Hi, On Wed, May 13, 2009 at 04:39:36PM +0100, darren.mans...@opengi.co.uk wrote: > > > > Hi, > > > > On Wed, May 13, 2009 at 03:57:27PM +0200, Peter Kruse wrote: > > > Hello, > > > > > > Dejan Muhamedagic wrote: > > > > I tried to list all devices which manage host's power and may be > > > > used for fencing. I also tried to describe their deficiencies. > > > > None of the devices are "recommended" really as that depends on > > > > particular circumstances. > > > > > > I mean "recommended" in the sense that it really works. The only > > > device mentioned here by Karl Katzke is the battery backed up > > > RAC device by Dell, that probably fulfills the requirements. > > > > Just read about it. Indeed, with a battery, lights-out devices > > should be just fine. That's good news that hw vendors start using > > batteries for this kind of equipment. I guess that the battery > > doesn't even have to be very big. > > > > Thanks, > > > > Dejan > > > > Would 2 nodes with dual redundant power supplies fed off 2 separate > power feeds to each be a good STONITH recommendation using the ILO/RSA > STONITH agents?
Yes, if there's no possibility that a single power failure can bring down one node including its mgmt device (ILO/RSA). I'm not sure what "2 separate power feeds" means: separate to two nodes or to redundant power supplies. I'd prefer the latter. It also makes more sense, fencing or no fencing. Of course, redundant power supplies is a good idea in any case. The more robust your nodes, the more robust the cluster. Thanks, Dejan _______________________________________________ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
