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Transaction log file<br />
<a href="http://technet.microsoft.com/en-us/library/bb124452(EXCHG.65).aspx" rel="ugc">http://technet.microsoft.com/en-us/library/bb124452(EXCHG.65).aspx</a>
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Transaction log file
http://technet.microsoft.com/en-us/library/bb124452(EXCHG.65).aspx [http://technet.microsoft.com/en-us/library/bb124452(EXCHG.65).aspx]

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Sorry: <br />
That's from the article<br />
&quot;The checkpoint file (Enn.chk) tracks how far Exchange has progressed in writing logged information to the database files. Typically, on a busy database, the checkpoint lags three or four log files behind the currently open log. There is a checkpoint file for each log stream, and a separate log stream for each storage group. Within a single storage group, all the databases share a single log stream. Thus, a single log file often contains operations for multiple databases.&quot;<br />
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Sorry:
That's from the article
"The checkpoint file (Enn.chk) tracks how far Exchange has progressed in writing logged information to the database files. Typically, on a busy database, the checkpoint lags three or four log files behind the currently open log. There is a checkpoint file for each log stream, and a separate log stream for each storage group. Within a single storage group, all the databases share a single log stream. Thus, a single log file often contains operations for multiple databases."



e00.chk

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.