Domino Clusters

Friday 15th April, 2005
I'm currently making some major changes to our UK Domino infrastructure. A newer, more powerful, primary server is being introduced and all server being upgraded from Windows 2000 to Windows 2003.

Our Windows admins seemed a little surprised at how I'm going about upgrading our mail cluster. I don't have to take it all off-line, break it all, upgrade, rebuilt etc. and then bring it all back online. I simply build the new box, Win2003 and Domino 6.5.4 and add it into the existing cluster. What? 3 nodes in a cluster...oh yes. Then I take one of the existing nodes out of the cluster, off-line and rebuild. Add it back into the cluster and we're all done.

All this time, users have a primary server and a failover in the (very unlikely) event of a failure. Do that with Exchange!

  1. 1) Eric Parsons Said: (15/04/2005 19:47:00 GMT) Gravatar Image
    So simple

    I am forever amazed at Domino simplicity.

    I never really put a thought to it, but I don't think there is any other major email system that could do that.

  2. 2) Eric Parsons Said: (15/04/2005 19:49:06 GMT) Gravatar Image
    Domino Clusters

    I am always amazed at Domino simplicity.

  3. 3) Josef Said: (18/04/2005 08:29:05 GMT) Gravatar Image
    Domino Clusters

    Hi there,

    any special reason to run Domino on Windows? If these are standalone boxes then Linux might be just the right OS to try.

  4. 4) Ben Rose Said: (18/04/2005 08:50:32 GMT) Gravatar Image
    Domino Clusters

    1) Domino is developed on Win32 and ported to other platforms so generally suffers from less bugs (in Domino...not the OS)

    2) I understand Windows a lot more and it's therefore faster for me to build (and re-build) a Windows server when performing maintenance.

    3) Our servers come with pre-scripted installs for Windows. The time saved in hunting down drivers to make NIC's, RAID controllers etc. work under Linux is saved.

    4) Whist Linux is regarded as more secure etc. I wouldn't know where to start to ensure Linux really was secure and had all the required patches. In my past experience (Slackware 1.2 2.x) Linux was not easy to upgrade or patch at all. Windows, whilst it needs patching more often, usually just requires a quick windows update and a reboot.

    5) I believe, in an environment of trained Windows admins the TCO of Windows to be lower.

    6) As I have Windows admin skills myself, I can deploy new servers without assistance from a platform specialist.

    These are the kind of reasons I deploy on a Windows platform.

  5. 5) IT Service Team Said: (21/04/2005 17:00:33 GMT) Gravatar Image
    Domino Clusters

    Are you having a laugh!!!

  6. 6) Ben Rose Said: (21/04/2005 17:19:20 GMT) Gravatar Image
    Domino Clusters

    What my semi-anonymous colleague is trying to point out is the abundance of support calls he had to answer this week as a multitude of users lost all of their unread marks during the server change. Some also refused to failover at all as the client side cluster.ncf refused to update in time.

    As discussed with ex-Lotus developer Damien Katz over at Ed's blog { Link } it's a fact that unread marks should work properly, but still don't. It kinda sucks that an enterprise level product lets us down in such a visible area.

    Incidentally, just how often does cluster.ncf refresh?

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