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From: iglesias@UCI-ICSA.ARPA (Mike Iglesias)
Newsgroups: fa.info-vax
Subject: Cluster questions
Message-ID: <8509071908.AA24035@UCB-VAX.ARPA>
Date: Sat, 7-Sep-85 01:24:56 EDT
Article-I.D.: UCB-VAX.8509071908.AA24035
Posted: Sat Sep  7 01:24:56 1985
Date-Received: Mon, 9-Sep-85 01:07:08 EDT
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Organization: The ARPA Internet
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Our VMS system manager has recently left UCI and left another person and
myself to fumble our way thru making our 780 system into a cluster with
a soon-to-arrive 785.  Here are some questions for all you cluster experts
out there:
 
   1.  Got any suggestions/warnings/words of advice/incantations/prayers
       that would be useful. (neither one of us knows a great deal about
       about VMS, but we're both experienced system mangers)
 
   2.  What we want to set up in the cluster is  this:
 
         A common user disk (we already have this on 2 RA81s)
         A sort-of-common system disk, with:

            separate SYSUAF files for each system
	    separate accounting for each system
            a common directory for FORTRAN, DCL, etc
            separate directories and appropriate protections so that
             some third party software can only be run on one of the
    	     systems (i.e. we only want the 785 users to be able to
	     run SAS, and prevent the 780 people from running it)

	 The system disk will be an RA81 also.

This setup is kinda in between a homogeneous and a heterogeneous cluster, I
guess.  Is this going to work?  The one thing that I can really figure out
is the separate directory/protection stuff to restrict software to a
specific machine, and it's one of the more important things that needs
to be done for this cluster.  Our previous manager mumbled something about
access control lists before strolling out the door, so I'll have to look
into that.  One other thing, people who will be authorized to log on to
either system will have the same UIC, etc. since there will be a common
user disk.

Words of encouragement, "Good luck, you're going to need it"'s, "I've been
there too"'s, etc are welcome, as is any advice.

Thanks,

Mike Iglesias
University of California, Irvine
iglesias@uci-icsa.arpa