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Better Support for Stretched Cluster Deployments (for Resilience)

Currently Domino clusters do not support the concept of "better" servers for a specific client. As stated in Clustering over a wide area network the user might end up connecting to (and being stuck with) an inferior location and suffer from network penalties.

The solution should support the concept that "better" might change over time (user being in office or deployed in the field; maintenance shutdowns; performance problems ...).

  • Guest
  • Sep 11 2018
  • Under Consideration
  • Attach files
  • Guest commented
    18 Sep, 2018 12:32pm

    Using Location documents and standalone servers will allow the users to
    connect to the "best" Server. Mail delivery on the other hand is tied to
    the users home server.

    In a failover situation the user will not receive any emails until his
    home server becomes available again.
    At a remote location the user has to wait until the emails are replicated
    from the users home server even when the mails are originating from the
    local server.

    As far as I can see Panagenda's MarvelClient configuration is more
    directed to the configuration of the notes client and does not do much
    with the "Mail Server" entry in the public addressbook.

  • Admin
    Thomas Hampel commented
    18 Sep, 2018 11:17am

    The Notes client is searching for the next available server hosting a replica of the database. Beside the cluster lookup, Notes will also use the catalog server (or Home server) listed in the Location document. If you don't want clients to fail over, consider using two standalone servers rather than a cluster. If you want your clients to connect to the next available server, consider using Panagenda's MarvelClient configuration capabilities. It can configure the client based on its network location.