Could someone explain the benefits of NSCM sessions?

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Paul Greidanus
Sent: Tuesday, May 17, 2005 10:21 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)

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.)

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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