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@ -15,6 +15,11 @@
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may occur:
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</para>
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<indexterm><primary>PDC</primary></indexterm>
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<indexterm><primary>network bandwidth</primary><secondary>utilization</secondary></indexterm>
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<indexterm><primary>BDC</primary></indexterm>
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<indexterm><primary>user account</primary></indexterm>
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<indexterm><primary>PDC/BDC ratio</primary></indexterm>
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<caution><para>
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Notice: A significant number of network administrators have responded to the guidance given
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below. It should be noted that there are sites that have a single PDC for many hundreds of
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@ -209,11 +214,16 @@ clients is conservative and if followed will minimize problems - but it is not a
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<title>Regarding LDAP Directories and Windows Computer Accounts</title>
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<para>
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<indexterm><primary>LDAP</primary><secondary>directory</secondary></indexterm>
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Computer (machine) accounts can be placed where ever you like in an LDAP directory subject to some
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constraints that are described in this section.
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</para>
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<para>
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<indexterm><primary>POSIX</primary></indexterm>
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<indexterm><primary>SambaSAMAccount</primary></indexterm>
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<indexterm><primary>machine account</primary></indexterm>
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<indexterm><primary>trust account</primary></indexterm>
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The POSIX and SambaSAMAccount components of computer (machine) accounts are both used by Samba.
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i.e.: Machine accounts are treated inside Samba in the same way that Windows NT4/200X treats
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them. A user account and a machine account are indistinquishable from each other, except that
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@ -221,13 +231,17 @@ clients is conservative and if followed will minimize problems - but it is not a
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</para>
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<para>
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The need for Windows user, group, machine, trust, etc. accounts to be tied to a valid UNIX uid
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<indexterm><primary>account</primary></indexterm>
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<indexterm><primary>UID</primary></indexterm>
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The need for Windows user, group, machine, trust, etc. accounts to be tied to a valid UNIX UID
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is a design decision that was made a long way back in the history of Samba development. It is
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unlikely that this decision will be reversed of changed during the remaining life of the
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Samba-3.x series.
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</para>
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<para>
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<indexterm><primary>SID</primary></indexterm>
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<indexterm><primary>NSS</primary></indexterm>
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The resolution of a UID from the Windows SID is achieved within Samba through a mechanism that
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must refer back to the host operating system on which Samba is running. The Name Service
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Switcher (NSS) is the preferred mechanism that shields applications (like Samba) from the
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@ -244,6 +258,7 @@ clients is conservative and if followed will minimize problems - but it is not a
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</para>
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<para>
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<indexterm><primary>nss_ldap</primary></indexterm>
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For many the weapon of choice is to use the PADL nss_ldap utility. This utility must
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be configured so that computer accounts can be resolved to a POSIX/UNIX account UID. That
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is fundamentally an LDAP design question. The information provided on the Samba list and
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