On 07/18/2017 09:34 AM, Lentes, Bernd wrote: > > > ----- On Jul 17, 2017, at 11:51 AM, Bernd Lentes > bernd.len...@helmholtz-muenchen.de wrote: > >> Hi, >> >> i established a two node cluster with two HP servers and SLES 11 SP4. I'd >> like >> to start now with a test period. Resources are virtual machines. The vm's >> reside on a FC SAN. The SAN has two power supplies, two storage controller, >> two >> network interfaces for configuration. Each storage controller has two FC >> connectors. On each server i have one FC controller with two connectors in a >> multipath configuration. Each connector from the SAN controller inside the >> server is connected to a different storage controller from the SAN. But >> isn't a >> SAN, despite all that redundancy, a SPOF ? >> I'm asking myself if a DRBD configuration wouldn't be more redundant and high >> available. There i have two completely independent instances of the vm. >> We have one web application with a databse which is really crucial for us. >> Downtime should be maximum one or two hours, if longer we run in trouble. >> Is DRBD in conjuction with a database (MySQL or Postgres) possible ? >> >> >> Bernd >> > > Is with DRBD and Virtual Machines live migration possible ?
Yes, definitely. In the past, I've even live-migrated a VM with 24GB RAM over 10gigE very quickly, with LVM over DRBD underneath. > Bernd > > > Helmholtz Zentrum Muenchen > Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH) > Ingolstaedter Landstr. 1 > 85764 Neuherberg > www.helmholtz-muenchen.de > Aufsichtsratsvorsitzende: MinDir'in Baerbel Brumme-Bothe > Geschaeftsfuehrer: Prof. Dr. Guenther Wess, Heinrich Bassler, Dr. Alfons > Enhsen > Registergericht: Amtsgericht Muenchen HRB 6466 > USt-IdNr: DE 129521671 _______________________________________________ Users mailing list: Users@clusterlabs.org http://lists.clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
