[AccessD] OT: Virtual PC 2007 (MS), CITRIX XenServer, CITRIX HDX...

Shamil Salakhetdinov shamil at smsconsulting.spb.ru
Mon Sep 21 08:44:14 CDT 2009


Hi John and Stuart,

I do not plan to keep production and large test databases on my VPC
therefore virtual HDD expanding feature would be useful here.

--Shamil

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of jwcolby
Sent: Monday, September 21, 2009 4:58 PM
To: Access Developers discussion and problem solving
Subject: Re: [AccessD] OT: Virtual PC 2007 (MS), CITRIX XenServer, CITRIX
HDX...

Stuart,

You are correct, you can set the VM up to expand as necessary.  The
advantage is that it can start 
small and get really big if needed.  The disadvantage is that it is slow
when expanding.  Once 
expanded though it remains that size until it needs to expand again.

If you set up a fixed size, it is always as fast as it will ever be but be
unable to grow if need be.

I set up mine as a fixed size, because my machines were performing a
specific job and I knew what I 
needed.

John W. Colby
www.ColbyConsulting.com


Stuart McLachlan wrote:
> VirtualBox can either allocate all the required disk space when you first
set up a VM or  
> expand the image when required.
> 
> I made the mistake of doing the first and then trying to benchmark
building big tables in 
> Access in the VM.   It turned out to be very slow.  Creating the full
sized disk up front 
> resulted in much better results.  
> 
> I suspect that VMWare and VPC will be the same.
> 
> So if you are using the VM  to create large record sets, it will certainly
pay to allocate the full 
> space initially.
> 
> 
-- 
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