Knowing about Scavenging and Aging

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    Knowing about Scavenging and Aging

    Savaging and Aging are features in DNS which provide you with a mechanism for performing cleanup and removal of stale resource records, which accumulate in zone data over time.
    Dynamic updates for resource records in DNS keep the data in the zone. At times, these records are not removed completely in case of a user using tablet/phone wherein he sets a AAAA record and disconnects himself from the network improperly, the AAAA resource record might not be deleted properly if in such case.
    This can lead to many unnecessary problems including Disk Space maximization.

    WHAT CAN BE DONE
    1> Time Stamping
    --> DNS has Time stamping where in these features are time based that get deleted once the time stamp value has reached.
    (By default the resource records that you add manually have a time stamp of 0 which stores the same for unlimited time, if you change it to a specific number, your records get deleted automatically after reaching the value limit).

    2> Scavenging of records beyond time
    --> This includes the records to be deleted by the DNS service after their refresh interval time have been completed. You can initiate them to complete the same right away or complete to be completed that manually.

    To enable automatic scavenging for stale resource records, you can follow the following steps:

    1> Open DNS Manager.
    2> In the console tree, right-click the applicable DNS server, and then click Properties.
    3> Click the Advanced tab.
    4> Select the Enable automatic scavenging of stale records check box.
    5> To adjust the Scavenging period, in the drop-down list, select an interval in either hours or days, and then type a number in the text box.
    Do let me know your feedback on it.

    Thank you....

    #2
    Re: Knowing about Scavenging and Aging

    Originally posted by Paulstev
    Thanks a lot!
    Your most welcome Paulstev.
    Do let me know your feedback on it.

    Thank you....

    Comment


      #3
      Re: Knowing about Scavenging and Aging

      This is actually effective.

      Comment


        #4
        Re: Knowing about Scavenging and Aging

        DNS Servers supporting Windows Server 2003 enable aging and scavenging features. Aging and Scavenging act as a mechanism for conducting cleanups and removing stale resource records (RR) which gets accumulated in zone data over a period of time. While dynamic updates take place, RR's gets added to the zone automatically when computers are started on the network. However, they do not get removed automatically when computers leave the network.

        For example; If host (A) RR is registered by its own computer on startup and later on is disconnected from the network improperly, there are few chances the host RR will not get deleted. If the network has more computers and mobile users, this situation will take place often.

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