Hi Team, Question: How is data being updated to the exchange data files? Answer: As per my knowledge, the data goes to the Memory first and then to the transaction logs and then gets updated to the data files when a check point is trigerred. ---------------- I need clarification on the above: I was chatting with an Exchange Tech and he told me another version of database updation. He says... the data will get written to Transaction logs... but the data will also parallellywrite to exchange data files directly from the memory. Is this true????? Can someone clarify this and if possible provide me a clear understanding on exchange data file updation. Thanks Santhosh

Hi, Data is not written to the transaction logs and to the databases in parallel - it is important that the transaction logs are written before the database: See "Before changes are actually made to an Exchange database file, Exchange writes the changes to a transaction log file. After a change has been safely logged, it can then be written to the database file" from: http://technet.microsoft.com/en-us/library/bb124452.aspx Leif