File Server Active/Passive to Active/Active

Discussion in 'Clustering' started by Eric Woodland, Dec 1, 2005.

  1. All-

    Here is our current scenario:

    W2K3FS01A-Node A - Active
    W2K3FS01B-Nobe B - Passive

    Cluster Group Configuration:
    [Cluster Group]
    Contents: IP Address (1)
    Network Name (1)
    Physical Disks (3) Quorum, VOL1, VOL2 [Attached from the SAN]

    The issue is this:

    This cluster was implemented by an employee who is no longer with our
    company. Long story short, W2K3FS01A is our active node. It is servicing ALL
    requests for our user home directories AND departmental shared data. It is
    running between 95-100% utilization continuously all day long.
    What I would like to do:
    Create an Active/Active cluster with W2K3FS01A & W2K3FS01B distributing the
    load evenly. I would also like to add a third server as a passive node that
    can handle the load if A or B fail over.

    How can I migrate from this Active/Passive to an Active/Active cluster?

    Thanks MUCH in advance,

    Woody
     
    Eric Woodland, Dec 1, 2005
    #1
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  2. Ok, you can do this. Add the third node. Make sure it's the exact same
    hardware, BIOS, firmware, configuration, etc. Join it to the cluster.

    Create a new group within the cluster. Create a new IP Address resource,
    Network Name resource, and move VOL2 and it's shared resource into that new
    group. Move this group to node B :)

    Those are the simple steps, if you need more just ask :)

    Cheers,

    Rod

    MVP - Windows Server - Clustering
    http://www.nw-america.com - Clustering Website
    http://www.msmvps.com/clustering - Blog
    http://www.clusterhelp.com - Cluster Training
     
    Rodney R. Fournier [MVP], Dec 2, 2005
    #2
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  3. Eric Woodland

    MarkFox Guest

    Eric,

    You may also want to try to identify what is causing the high CPU. If you
    are running Antivirus or some other third party app, this may be causing the
    problem. We had an instance on two Win2k clusters that were running an
    older version of NAV with no problems for years, then suddenly the access to
    the group and file shares was crawling. We turned off Real Time File
    Protection and the problem went away. It looks like a new definition file or
    scan engine may have caused the problem. Not sure how many shares/users you
    have but we have approx 3000 shares on each 2 node cluster running
    active/passive and response is fine. I would hate to see you go through all
    the work to build and add a third cluster node just to find you may still
    have the same problem.
     
    MarkFox, Dec 2, 2005
    #3
  4. Rod,

    The main concern is that we do not want to add an additional network name.
    Higher-ups would prefer to keep the same namespace W2K3FS01 and divide the
    traffic up between 2 nodes. Is this possible?

    Thx,

    Woody

     
    Eric Woodland, Dec 2, 2005
    #4
  5. Same Network Name, same group. Same group, same Node. Same Node, same old
    problem. Change is required :)

    Ask management if they want it fixed or not?

    Cheers,

    Rod

    MVP - Windows Server - Clustering
    http://www.nw-america.com - Clustering Website
    http://www.msmvps.com/clustering - Blog
    http://www.clusterhelp.com - Cluster Training


     
    Rodney R. Fournier [MVP], Dec 2, 2005
    #5
  6. Rod-

    The only other solution to this problem would be to create a DFS root and
    direct it at the separate shares on each node, correct? We aren't at a level
    where that is feasible yet, so i'll have to discuss the option of a second
    network name. Thanks for the quick response, they're breathing down my neck
    over here!

    Woody

     
    Eric Woodland, Dec 2, 2005
    #6
  7. DFS Domain Root can be shared on the non-clustered computers. Works great.
    Stand-alone DFS is cluster aware.

    I know how you feel, they are always breathing down my neck - I can't sleep
    the clowns will eat me!

    Cheers,

    Rod

    MVP - Windows Server - Clustering
    http://www.nw-america.com - Clustering Website
    http://msmvps.com/clustering - Blog
    http://www.clusterhelp.com - Cluster Training

     
    Rodney R. Fournier [MVP], Dec 2, 2005
    #7
  8. Rod,

    Here is what I am thinking of implementing:

    [W2K3FS01]
    // \\
    [DFSROOT-USERS] [DFSROOT-DEPTDATA]
    [W2K3FS01A]
    [W2K3FS01B]
    F:\:Users
    G:\Dept
    [W2K3FS01C]
    Passive-Failover Node

    My only issue is that if the bridehead fails, there is no redundancy for it
    to failover with. Is it possible to NLB or Cluster the server holding the DFS
    root?

    Also, when the client is redirected to the file share on W2K3FS01A/B will
    the traffic between the client make a path from W2K3FS01 => W2K3FS01A or is
    there a redirect that sends them directly to W2K3FS01A and that's it.

    If you have a minute, could you give me a ring? Email me @


    Thanks!

    Woody

    In this scenario the 'bridgehead' W2K3FS01 will store 2 DFS roots. Each will
    point to their respective node hosting USER or DEPT data.
     
    Eric Woodland, Dec 5, 2005
    #8
  9. DFS Stand Alone is Cluster aware. DFS Domain Root already can be replicated
    around the domain and is site aware. What you have layed out is not bad,
    just replicate it to another server :) ( [DFSROOT-USERS] &
    [DFSROOT-DEPTDATA])

    Cheers,

    Rod

    MVP - Windows Server - Clustering
    http://www.nw-america.com - Clustering Website
    http://msmvps.com/clustering - Blog
    http://www.clusterhelp.com - Cluster Training
     
    Rodney R. Fournier [MVP], Dec 9, 2005
    #9
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