Re: [Xen-users] Xen storage, Server with iSCSI or dedicated SAN?

[Simon Capstick <simon@xxxxxxxxxxxxxxxx>]

Ivan Porro wrote:
> Hi all,
>
> I'm trying to configuring a setup where I will have 1 DELL PE1950 with 2 
> QC Xeon 5335, 8GB ram and a HP DL380G3 with 2 Xeon 3GHz and 2GB ram and 
> Xen OSS or XenExpress v4, hosting RHEL4 and Windows VMs.
> The problem is on the storage side. Since I'm really low on budget, I've 
> to skip fiber channel and go for one of this two reasonable iSCSI options:
> 1)
> SAN solution:  with a DELL/EMC2 AX150 iSCSI, single controller
>
> 2)
> NAS solution:  another server, a PE2950 configured with 2 QC Xeon 5320, 
> 8GB ram and Xeon OSS or XenExpress v4 again, acting as a iSCSI target 
> for himself and the other server. It will host also a LTO2 backup 
> library, probably DELL PV124T
>
> What are the real performance benefits of the SAN in this case? The SAN 
> was intended to be not entirely dedicated to XEN.  If I go for a server 
> based SAN, it will (directly or via a VM) provide storage via NFS/SAMBA 
> to other hosts
> Well, of course, you may have also option (3) and (4)... that probably I 
> missed... any help is appreciated
> thank you in advance
>
>     ivan
You might want to check whether you can even export and import the same 
iSCSI target on the same box.
Simon

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