Vista - Virtual server versus virtual pc - what is the relationship

Hi folks.
i am trying to create a testing platform for windows clustering. I have
already installed 3 VM by virtual pc 2007.
than i found excellent sources regarding my task - testing of cluster on
Virtual Server 2005.
When I tried to install Virtual PC 2005, it stopped with a message: virtual
pc is already running.
Here I have few questions:
1. What is the relation between virtual pc 2007 and virtual server 2005?
is Virt. pc 'newer' implementation of Virt. server?
2. Can i still have both installed on the same local pc?

On Mon, 1 Dec 2008 12:38:03 -0800, Gene.
<Gene@xxxxxx> wrote:
Sort of, VPC2007 SP1 is a newer release and VPC and VS are based on
the same core, see below, but they are 2 different products designed
to target different markets (VPC--shared folders, drag and drop,
dynamic window resizing, etc for developers, testers, qa:::VS--runs as
a service, headless for admins, server consolidations, and so on.)
They share a lot of common components (drivers, services, etc.). You
need to shutdown either of them if you plan on installing the other
Yes, they will both run just fine together on the same server, even
simultaneously (except for installation)

--
Cheers,
Steve Jain, Virtual Machine MVP
http://vpc.essjae.com/

Steve, may be you are aware of why we are running into io problems with using
VPC 2007. see my previous post.
All was so carefully designed and so far is going ashtray. Disk io is so
bad. but you won't notice it by openning files. Only by running specialized
io tests or intensive db application.

"Steve Jain [MVP]" wrote:

On Mon, 1 Dec 2008 13:08:10 -0800, Gene.
<Gene@xxxxxx> wrote:If you are going to install a very disk intensive system like a
database server on your virtual machine then one of the biggest
performance enhancers is to set aside a separate physical disk drive
on the host to store the virtual hard disk file on. Make sure that the
extra physical drive has its own controller too so there won't be
clashes and wait states on the bus cable.
Additionally in order not to have double fragmentation (both on host
for the vhd file and on the guest for the emulated drive itself) you
should probably not go for a dynamically expanding virtual disk. A
fixed size VHD file will be *BIG*, but will not change on the host
after creation.
Essentially, if you just put the VHD file on this hard disk and
nothing at all else, you optimize the performance disk-wise on the
virtual machine.

Next of course *lots* of RAM is also helping performance. Set aside as
much as you can for the guest.

Finally hardware virtualization if properly implemented in the host
system BIOS will also enhance performance (must be switched on in the
BIOS and then after a complete host system shutdown (power off)
enabled in the VPC settings.

--

Bo Berglund (Sweden)

I actually mean something which does not relate to general disk performance
improvement technics.
I use 5 independent mirrored pairs for this configuration. it performs great
on server 2003 without any VPC.
Here I see a problem with basic io operations - not disk expensions, not
lack of ram or cpu. The same disk accessed from host OS runs great.
It is something wrong with VPC layer affecting very negatively disk io.



"Bo Berglund" wrote: