Re: running in a virtual environment

I have an 8.3.7 system running on a virtual machine hosted on Windows Server
2008 Hyper-V. I mapped virtual disks to real disks, (DAS), so that I have
two physical spindles and two virtual spindles mapped to them, one each.
Then followed normal good practices. WAL on one spindle, tables on the
other. I have a script that runs every night and backs up the enter virtual
machine.

On Fri, Aug 27, 2010 at 9:07 AM, Willy-Bas Loos <willybas(at)gmail(dot)com> wrote:

> Good question. I hear about putting WAL/indexes/tables on separate spindles
> and all that, but what if all IO is virtualized?
> I would guess that IO and OS page cache would be the main issues here.
> i haven't dared to put my db on a virtual box though, because i don't know
> what happens inside of it.
>
>
>
> On Fri, Aug 27, 2010 at 5:21 PM, David Bear <David(dot)Bear(at)asu(dot)edu> wrote:
>
>> I'm wondering what experience people have had running pg 8.x in a
>> virtualized environment. Are there any best practices to follow that
>> differen when running on a real metal? Are there performance issue? What
>> virtual environment seems most friendly to pg ? Xen, VMWare, other? What
>> about storage; is it best to keep the cluster in a filesystem that is part
>> of the vm-image or on a mounted file system that exists external to the
>> image? (in other words, a /dev/sdxx that is really some NAS type of device,
>> or NFS? CIFS?)
>>
>> --
>> David Bear
>> College of Public Programs at ASU
>> 602-494-0424
>>
>
>
>
> --
> "Patriotism is the conviction that your country is superior to all others
> because you were born in it." -- George Bernard Shaw
>