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Aging and Scavenging Parameters for Zones
Zone Parameter Description Configuration Tool Notes
No-refresh interval Time interval, after the last
time a record’s timestamp
has been refreshed, during
which the server does not
accept refreshes for the
record. (The server still
accepts updates.)
DNS console and
Dnscmd.exe
When an Active Directory–
integrated zone is created,
this parameter is set to the
DNS server’s parameter
Default no-refresh interval.
This parameter replicates
through Active Directory
replication.
Refresh interval The refresh interval comes
after the no-refresh interval.
On expiration of the no-
refresh interval, the server
begins accepting refreshes
for the record. After the
refresh interval expires, the
DNS server may scavenge
records that have not been
refreshed during or after the
refresh interval.
DNS console and
Dnscmd.exe
When an Active Directory–
integrated zone is created,
this parameter is set to the
DNS server’s parameter
DefaultRefreshInterval.
This parameter is replicated
by Active Directory.
Enable Scavenging This flag indicates whether
aging and scavenging is
enabled for the records in
the zone.
DNS console and
Dnscmd.exe
When an Active Directory–
integrated zone is created,
this parameter is set to the
DNS server’s parameter
DefaultEnableScavenging.
This parameter is replicated
by Active Directory.
ScavengingServers This parameter determines
which servers can
scavenge records in this
zone.
Only Dnscmd.exe This parameter is replicated
by Active Directory.
Start scavenging This parameter determines
when a server can start
scavenging of this zone.
Not configurable This parameter is not
replicated by Active Directory.
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