The Tivoli® Storage Manager central scheduler allows client operations to occur automatically at specified times.
In order to understand scheduling with Tivoli Storage Manager, several terms need to be defined:
- schedule definition
- A definition on the Tivoli Storage Manager server which specifies critical properties of the automated activity including the type of action, the time the action should take place, and how frequently the action takes place. There are numerous other properties which can be set (see the appropriate Tivoli Storage Manager Administrator's Reference Guide for a detailed description of the define schedule.)
- schedule association
- An assignment to a specific schedule definition for a client node. Multiple schedule associations allow single schedule definitions to be used by many client nodes. Because schedule definitions are included with specific policy domains, it is only possible for nodes defined to a certain policy domain to be associated with schedules defined in that domain.
- scheduled event
- A specific occurrence of when a schedule is executed for a node.
The following conditions must be met before automatic scheduled events
take place for a client:
- A schedule definition must exist for a specific policy domain.
- A schedule association must exist for the required node which belongs to that policy domain.
- The client scheduler process must be running on the client system.
When creating a schedule
definition on the Tivoli Storage Manager server,
schedule actions that you can take include incremental, selective,
archive, restore, retrieve, image backup (does not apply to Mac OS
X), image restore (does not apply to Mac OS X), command, and macro.
The scheduled action that is most frequently used is incremental with
the objects parameter left undefined. With this setting, the Tivoli Storage Manager client
performs a domain incremental backup of all file systems defined by
the client domain option. A schedule definition using the command action
allows an operating system command or shell script to be executed.
When automating tasks for Tivoli Storage Manager for
Data Protection clients, you must use command action schedule
definitions which invoke the command-line utilities for the "Tivoli Storage Manager for"
application.
When creating a schedule definition on the Tivoli Storage Manager server,
schedule actions that you can take include incremental, selective,
archive, restore, retrieve, imagebackup, imagerestore, command, and
macro. The scheduled action that is most frequently used is incremental
with the objects parameter left undefined. With this setting,
the Tivoli Storage Manager client
performs a domain incremental backup of all drives defined by the
client domain option. A schedule definition using the command action
allows an operating system command or shell script to be executed.
When automating tasks for Tivoli Storage Manager for
Data Protection clients, you must use command action schedule
definitions which invoke the command-line utilities for the "Tivoli Storage Manager for"
application.
define schedule standard test1 action=incremental starttime=12:00:00 period=1
perunits=hour dur=30 duru=minutes| Event | Window start | Window end | Actual start (just an example, times vary) |
|---|---|---|---|
| 1 | 12:00:00 | 12:30:00 | 12:05:33 |
| 2 | 13:00:00 | 13:30:00 | 13:15:02 |
| 3 | 14:00:00 | 14:30:00 | 14:02:00 |
| and so on |
The variation in actual start times is a result of the randomization feature provided by the Tivoli Storage Manager central scheduler which helps to balance the load of scheduled sessions on the Tivoli Storage Manager server.