Re: [Xen-users] maximun memory for windows domU

[Alberto Asuero Arroyo <albertoasuero@xxxxxxxxx>]

Thanks Nathan,

I'm running a w2k8 with 20 gb of ram, I'm asking because my server freezes or reboots (usually without any message on console or logs)

My server has 48GB of memory so the memory doesn't should be a problem...

Any ideas ??

On Mon, Jun 29, 2009 at 6:49 PM, Nathan Eisenberg <nathan@xxxxxxxxxxxxxxxx> wrote:

To clarify, as I have now had multiple people email me off-list:

You'd need 20.25 GB installed so that you have memory for the Dom0.  Since you're unlikely to install this amount of memory (your next likely RAM quantity would be 24GB), there's no problem.  My point was just that you can't forget that Dom0 and the hypervisor are their own systems, and need memory to function.  :)

Also, I had someone ask about whether Windows would see it (due to the oft-misunderstood memory 'limitations' of 32-bit Windows) - this link is handy.  http://msdn.microsoft.com/en-us/library/aa366778(VS.85).aspx

So you'll either want to use Enterprise or Datacenter (which support 64GB of memory in 32bit mode), or use a 64-bit version of any edition.  I've heard reports that 64bit Windows seems to perform better in HVM than 32 bit, so that might be a good idea anyways.

Best Regards
Nathan Eisenberg
Sr. Systems Administrator
Atlas Networks, LLC

support@xxxxxxxxxxxxxxxx
http://support.atlasnetworks.us/portal

-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Nathan Eisenberg
Sent: Monday, June 29, 2009 8:31 AM
To: xen-users
Subject: Re: [Xen-users] maximun memory for windows domU

If you have 20.25 gb of memory installed, yes.
Best Regards,
Nathan Eisenberg
Sr. Systems Administrator
Atlas Networks, LLC

Sent from my BlackBerry

-----Original Message-----
From: Alberto Asuero Arroyo <albertoasuero@xxxxxxxxx>

Date: Mon, 29 Jun 2009 17:29:28
To: xen-users<xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] maximun memory for windows domU


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