
5.5 Storage Optimization for Exchange 2003 393
Chapter 5
thread that will write sequentially to the log file, with possibly interleaved
transactions (to different databases of that storage group) in the stream of
records. There is one exception to this process, and that is when data is
received from the IIS virtual servers: the information is written in the form
of a simple file in the Exchange IFS, and when the transaction is actually
committed, that file is read back from the IFS (and it most likely already
resides in the NT cache) and logged in the transaction log file(s).
The flush of transaction records happens when a particular calling
thread in the ...