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Conference iosg::all-in-1_v30

Title:*OLD* ALL-IN-1 (tm) Support Conference
Notice:Closed - See Note 4331.l to move to IOSG::ALL-IN-1
Moderator:IOSG::PYE
Created:Thu Jan 30 1992
Last Modified:Tue Jan 23 1996
Last Successful Update:Fri Jun 06 1997
Number of topics:4343
Total number of notes:18308

2655.0. "FC servers and clusters" by YUPPY::DEWINTER (Chocolate?, Yeah!) Tue May 04 1993 16:04

    Just a short question, I hope it hasn't been discussed (I couldn't find
    it anywhere), but:
    
    When you have a cluster with 6 nodes and on only two nodes in that
    cluster you run ALL-IN-1, do you have to create FC servers on ALL the
    nodes or only on the two ALL-IN-1 nodes?
    
    
    hanks for any help.
    
    Arjen
T.RTitleUserPersonal
Name		DateLines
2655.3An expanded answer :-)TINNIE::SETHIAh (-: an upside down smile from OzWed May 05 1993 00:5613
    Hi Andrew,
    
    You right it is either X  or Y type of answer I have to blame it on the
    cold morning here well everyone needs an excuse :-).
    
    What I ment was that you need to the FCS running on the nodes where you
    have ALL-IN-1 installed and not on all the nodes.  Your users will be
    connecting to the two nodes on the cluster to use ALL-IN-1, so you do
    not require it on the other nodes.
    
    Regards,
    
    Sunil
2655.5Not always so simpleCHRLIE::HUSTONWed May 05 1993 14:0237
    
    re .3
    
    It may not be quite that simple. For the non-DSO case it is as .3
    says, you only need the FCS on the nodes that are running ALL-IN-1.
    
    Where it could get a little confusing is if you have the DSO installed
    on your cluster, and remote users have named the drawers by cluster
    alias, or a non-ALL-IN-1 node. The two cases are different:
    
    Drawers named via cluster alias:
    
    	In this case when the FCS is requested to get info on the drawer
    	(talking about on the remote system now), the FCS will notice that
    	it does not serve the drawer on cluster XXX, and will broker to
    	XXX::"73=". If XXX is a cluster alias, the exact node to connect
    	to is decided by DECnet, in which case, if all the nodes are
    	enabled for incoming connects, you could connect to any of them.
    	There are two ways around this: 1) Don't use cluster alias as 
    	the partition name when creating a drawer, use the real node 
    	name you want and make sure it is one of the nodes that runs
    	ALL-IN-1. 2) Only have those nodes that are running ALL-IN-1
    	enabled for incoming connects.
    
    Drawers (ok partitions) named as the node not running ALL-IN-1.
    
    	Well if this happens, the drawer create would fail miserably and
    	the user would be told FCS is not available. To get around this
    	either use cluster alias (and see above) or don't use the 
    	non ALL-IN-1 nodes as partition names.
    
    If you are not on the net, other than your cluster, and there will not
    be a DSO installed, then as .3 says, you only need the fCS started
    on the nodes that are running ALL-IN-1.
    
    --bob