This section describes the effects of multiple residency on backups.
When you use multiple residency, you must maintain separate dbspace and logical-log backups for each database server instance. When you perform dbspace and logical-log backups with multiple residency, you need to be especially aware of device use.
If you can dedicate a tape drive to each database server, you can use the continuous logging option to back up your logical-log files. Otherwise, you must plan your dbspace and logical-log backup schedules carefully so that use of a device for one database server instance does not cause the other database server instance to wait. You must reset the ONCONFIG parameter each time that you switch your backup operations from one database server instance to the other.
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