I would avoid this. Most of this kind of storage technology is
reliant on local CPU power. By putting it on boxes that are also doing other
work, you’re going to end up increasing the latency of the storage. Plus, I
don’t believe this scales past two boxes – centralized, dedicated SAN stuff is
pretty much crucial if you’re looking to roll out 300 VMs across 20 compute
nodes.
Best Regards,
Nathan Eisenberg
Sr. Systems Administrator - Atlas Networks, LLC
office: 206.577.3078 | suncadia: 206.210.5450
www.atlasnetworks.us | www.suncadianet.com
From:
xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Rudi Ahlers
Sent: Tuesday, February 09, 2010 4:36 AM
To: Ahmed Kamal
Cc: Peter den Hartog; xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] xen cloud - shared storage question
On Mon, Feb 8, 2010 at 1:02 PM, Ahmed Kamal <email.ahmedkamal@xxxxxxxxxxxxxx>
wrote:
The standard setups needs a
third shared storage box exposing either iscsi or NFS, if you don't want to do
any hacks
As matter of interest, with today's more powerful servers,
is it possible to setup a "shared storage box" on the cloud servers
themselves? i.e. you have 2x dual Core i7 + 12GB RAM + 4x400GB SAS HDD's, then
you setup glusterFS on both boxes and create an active-active sync
"NAS" - and the VM's run straight from there.
This, to me, sounds like a theory, and a very good one at
that. But, how does / would it work in practice?
the VM's have a direct connection to the shared
storage, and the shared storage sync between the servers on a separate GB
link.
Has anyone done this? Is it possible?
Why would I want to go this router? Simple, to save space,
energy, costs (which can be used elsewhere: marketing , sales, software, etc)
& carbon footprint. The processing power we have in one single 1U server
today is far better than what we used to get in much larger servers 3 years
ago.
--
Kind Regards
Rudi Ahlers
SoftDux
Website: http://www.SoftDux.com
Technical Blog: http://Blog.SoftDux.com
Office: 087 805 9573
Cell: 082 554 7532
|
