Friday, February 25, 2011

Reload, Transfer or Reload from Master DNS secondary zone?

Often confusion arises when manually updating the DNS zone.
Reload, Transfer From Master or Reload from Master - what to choose?
Open the book "MCTS Exam 70-642: Cinfiguring Windows 2008 Network Infrastructure" on the page 201 and carefully read the following:
Manaully Updating a Secondary Zone
  • Reload This operation reloads the secondary zone from local storage.
  • Transfer From Master The server hosting the local secondary zone determines whether the serial number in the secondary zone's SOA resource record has expired and then pulls a zone transfer from the master server.
  • Reload From Master This operation performs a zone transfer from the secondary zone's master server regardless of the serial number in the seconadry zone's SOA resource record.