Re: [Clusters_sig] Re: [ANNOUNCE] Linux Cluster Summit 2005

From: Lars Marowsky-Bree (lmb_at_suse.de)
Date: 05/31/05

  • Next message: Pavel Machek: "[patch] switch pm_message_t to struct" 
    Date:	Tue, 31 May 2005 12:26:24 +0200
To: Robert Wipfel <rawipfel@novell.com>, davidnicol@gmail.com, phillips@redhat.com

    On 2005-05-21T09:29:01, Robert Wipfel <rawipfel@novell.com> wrote:

    > outside looking in, is web services an! d grid. Returning to the
    > reality of many vendor's enterprise* business, the suitespot for h/a
    > clusters still seems to be somewhere around ~8 dual-CPU nodes with
    > many customers deploying multiple similar clusters. Nodes are never in
    > multiple clusters at once, rather, individual nodes are members of a
    > cluster and that cluster might be a member of a cluster of clusters.

    A single node must be big enough to support sane load balancing; ie, big
    enough to run at least one (or more) "whole" resource entities / jobs.

    That is the breaking point after which it is more sensible to deploy
    more nodes - with looser coupling - than making a single node / SSI
    component larger, because decoupled operation means less complexity for
    fault isolation.

    Sincerely,
        Lars Marowsky-Brée <lmb@suse.de> 

    -- 
High Availability & Clustering
SUSE Labs, Research and Development
SUSE LINUX Products GmbH - A Novell Business	 -- Charles Darwin
"Ignorance more frequently begets confidence than does knowledge"
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