Re: KVM Host Disk Performance

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On Wed, 6 Apr 2011, Jussi Hirvi wrote:

> On 5.4.2011 21.49, compdoc wrote:
>> For reasons of speed and ease of maintenance and backups, what I've settled
>> on is: a small separate drive for the host to boot from, a small separate
>> drive for the guest OSes (I like using qcow2 on WD Raptors), and then a
>> large array on a raid controller for storage which the guests and host can
>> share access to.
>
> Aren't the guests and host then competing for that large array? How is
> this arrangement better than other setups, for example having the host &
> each guest (with their associated data) each on their own disk, or
> partition?

Doesn't it feel a bit wrong to be tying physical infrastructure to VMs in that
way?  I'd have thought the large iSCSI device providing storage (not all
necessarily identical) to a Virtual Server that then slices and dices
appropriately to VMs seems a lot more sane.

jh
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