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Re: [Xen-users] best setup for live failover

To: xen-users@xxxxxxxxxxxxxxxxxxx, Donny Brooks <dbrooks@xxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] best setup for live failover
From: Bart Coninckx <bart.coninckx@xxxxxxxxxx>
Date: Tue, 10 Aug 2010 22:04:25 +0200
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On Tuesday 10 August 2010 20:53:07 Donny Brooks wrote:
>  Also let me explain my planned roadmap. Instead of buying huge Dell T710
>  style servers with cpu, ram, and disks, from this point on I would like to
>  just have a NAS or two and then have some small 1U server that have the
>  cpu and ram to run the guests on. That is the main reason for the live
>  failover.
> > I am about to get a few extra servers and hopefully a NAS for here at
> > work. Currently all of our VM's are on one host that has a raid6 with
> > approx 12TB usable. The way I would like to set things up is to where the
> > disk images (we use lvm partitions for guest disks) sit on the NAS and
> > use something like DRBD or similar to allow live failover. We are using
> > Xen 4.0 on a Centos 5.5 Dom0 if that matters.
> >
> > So how would you recommend setting up the system to allow shared storage
> > (NAS) with live failover using lv disks? I wouldn't need to failover
> > every guest, just the primary ones like mail, web, ldap. Thanks for any
> > input.
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For DRBD you need a something to do the DRBD and you would need two NAS boxes. 
How about using your NAS as an iSCSI box?

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