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VM crashing

Last Modified: 2012-06-27
Hello experts!

I have just started working in a new company and I have just discovered some problems,
First all, there is a HP Proliant DL 380 G4 (2x Intel Xeon 3.2) which is being used as a ESXi 4.1 host.
Second, there are two VMs configured with free license (so I am very restricted by now). One of these VMs is File Server (50 users) and it has been crashing for about 2 weeks.
Then I saw that both VMs are configured with 4 vCPUs. I know that there is no 1:1 relation between vcpu and pcpu but I presume this server has 2 cores.
Is there any possibility of this server is crashing due to "overload of vcpus"? I know that the configuration maximum is 25 vcpus per core or something like that but anyway looks like it has been running since December 2010 and it wasnt cashing until now.
Nothing was installed as far as I know and no changed was applied...
The OS of this VM is a Win2k3 Enterprise...

Thanks in advance,
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