I'm confused

Discussion in 'File Systems' started by Tom Mason, Dec 9, 2008.

  1. Tom Mason

    Tom Mason Guest

    I'm not sure what to do here. I've got three servers hosting my DFS
    namespaces. They all have the same data (hopefully) and we use them for high
    availability and data backup purposes.

    Should I define the DFS namespaces and replication on all three servers,
    using the DFS Management snap-in, or can I just define them on one server?

    Tom

    --
    ASUS A8N32-SLI Deluxe MB
    AMD Athlon 64 X2 CPU 4800+
    4GB RAM
    nVidia GeForce 8500 GT Video
    250 GB SATA II hard drive
    Pinnacle PCTV 7010iX TV Tuner
     
    Tom Mason, Dec 9, 2008
    #1
    1. Advertisements

  2. Tom Mason

    Marcin Guest

    Tom,
    Based on you description, it appears that you have three namespace servers
    (i.e. three servers hosting DFS root) - is this correct? If so, how did you
    make this determinatiion? If that was the case, you should be able to simply
    point to the namespace they host via "Add Namespaces to Display" in the DFS
    Management console - without the need to define them.
    Once the namespace appears in the console, you can manage its behavior on
    all servers that form the DFS hierarchy (note that the replication can be
    managed only on the folder level)

    hth
    Marcin
     
    Marcin, Dec 9, 2008
    #2
    1. Advertisements

  3. Tom Mason

    DaveMills Guest

    On one because the system replicates the DFSRoot to all the DFS servers.

    BUT you should not have ANY data in the DFS root, only folders and links within
    the folders. The links point to the actual server location that house the data.
    This may be a share on the same server. For example I may have DFSRoot on
    ServerA and a data folder also on ServerA shared as \\ServerA\Data$. Then in the
    DFS console and may add a folder called "data" in the root and add a link to the
    real data share.

    In the console I create a DFSRoot folder called say DFSRoot
    Then I add a folder called "Data" in the DFSRoot
    Now I link the Data folder to ServerA\Data$
    (or it could be to ServerX\Data$)

    Now my client sees \\domain\dfsroot\data and when he opens it sees the contents
    of \\ServerA\Data$ (or ServerX\Data$)

    The data does not actually reside in the DFS root. So now I buy ServerB which
    has massive performance and a TBit data connection <grin>. All I need to do is
    copy the data from ServerA\Data$ to a new share ServerB\FasterData$ say. Then
    redefine the link in DFS. The client still sees \\domain\dfsroot\data but now is
    being directed to ServerB\Fasterdata$ and is very happy that the data can be
    accessed so much faster.

    The real benefits are from the ability to move data from one server to the other
    with no need to reconfigure the clients. If you have many targets you can move
    the data to many different servers and spread the load without any requirement
    to reconfigure the clients.

    In addition you can set up multiple targets and enable replication between them.
    However each set of links can have its own replication group and be configured
    independently of each other.

    So UserHome may be replicated on 3 servers while Public is replicated on 5
    servers. All to suit you network topology and server resources.

    The way you have it you have almost no control and in addition will need to bay
    great attention to the limits on the DFSRoot folder for the number of files and
    folders it can support.
     
    DaveMills, Dec 9, 2008
    #3
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.