HP Archive Backup System for OpenVMS Guide to Operations

Saving and Restoring Data
3.5 Saves and Restores
Figure 3–2 Complex Backup Schedules
• CUSTOM - This option allows you to define a specialized frequency by manipulating the
associated schedule object directly. In this way you can define more flexible scheduling frequencies
than are offered by the standard options. If you specify CUSTOM but do not modify
the schedule object, then the default custom frequency is daily. This option applies only
if internal MDMS scheduling is enabled (scheduler options INTERNAL and EXTERNAL).
• EXPLICIT - This option enables you to submit the save request using a specific scheduler
interval. If you select Explicit, you must enter a scheduler time format valid for the scheduler
being used in the EXPLICIT INTERVAL attribute. This option applies only if a thirdparty
scheduler is being used (scheduler options SCHEDULER).
3.5.11 Incremental
• NEVER - Never submits the save request and does not call the scheduler to create a job. For
example, you may need to create one or more save requests before you determine their
schedule. To submit the save request, modify the save request and change the scheduling
option.
Depending on the selected scheduling option and the use of a 3rd party scheduler product,
the Explicit Interval option allows to specify more flexible intervals. The Explicit Interval is
passed as a string to the scheduler in use. Consult your scheduler’s manual for more information.
Every save or restore request can be flagged as an incremental operation or a non-incremental
operation. An incremental operation saves or restores files based on a previous operation - either
a full operation or another incremental operation. For example, you could define a save request
that performs a full disk save on Sunday, and an incremental save request that performs incremental
saves on Monday through Saturday. The incremental saves will only save files that have
been created or modified since the previous save (whether full or incremental). Restores can be
performed in a similar fashion.
Saving and Restoring Data 3–25