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Thread: Very slow connection to a drive mapped to domain DFS root

  1. #1
    agcastle2000 Guest

    Very slow connection to a drive mapped to domain DFS root

    Hi,

    Our Domain DFS root \\corp.domain.com\globalshare is mapped to z: drive.

    These are the issues that our users have experienced lately:
    1. The line net use z: \\corp.domain.com\globalshare freezes when login.bat
    script runs at login.
    2. - Opening files from z: drive or saving files to z: drive is taking very
    long time and sometimes hang. If the user go through My Network Places and
    open the files, everything works without any issue. There is no issue as well
    when NetBIOS name is used in the mapping like net use y:
    \\dfs-server\globalshare

    This could be DNS related but I have a good response when doing nslookup to
    \\corp.contoso.com\globalshare.

    Also, I can't see anything from the results of dfsutil.


    Please help.


    Regards,
    Archie

  2. #2
    Jorge Silva Guest

    Re: Very slow connection to a drive mapped to domain DFS root

    Hi
    which DNs server are the clients using?

    --
    I hope that the information above helps you

    Good Luck
    Jorge Silva
    MCSA
    Systems Administrator
    "agcastle2000" <agcastle2000@discussions.microsoft.com> wrote in message
    news:C44A876A-0449-4608-B318-C74459B83F1E@microsoft.com...
    > Hi,
    >
    > Our Domain DFS root \\corp.domain.com\globalshare is mapped to z: drive.
    >
    > These are the issues that our users have experienced lately:
    > 1. The line net use z: \\corp.domain.com\globalshare freezes when
    > login.bat
    > script runs at login.
    > 2. - Opening files from z: drive or saving files to z: drive is taking
    > very
    > long time and sometimes hang. If the user go through My Network Places and
    > open the files, everything works without any issue. There is no issue as
    > well
    > when NetBIOS name is used in the mapping like net use y:
    > \\dfs-server\globalshare
    >
    > This could be DNS related but I have a good response when doing nslookup
    > to
    > \\corp.contoso.com\globalshare.
    >
    > Also, I can't see anything from the results of dfsutil.
    >
    >
    > Please help.
    >
    >
    > Regards,
    > Archie




  3. #3
    Kevin D. Goodknecht Sr. [MVP] Guest

    Re: Very slow connection to a drive mapped to domain DFS root

    agcastle2000 wrote:
    > Hi,
    >
    > Our Domain DFS root \\corp.domain.com\globalshare is mapped to z:
    > drive.
    >
    > These are the issues that our users have experienced lately:
    > 1. The line net use z: \\corp.domain.com\globalshare freezes when
    > login.bat script runs at login.
    > 2. - Opening files from z: drive or saving files to z: drive is
    > taking very long time and sometimes hang. If the user go through My
    > Network Places and open the files, everything works without any
    > issue. There is no issue as well when NetBIOS name is used in the
    > mapping like net use y: \\dfs-server\globalshare
    >
    > This could be DNS related but I have a good response when doing
    > nslookup to \\corp.contoso.com\globalshare.
    >
    > Also, I can't see anything from the results of dfsutil.


    If your internal domain "corp.domain.com" is in the same DNS namespace as
    your public domain "domain.com" this could very well be a wildcard in the
    public domain causing this issue when the DNS client service appends
    domain.com to the name e.g. "corp.domain.com.domain.com". As a quick fix add
    a trailing "." after the domain name in the drive mapping, e.g. net use z:
    \\corp.domain.com.\globalshare will stop the DNS client from appending
    suffixes,

    A more permanent fix is to remove domain.com from the DNS suffix search list
    on all clients.

    --
    Best regards,
    Kevin D. Goodknecht Sr. [MVP]
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