Re: [Xen-users] iSCSI and LVM

[Jonathan Tripathy <jonnyt@xxxxxxxxxxx>]

On 14/06/10 23:47, Jonathan Tripathy wrote:
> On 14/06/10 23:15, jpp@xxxxxxxxxxxxxxxxxx wrote:
> > > What is generally used in industry? At max capacity, my setup will hold
> > > up to 672 DomUs spread over 6 Xen hosts (And 3 RAID10 arrays on a 
> > > single
> > > storage server), so clearly management is a big concern. This is 
> > > where I
> > > feel that LVM/iSCSI based access is easier?
> > Hello,
> >
> > I doubt that a single storage server should be able to "feed" so many
> > VMs, even if they are not IO hungry, the network bandwidth would be very
> > high and you will have to use very high speed network devices and
> > routers/switches and a big SAN with many high speed links.
> >
> > Regards
> >
> > JPP
> Well each VM on the low package was going to be limited to 1Mbp/s max, 
> and the total setup would be connected to a 100Mbp/s connection. Of 
> course, I could always ditch the idea of the low package and just 
> offer the 2nd and 3rd packages (168 and 84 VMs respectively). You 
> really think that there would be a big bottleneck will the low package 
> (672 VMs)? Even with 3 RAID10 arrays covering them?
I should also mention that the Ethernet link between the storage server 
is as follows: Quad port bonded gigabit NIC from storage server to 
switch, then dual port bonded gigabit NIC from switch to each host.
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