V původním znění, ale bez titulků :o)
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Exchange Server 2003 SP2 brings many updates and new features to the mix. One of the biggest updates for Standard Edition admins is the increased database limits. Exchange 2003 SP2 offers 75GB database limits on Standard Edition servers.
If you have downloaded the CTP and installed it, you may think you are ready to start loading up on mail and blowing past the 16GB limit, but slow down. In order to take advantage of the increased database limit you must enable it in the registry. By default the database is still limited to 18GB, to increase this limit open up regedit and drill down to
HKLM\SYSTEM\CurrentControlSet\Services\MSExchangeIS\[ServerName]\Private-[ObjectGUID]
Create a REG_DWORD key called Database Size Limit in GB and set the value to 75. This will enable the database to go over the 16GB limit up to 75GB. You can select any value between 1 and 75 for a custom database limit if you only have 36GB of disk space, no use setting the limit to 75GB.
Lets go back for a second. I just stated that the database was limited to 18GB. You probably thought that was a typo and I meant 16GB well let me explain! Once Exchange 2003 SP2 is installed the default limit is increased to 18GB, but you will still get warnings once you hit 16GB. This is due to the next REG_DWORD called Database Size Buffer in Percentage. This can be given the a value between 1 and 100 with the default being 10. This controls the warning threshold, 10% of 18 is 1.8, so at approximatley 16.2GB you will recieve warnings.
When Exchange 2003 SP2 servers reach the limit, event ID 9689 will be logged in the Application log but the database will remain online. When the next database size check interval passes (every 24 hours) and the database is still over the limit, an error will be logged in the Application log and the store will be dismounted. You can remount the store, however you must increase the database size limit (if possible) or reduce the amount of data in the database. You have until the next database size check interval, which runs at 5AM everyday, to remedy the situation or your database will be dismounted again.
Aktualizace:
http://blogs.technet.com/exchange/archive/2005/09/14/410821.aspx