----- 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 ? 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