On Tue, 17 May 2005, Paul Greidanus wrote:

> 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)
>
> 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.)

I support the idea of session migration. That would allow me to install
patches more transparently without having to kill the session !

Thierry.

 IF someone would use something like Myrinet, Infiniband, or Quadrics
> interconnect between the servers, there is a chance that they could be
> mirrored, but that would require a great deal of hacking, probably both
> with SunRay Server, and Solaris itself.
>
> --
> 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
>
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