I can't think of any Volume Manager that would let you mirror disks from 2 separate VGs... I know Veritas won't let you, unless they've changed something in the last version or 2... But other than that I wouldn't see why you couldn't use 2 different fabrics, they're just disks to LVM... If you're having trouble managing 200+ PVs, just build the LV first using only disks from 1 fabric, then make the second fabric available/visible, and add a mirror using only those disks... I think that would work... <div>On 12/20/06, <a href="mailto:mathias.herzog@postfinance.ch">mathias.herzog@postfinance.ch</a> <<a href="mailto:mathias.herzog@postfinance.ch">mathias.herzog@postfinance.ch </a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi, Using lvm2, I would like to mirror a logical volume between two different SAN fabrics to guarantee high availability for my data, even if a whole SAN fabric crashes. Is there a possibility in lvm2 to define two volume groups, put the disks from fabric1 into group 1 and the disks from fabric2 into group 2 and then create the mirror over the two groups? I didn't find much documentation for lvm2 about this, I just know that other Volume Managers can handle it. It's essential to group the discs together because I use like 100 discs for each mirror and I have to be sure that mirroring takes place between the two different SAN storages. Mathias Sicherheitshinweis: Dieses E-Mail von PostFinance ist signiert. Weitere Informationen finden Sie unter: <a href="https://www.postfinance.ch/e-signature">https://www.postfinance.ch/e-signature</a>. Geben Sie Ihre Sicherheitselemente niemals Dritten bekannt. _______________________________________________ linux-lvm mailing list <a href="mailto:linux-lvm@redhat.com">linux-lvm@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/linux-lvm">https://www.redhat.com/mailman/listinfo/linux-lvm</a> read the LVM HOW-TO at <a href="http://tldp.org/HOWTO/LVM-HOWTO/"> http://tldp.org/HOWTO/LVM-HOWTO/</a> </blockquote></div>