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April 2004, Week 3

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Subject:
Re: OT Cluster up time acheivement
From:
Robert Mills <[log in to unmask]>
Reply To:
Robert Mills <[log in to unmask]>
Date:
Tue, 20 Apr 2004 10:36:03 +0100
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I have spent some time considering this posting and how I was going to reply to it. My quandary was not 'what to say' but 'how to say it' without upsetting somebody. I eventually decided that 'to make an omelette you have to break some eggs' so here goes.

AFAIKR as long as one of the nodes is up and running then you are going to keep the cluster uptime alive. If it was a two node cluster then I would be impressed but if it was a 10+ node cluster then it's what I would expect to see.

A previous employer of mine had an 8 node VAX cluster that was started in August 1990. The last time I spoke to one of the programmers there, in December 1997, it was still running. This was not considered unusual.

So I have to ask Chuck/Jan, This is what you should expect from a cluster. Why make a such a big deal about it????

regards,

Robert W.Mills
Systems Development Manager
Windsong Services
(01689) 870622 x3005


HP-3000 Systems Discussion <mailto:[log in to unmask]> wrote on :

> To all,
> 
> Just an FYI that one of our HP brethern, albeit running a OpenVMS
> cluster, has reported
> a cluster up time of over 7 YEARS.  This is going to be presented at
> the EMEA conference
> in Munich the first week of May.
> 
> From the HP ITRC... contributed by Jan van den Ende.  Way to go Jan...
> 
> AMLVMS$ Write sys$ouput f$getsyi("cluster_ftime")
> 13-APR-1997 11:35:50.75
> 
> CET DST ~ GMT + 2:00:00.
> 
> Yes, this means the OpenVMS cluster uptime has reached seven years
> today, at 9:35 GMT.
> 
> May 5, at the ENSA/Interex Symposium in Muenchen, Anton van
> Ruitenbeek and myself will be
> presenting it as a case study.
> 
> 
> Chuck Ciesinski
> Hughes Network Systems
> 11717 Exploration Lane
> Germantown, MD  20876
> p  301 601 2608
> f   301 601 6303
> email  [log in to unmask]
> "The joy of life is living it..."  unknown
> 
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