Can Scavenging run daily, deleting records older than 14 days?

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i'm getting round setting scavenging, , i'd is:

1. allow computers register dns records frequently, every 1 or 2 days, can see if computers having problems registering. i'm not worried replication traffic.

2. have old records scavenged after 14 days. 15 days ok, don't want them hanging around longer that.

think 1 can achieved setting no refresh time 1 or 2 days, how achieve 2? i've read if set refresh time to, say, 12 days records won't scavenged until they're on 14 days old (the no refresh time plus refresh time, assuming no refresh time 2 days). ok of course. i've read scavenging run every 12 days think wierd. means old record hang around 23 days. 

scavenging runs @ frequency stated in:
http://blogs.technet.com/b/dougga/archive/2012/02/09/it-takes-two-dns-scavenging.aspx
says: "server scavenging should looked @ event in time occurs every x days.  which 7 default value.  so if server configured scavenge records every 7 days scheduled task."
tbh can't see logic in this.

i've seen in dns mmc there's option run scavenging manually, , presumably can run script. either of these give way of getting scavenging running daily? or there better way?

in advance.

hi,

various services have default refresh periods register , refresh records dynamically in dns(dhcp client 24h, net logon 24h, etc.). when no-refresh interval in effect specific resource record, attempts dynamically refresh time stamp suppressed dns server. said shorten time of no-refresh achieve 1.

option “enable automatic scavenging of stale records” of server defines automatic scavenging period. record compared current server time on basis of sum(record time stamp + no-refresh interval zone + refresh interval zone)  determine whether record should removed.

for detailed explanation aging , scavenging process, please reference link below last session example: aging , scavenging process sample record：
https://technet.microsoft.com/en-us/library/cc771677.aspx

and blog provides picture explain aging , scavenging, reference:
http://blogs.technet.com/b/networking/archive/2008/03/19/don-t-be-afraid-of-dns-scavenging-just-be-patient.aspx

best regards,
eve wang

please remember mark replies answers if , unmark them if provide no help. if have feedback technet support, contact tnmff@microsoft.com.



Windows Server  >  IPAM, DHCP, DNS



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