Epo global updating

Posted by / 22-Oct-2016 13:05

Epo global updating

There are five FSMO roles, two per forest, three in every Domain. The SID consists of a Domain SID (which is the same for all SIDs created in the domain) and a RID which is unique to the Domain.

The global catalogue is used to compare data as it receives regular updates for all objects in all domains.

Any change to user-group references are updated by the infrastructure master.

The PDC emulator acts as a Windows NT PDC for backwards compatibility, it can process updates to a BDC.

It is also responsible for time synchronising within a domain.

These roles are installed automatically and there is normally very little reason to move them, however if you de-commission a DC and DCPROMO fails to run correctly or have a catastrophic failure of a DC you will need to know about these roles to recover or transfer them to another DC.

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The forest wide roles must appear once per forest, the domain wide roles must appear once per domain. When an object such as a user, group or computer is created in AD it is given a SID.