The Tivoli® Storage Manager database contains information about client data and operations of the server. The recovery log helps to ensure that a failure, such as a system power outage or application error, does not leave the database in an inconsistent state. Both are key to the operation of the server.
The Tivoli Storage Manager database does not store client data; it points to the locations of client files in storage pools and stores information about client data, also called metadata.
The database includes information about:
- Client nodes and administrators
- Policies and schedules
- Server settings
- Locations of client files on server storage
- Server operations (for example, activity logs and event records)
- Intermediate results for queries
The server records changes made to the database
(database transactions) in its recovery log. The recovery log is used
to maintain the database in a transactionally consistent state, and
to maintain consistency across server startup operations. The recovery
log consists of these logs:
- Active log
- Log mirror (optional)
- Archive log
- Archive failover log (optional)
Figure 1 shows
the components of the database and recovery log.
Figure 1. Tivoli Storage Manager database and recovery
log