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Best practice config for ESXi 5 virtual machines (how many Ram,CPU,etc)

I have a HP ML380gen8 with 1 Xeon processor E5-2620 (6core) and 12 Gb RAM. There is a raid5 config with 4 disks (300Gb sas).

On this machines run VMware ESXi5 with a datastore of 838 Gb.

My question:

i want to install 2 virtual machines on the ESX.

1.  SBS2011 (10 concurrent users, mainly office apps are being used (word/excel docs)
2. Win2008R2 RDP server (2 concurrent users)

What is the best config for both machines. In ESX i can set the "number of virtual sockes" and
"cores per socket". For the best performance. How many do i have to assign?

How many ram i have to assign to the machines?
Are there any other things i need to configure?

thx!
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sitpro
Asked:
sitpro
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2 Solutions
 
SagiEDocCommented:
As a base I normally start with 2 CPU, 2 cores and 4GB of memory. I then leave it for a couple days and monitor the performance, if you look under the virtual machines tab you get a quick overview of what the CPU and memory are doing. I also speak to the users and see what the feel is like. If the VM needs more resources I up it, and repeat. Works well for me.
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sitproAuthor Commented:
Is it possible to change the amount of cpu and cores a few times after shutdown the machine?

But 4GB is much to less for a SBS2011 with Exchange in it, isnt it?
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SagiEDocCommented:
CPU must be changed with the machine powered off. You can assign additional memory without shutting down. For the SBS server start at 8GB or 10GB and work from there.
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Nagendra Pratap SinghCommented:
Start with One vcpu, RAM depends on the requirements.

In such a server perhaps you can try with 8 GB for the SBS and 4 GB for the RDP server (Terminal server?)
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Try not to over allocate which is a common mistake.

Start out small and grow

SBS2012 - 2 CPU sockets 16GB RAM

Terminal Serverv2 CPU sockets 8GB
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Your host is really low on RAM put in at least 32GB
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Nagendra Pratap SinghCommented:
Is it 128 GB? That seems more in line with a gen 8 server.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Also install on a SD card or USB flash drive. Rather than on the SAS disks.
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sitproAuthor Commented:
i installed ESXi on the HP SD flash disk. Only the datastored is placed on the HP SAS disks
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
That's good.
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