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Re: [Xen-users] Best practice to backup dom0 and all domU's

To: Stefan de Konink <skinkie@xxxxxxxxx>
Subject: Re: [Xen-users] Best practice to backup dom0 and all domU's
From: Rudi Ahlers <Rudi@xxxxxxxxxxx>
Date: Tue, 25 Mar 2008 14:33:04 +0200
Cc: Darren <ubutux@xxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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Stefan de Konink wrote:
On Tue, 25 Mar 2008, Rudi Ahlers wrote:

Stefan, you may have a spare server in the office for this, but in a
hosting environment, you have to pay for every server you want, and I
have to be honest with you, it's cheaper to buy 200GB FTP space, than
another server JUST for backups. And I don't see why any host who
doesn't offer / use iSCSI should suddenly start offering it just cause
OpenSolaris is free. Cause what you say is to have an iSCSI server with
the VM's on, and then backup that server, so that means you'd need 3
physical servers

OpenSolaris isn't the answer to everything.

I'm a contracter for a company that is in the same situation. And having a
storage infrastructure is something you get customers with, usually not
loose. But all depends on how big you are. I think 24 Xen servers with one
fileserver is not a bad ratio. 1:1 is...

Stefan


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Yes, I understand what you're saying.

But, let's say you offer the following VPS options:
1. 512MB RAM / 10GB space
2. 1024MB RAM / 20GB space.

Then, on a dual Xeon (4 cores) with 16GB RAM, you could have 15 / 30 VPS' per physical server. So, you suggest have a iSCSI server, and back that up, which means you need 3 physical servers to host the same 20 VPS' - which doesn't make sense. There should be a better way to backup the VPS' directly from the main server, to the FTP server, which is 1/4 the price of a physical server in most cases

--

Kind Regards
Rudi Ahlers
CEO, SoftDux

Web:   http://www.SoftDux.com
Check out my technical blog, http://blog.softdux.com for Linux or other 
technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stugg


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