 VM is allocated according to below details- planning to add more Memory - what would be ideal memory for this. Is this server capable of running 1 more VM as terminal server windows 2008?

Physical server Description: HP ML350p G8
6 CPU x 1.99GHz
Xeon CPU-2620 @ 2.00GHz
Processor Sockets :1
Cores per socket:6
Logical Processors: 12
Memory: 16GB
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Windows SBS 2011 VM allocation:
Memory: 14GB
No. of virtual sockets: 4
No. of cores per socket: 2
Total no. of cores (CPUs): 8

Thanks
joyjohnAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
I would recommend the following:-

SBS 2011

2 - 4 vCPU (2 sockets) (1 core), 16GB RAM.

TS

2 vCPU (2 sockets) (1 core), 16GB RAM.
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vmwarun - ArunCommented:
Are you running Hyper-V or VMware ESXi?
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joyjohnAuthor Commented:
ESXi, thanks
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vmwarun - ArunConnect With a Mentor Commented:
You gotta check your peak usage of CPU and RAM when the SBS VM is fully utilized. I normally do not allocate beyond 90% of the available CPU and RAM on the host.

RAM is more a constraint than CPU. If your SBS VM ain't utilizing 14GB (10 GB RAM is generally recommended for SBS 2011), try reducing the RAM on SBS VM so that you can have some buffer for the terminal server VM and the ESXi hypervisor as well.
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insidetechConnect With a Mentor Commented:
The way you allocate your memory, 14GB does not leave anything for any other VM running on this host. You have plenty of horse power to run more, but you may want to increase the RAM in your computer or decrease the SBS allocated memory.
Also... Some food for thought. If performance is what you you are after, why are you running the SBS as a VM?
I can understand the reasons if you are taking an advantage of HA, vMotion and such but if you are not... Consider running the SBS w/o the hypervisor thus taking the full benefit of HT.
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
Also regularly use the free tools available to you to check performance

HOW TO:  Performance Monitor vSphere 4.x or 5.0
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joyjohnAuthor Commented:
what's the best cpu and memory setting for SBS 2011 server having above spec?
and if I add another VM on same ESXi host (Win 2008 TS server for 3-4 users) what's the best CPU setting? will definitely add more RAM.
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