Lotus Server Backup Performance Tuning

Backing up individual Lotus® server databases does not perform well. Therefore, the Lotus server databases are backed up in groups to improve the save performance. You can change the number of databases in the groups by changing an entry in the NOTES.INI file. Follow these steps to change the number of databases backed up in a group.

  1. Type WRKDOMSVR on a command line.
  2. Choose 13=Edit NOTES.INI on the server you want to modify.
  3. Position to the following entry and modify as required.

    SAVDOMBRM_FILES_IN_GROUP=nnn

    where nnn is the number of databases to be grouped in one BRMS package.

As you increase the number of databases in a group, your Lotus server is backed up more quickly. However, all databases in the group will be journaled during the backup with the changes backed up separately. Because all the databases in the group are journaled until all databases in the group are backed up, the time during which changes to the databases can occur is increased and the size of the changes backed up will increase. When the databases are recovered, the changes to the database that occurred during the backup will be reapplied. The reapply process takes longer as the number of changes increases.

If your server is being backed up during heavy server usage, you will want to keep this group value relatively small, so that fewer changes occur to the database during the backup operation. As a result, recovery of the database can occur in a reasonable amount of time.

If your server is being backed up during off hours when server use is low, you can set the group value higher to speed up the backup operation, while keeping the recovery time reasonable.

The maximum group value is 120.



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