The CA User Activity Reporting Module server automatically creates warm database files, called archive files, when a hot database reaches the Maximum Rows setting you specify in the event log store service. Hot database files are not compressed.
When you configure auto archiving from a collection server to a reporting server, the warm databases on the collection server are deleted after the databases are copied to the reporting server. The Max Archive Days does not apply here.
When you configure auto archiving from a reporting server to a remote storage server, the warm databases on the reporting server are not deleted after being copied to the remote storage server. Rather, these warm databases are retained on the reporting server until the Max Archive Days value is reached. Then, they are deleted. However, a record of these deleted, cold databases is retained so you can query the archive database for details, should you ever need this information for performing a restore.
When determining how to set Max Archive Days, consider your available disk space on the reporting server. You configuration for Archive Disk Space sets the threshold. If available disk space falls below the set percentage, event log data is deleted to make more room even when the Max Archive Days for that data has not elapsed.
When you do not configure auto archiving from a reporting server to a remote storage server, you must manually back up the warm databases and manually move the copy to a remote storage location at a frequency greater than the configured Max Archive Days. Otherwise, you risk losing data. We recommend that you back up archive files daily to avoid a potential data loss and to maintain adequate disk space. The event log store service manages its own internal cache for queries on archived databases to improve performance when running repeated or very broad queries.
More information on working with archive files is available in the CA User Activity Reporting Module Administration Guide.
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