You need to worry about only two general scenarios
when it comes to your domain controllers: complete domain controller failure either
due to hardware failure or software corruption, and intentional or accidental deletion or
modification of objects within your directory.
If you lose a domain controller and you are fortunate enough to have more than
one domain controller in your domain, you can simply set up a new domain controller,
and replication will automatically commence to bring that new server up to the current
state of your Active Directory. If objects in your directory are deleted or modified
either intentionally or accidentally, these changes may have already been replicated to
all your domain controllers before you can stop it from propagating. In this case, you
can perform an authoritative restore of those objects to restore them. If you are restoring
a domain controller and want to minimize the amount of replication traffic with your
other domain controllers, you can optionally install a domain controller using data from
a previous backup. Once this controller goes online, it can then replicate the remaining
updates from other domain controllers.
138 Microsoft Windows Server 2008 Administration
The System State in Windows Server 2008 contains much more data than the System
State of previous Windows versions. The System State now minimally contains the
following:
?–? Registry
?– COM+ Class Registration database
?– Boot files and system files
?– Certificate Services database
?– Active Directory Domain Services
?– SYSVOL folder
?– Cluster service information
?– Microsoft IIS metadirectory
?–? System files protected by Windows File Protection (WFP)
In addition to this, you can no longer simply back up the System State as you could
using NTBACKUP.
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