home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.os.vms
- Path: sparky!uunet!cs.utexas.edu!wupost!spool.mu.edu!agate!linus!philabs!crpmks!billb
- From: billb@crpmks.uucp (Bill Bochnik (Info Systems))
- Subject: Re: standalone vax and cluster on same CI ?
- Reply-To: billb@crpmks.UUCP (Bill Bochnik (Info Systems))
- Organization: Ciba-Geigy Corporation
- Date: Fri, 11 Sep 1992 13:04:03 GMT
- Message-ID: <1992Sep11.130403.14111@crpmks.uucp>
- References: <1992Sep10.173152.1@cc.newcastle.edu.au>
- Lines: 35
-
- In article <1992Sep10.173152.1@cc.newcastle.edu.au> sysmgra@cc.newcastle.edu.au (Ann Walters) writes:
- >Hi,
- >
- >Is anyone running a standalone VAX and a VAXcluster on the same CI?
- >
- >We currently have a three-node hetrogeneous cluster and would really prefer a
- >homogeneous cluster of two nodes and the third VAX standalone. They are
- >virtually running as two separate systems now. There are a number of reasons
- >why we want this configuration, especially since VMS version 5.5 and the
- >cluster-common queue manager software. Also, we would like to be able to
- >upgrade the system software on the two systems independently of each other. It
- >is VERY difficult to get everyone to agree to common downtime and often it is
- >not desirable to perform rolling upgrades.
- >
- >We have spoken to DEC CSC and the official line is NOT SUPPORTED - DON'T DO IT.
- >The only problems they can see arising is if both systems mount the same disks
- >and write to them. We already keep the disks separate and know which nodes are
- >to mount which. There are no common disks on the current cluster except for the
- >quorum disk which we will "give" to the standalone machine if we split up the
- >current cluster, and use another disk for the quorum disk for the new cluster
- >of two machines.
- >
-
- How are the disks connected? Are the disks for the standalone machine off of
- an HSC? Can they be moved to the machine itself? This is probably the cause
- of the problem. The HSC's should be treated as nodes in the cluster (if I
- remember correctly) and can only be members of 1 cluster. If you want that
- machine to be standalone, it should either have it's own HSC(s) or have the
- disks local to it. I hope that this helps.
-
- --
- Bill Bochnik | It's hard to be a James Bond in an Abbott
- Systems Analyst | and Costello world.
- Ciba-Geigy Corporation | Signed and sealed, they deliver oblivion.
- philabs!crpmks!billb | It's worse than that, he's dead Jim.
-