Sent: 06/15/2009
From: Patrick
Message:I keep reiterating these points but its a sadly heated debate over here as
people keep wanting to build index servers with 16 cores and 32GB of ram.
"Patrick" wrote:
Show quoted text
> Hello,
>
> There is some ambiguity going around our office with Hyper-V R2. The
> Hyper-V R2 site says that a Windows 2008 x64 Guest VM will can have up to 4
> processors and some people say that the Client VM can support up to 32
> processors. I have seen alot of blogs and sites saying that the Host will
> support up to 64 but I see on the website the host will support 8 physical
> processors (I guess if they are 6 core that would be 48). What I would like
> to know is the highest number of virtual processors I can get in a Guest
> Virtual Machine and which OS will it be running 2008 or 2008 R2?
>
> Thanks!
Sent: 06/15/2009
From: "Geoff N. Hiten" <(email address - cut out)>
Message:Yes, the documentation is very confusing.
Best I have been able to tell, The Host computer can have a maximum of 32
processors and 64 cores. All guests are still limited to 4 virtual
processors. 2008 R2 has some core optimization tricks where it tries to
keep workloads on the same cores as best it can to limit cahce flushing.
Note that VMWare and Hyper-V have the same virtual core limitation of 4 per
guest.
Hope this helps.
--
Geoff N. Hiten
Principal SQL Infrastructure Consultant
Microsoft SQL Server MVP
(Yes, I am a SQL MVP, not a Virutalization MVP, but I play in that sandbox a
LOT).
"Patrick" <(email address - cut out)> wrote in message
news:(email address - cut out)...
Show quoted text
> Hello,
>
> There is some ambiguity going around our office with Hyper-V R2. The
> Hyper-V R2 site says that a Windows 2008 x64 Guest VM will can have up to
> 4
> processors and some people say that the Client VM can support up to 32
> processors. I have seen alot of blogs and sites saying that the Host will
> support up to 64 but I see on the website the host will support 8 physical
> processors (I guess if they are 6 core that would be 48). What I would
> like
> to know is the highest number of virtual processors I can get in a Guest
> Virtual Machine and which OS will it be running 2008 or 2008 R2?
>
> Thanks!
Sent: 06/16/2009
From: "Geoff N. Hiten" <(email address - cut out)>
Message:I get the same thing with people wanting to virtualize large data warehouse
servers. Then they blame Microsoft when performance totally sucks. After
all, the virtualization vendor told them it would work just fine.
--
Geoff N. Hiten
Principal SQL Infrastructure Consultant
Microsoft SQL Server MVP
"Bill Grant" <not.available@online> wrote in message
news:(email address - cut out)...
Show quoted text
> Have you asked them why they would want to run such a thing in a vm?
> Sounds like an ideal job for a dedicated hardware device.
>
> "Patrick" <(email address - cut out)> wrote in message
> news:(email address - cut out)...
>> I keep reiterating these points but its a sadly heated debate over here
>> as
>> people keep wanting to build index servers with 16 cores and 32GB of ram.
>>
>> "Patrick" wrote:
>>
>>> Hello,
>>>
>>> There is some ambiguity going around our office with Hyper-V R2. The
>>> Hyper-V R2 site says that a Windows 2008 x64 Guest VM will can have up
>>> to 4
>>> processors and some people say that the Client VM can support up to 32
>>> processors. I have seen alot of blogs and sites saying that the Host
>>> will
>>> support up to 64 but I see on the website the host will support 8
>>> physical
>>> processors (I guess if they are 6 core that would be 48). What I would
>>> like
>>> to know is the highest number of virtual processors I can get in a
>>> Guest
>>> Virtual Machine and which OS will it be running 2008 or 2008 R2?
>>>
>>> Thanks!
>
Sent: 06/16/2009
From: "Bill Grant" <not.available@online>
Message: Have you asked them why they would want to run such a thing in a vm?
Sounds like an ideal job for a dedicated hardware device.
"Patrick" <(email address - cut out)> wrote in message
news:(email address - cut out)...
Show quoted text
> I keep reiterating these points but its a sadly heated debate over here as
> people keep wanting to build index servers with 16 cores and 32GB of ram.
>
> "Patrick" wrote:
>
>> Hello,
>>
>> There is some ambiguity going around our office with Hyper-V R2. The
>> Hyper-V R2 site says that a Windows 2008 x64 Guest VM will can have up to
>> 4
>> processors and some people say that the Client VM can support up to 32
>> processors. I have seen alot of blogs and sites saying that the Host
>> will
>> support up to 64 but I see on the website the host will support 8
>> physical
>> processors (I guess if they are 6 core that would be 48). What I would
>> like
>> to know is the highest number of virtual processors I can get in a Guest
>> Virtual Machine and which OS will it be running 2008 or 2008 R2?
>>
>> Thanks!
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