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[Xen-users] RE: Windows 2008

  • To: "'Ky Srinivasan'" <ksrinivasan@xxxxxxxxxx>
  • From: "Venefax" <venefax@xxxxxxxxx>
  • Date: Tue, 6 May 2008 02:29:13 -0400
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Mon, 05 May 2008 23:30:57 -0700
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Dear Ky

I installed SLES 10, but could  not upgrade to SP1 or SP2. How do I get a
full DVD with Sp2 already incorporated? Or do I have to reinstall my box
with SP1 and then upgrade on-line? I would rather have a DVD of SLES 10 SP2.
I am going to test this to the fullest, with SQL server 2005 non Windows
2008, and let you know the performance benchmarks. My box has 16 cores 2.93
GHZ  and 128 GB or ram.

-----Original Message-----
From: Ky Srinivasan [mailto:ksrinivasan@xxxxxxxxxx] 
Sent: Monday, May 05, 2008 12:43 PM
To: Venefax
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: Windows 2008

>>> On Sat, May 3, 2008 at  2:02 PM, in message
<000f01c8ad47$cc1bdb00$64539100$@com>, "Venefax" <venefax@xxxxxxxxx> wrote: 
> Dear Kri
> I read the thread on the "shim" that you wrote to help Windows 2008 run on
> top of XEN with more efficiency.
> I need to install Windows 2008 Virtualized on top of SLES10 SP2.
The shim is shipping with sles10 sp2.
> I bought a machine with 16 cores and 128 GB of RAM.
Good for you!
> The question is: will I get the "shim" that you wrote automatically or can
> you supply  it to me?

The shim is part of the sles10 sp2 distribution. The shim will be enabled
when you install windows 2008 server using our installation tools
(virtualization manager)
> Also, when I install Windows 2008, should I use Full Virtualization or
> I mean, the Intel hardware extensions will be used or it will be
> para-  virtualized somehow?
You should select "Full Virtualization". Windows enlightening depends on
hardware virtualization support.
> Is there any measurable performance gains to either approach?
The shim expects hardware virtualization support. The shim is expected to
improve performance. In addition to the shim, you will want to get the PV
driver pack for additional I/O performance boost.  
> I am going to install SQL Server on the virtualized Windows 2008. Do you
> think that the performance hit will be substantial?

This would be a good performance test. Let us know what you see when you run
SQL server with and without the shim.
> Is Suse going to support Xen 3.2 soon? Is there any substantial
> gain between Xen 3.2 and pre-   3.2 versions.

Sles10 sp2 is based on xen 3.2. Xen 3.2 has a number of key features that
are not available in pre xen 3.2 versions.


K. Y
> Yours
> Federico Alves

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