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how_to:database_size [2017/04/26 12:07]
paul [Diagnostics logs]
how_to:database_size [2018/11/14 10:45] (current)
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   * As with most database systems, when an entry is deleted, the free space is not returned to Windows, but is simply marked as free, and will be reused ​ by the database later. This is for performance reasons. This means that a new database can grow quickly, but should eventually level out, as a near equilibrium is reached between the new and deleted data.   * As with most database systems, when an entry is deleted, the free space is not returned to Windows, but is simply marked as free, and will be reused ​ by the database later. This is for performance reasons. This means that a new database can grow quickly, but should eventually level out, as a near equilibrium is reached between the new and deleted data.
  
-A better way of seeing how much space is REALLY used by the data is to look at the size of the daily backups. Usually these will be much more stable in size. The backups do not contain the 'free space' or the database indexes. Depending on your settings, the backups may still grow, even if the amount of messages stays the same. This is because the data for the spam filter statistical analyser, historical logging, archived messages etc may still be increasing.+A better way of seeing how much space is REALLY used by the data is to look at the size of the daily backups. Usually these will be much more stable in size. The backups do not contain the 'free space' or the database indexes. Depending on your settings, the backups may still grow, even if the amount of messages stays the same. This is because the data for the spam filter statistical analyser, historical logging, archived messages etc may still be increasing. Note that the daily backups are usually compressed so will typically be about half the size of the uncompressed data.
  
 =====Seeing where the data is being used===== =====Seeing where the data is being used=====
how_to/database_size.txt ยท Last modified: 2018/11/14 10:45 (external edit)