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From: SYSMGR%UK.AC.KCL.PH.IPG@AC.UK.UUCP
Newsgroups: mod.computers.vax
Subject: Local-Area VAXclusters
Message-ID: <8702050223.AA26666@ucbvax.Berkeley.EDU>
Date: Wed, 4-Feb-87 21:25:22 EST
Article-I.D.: ucbvax.8702050223.AA26666
Posted: Wed Feb  4 21:25:22 1987
Date-Received: Sat, 7-Feb-87 09:56:09 EST
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I wonder if anyone could answer these queries:
 
(1) Do you HAVE to run all the LAVC nodes off a common system disc at the
    boot node, or can you run a system disc local to the node and use
    cluster functionality simply to allow a set of user discs to be accessed
    efficiently and identically from any node? (I know that this inhomogeneous
    arrangement is possible with ordinary CI clusters)
 
(2) If so, can you mount non-DEC discs cluster-wide, even if they aren't MSCP
    driven? (Again, I know this is possible on a CI cluster)
 
(3) Given a systems industries 9900 disc system, which looks like a set of
    dual- (actually multi-) ported RM type discs, could you share these
    between multiple microVAXen by telling VMS that they are dual-ported?
    (SI say yes). Do you actually need the LAVC license to do this, or does
    microVMS 4.5 itself contain the distributed lock manager? Does anyone out
    there have any experience of this configuration? (Yet again I know it
    works for big VAXen with vanilla VMS)
 
(4) If you use a fully-DEC LAVC with an RD54/MicroVAX boot node, can you
    really support four more nodes? DEC say you can, I find it a bit hard
    to believe...
 
        Thanks in advance for any replies.
 
Nigel Arnot (Dept. Physics, Kings college, Univ. of London;  U.K)
 
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