> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Paul Greidanus > Sent: Tuesday, May 17, 2005 9:21 AM > To: SunRay-Users mailing list > Subject: Re: [SunRay-Users] Sun Ray Server 3.0 > > > Smith, Gina wrote: > > I am asking a question that I am not sure how to ask, so please bare > > with me. I am running Sun Ray Server 3.0 on a primary and secondary > > server. If I am logged into the primary server and it dies, is there a > > way to switch over to secondary without the user noticing any change??? > > > Not with the current setup, that would require mirrored memory between > the machines. Users will get logged out, but they will be able to log > in very quiclly (5 seconds or so worst case) >
Note that it is possible to build/configure a Sun server to be 'very reliable' and close to highly available to eliminate single points of failure: - multiple cpu boards + memory - multiple power supplies - raided disk systems - multiple nics connected to a redundant network infrastructure. (I built one of these using older Enterprise Servers and SRS2.0) Then, depending on the specific area of failure, the server will stay up and you can fix that hardware... The extra hardware of course costs more $, but it is the only viable option until there is session migration, which is a computer science project... DaveR > I've heard some talk about a desire to have a migratable session, where > the user's session can be copied, not in real time, to another sunray > server, so an administrator can take the machine down without any > session loss (users would be disconnected for a few minutes however.) > > -- > Paul Greidanus > CAD Administrator / Systems Administrator > Center of Excellence in Integrated Nanotools University of Alberta > [EMAIL PROTECTED] 780-492-7368 > http://www.cein.ualberta.ca > > _______________________________________________ > SunRay-Users mailing list > [email protected] > http://www.filibeto.org/mailman/listinfo/sunray-users _______________________________________________ SunRay-Users mailing list [email protected] http://www.filibeto.org/mailman/listinfo/sunray-users
