Have any of you microsoft techhies ever heard of an event wereby a dns zone just empties itself in AD/DNS?

We have had a thing thismorning whereby all the dns records for our primary domain vanished, and then replicated throughout the infrastructure. this caused quite a few problems until things started re-registering themselves. The wierd thing is that up until today, any backups that have been taken of DC's all have a version of the .DNS (windows\system32\dns) file that is over a year old, yet others are up-to-date. are DNS details stored anywhere else or just in this file? do they get cached before getting written into the file?

if you really are using ad with dns, then the files are not updated. The whole DNS database is stored in AD. The only thing I can think of, is if you have scavenging of stale records scheduled that it did something and deleted the records.

if you really are using ad with dns, then the files are not updated. The whole DNS database is stored in AD. The only thing I can think of, is if you have scavenging of stale records scheduled that it did something and deleted the records.

Cheers. it does sound like a logical explanation.. altho randomly all the records randomly "reappeared" a few hours later just before we were about to kick off an authorotive restore

Gets me off the hook as far as backing the DC's up too by management blame culture