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Old 02-12-2009   #4 (permalink)
Geoff N. Hiten


 
 

Re: Defrag from the guest OS: does it make sense?

It is aware when it is running in a VM environment and adjusts its behavior.

You have to run it inside the VM and in the host to get full advantage. It
does not breack the VM boundary.

--
Geoff N. Hiten
Principal SQL Infrastructure Consultant
Microsoft SQL Server MVP




"Bo Berglund" <boberglund@xxxxxx> wrote in message
news:lb59p4hk2e3uqb8m8mh4m7ukhabgemquto@xxxxxx
Quote:

> On Thu, 12 Feb 2009 15:38:44 -0500, "Geoff N. Hiten"
> <SQLCraftsman@xxxxxx> wrote:
>
Quote:

>>Actually the newest versions of DiskKeeper are VM aware and can defragment
>>internally and externally. I am not aware of any other VM aware (Hyper-V)
>>defragment utilities.
>
> VM or VHD aware? Makes a big difference.
> If a program on the host can break into a virtual machine and do
> low-level disk management then we have a no-isolation situation and a
> good point for exploits to use.
> I thought that a virtual computer was basically totally isolated from
> the host with exception of any networking interface....
>
> --
>
> Bo Berglund (Sweden)
My System SpecsSystem Spec