Installation and User's Guide

Related reference“Postschedulecmd/Postnschedulecmd” on page 429“Preschedulecmd/Prenschedulecmd” on page 431Client-acceptor scheduler services versus the traditional schedulerservicesYou can configure the Tivoli Storage Manager client to manage the schedulerprocess using the Tivoli Storage Manager client acceptor.The client acceptor daemon provides a light-weight timer which automaticallystarts and stops the scheduler process as needed. Alternatively, the traditionalmethod keeps the Tivoli Storage Manager scheduler process running continuously.Generally, using the client acceptor daemon to manage the scheduler is thepreferred method.The following information is a comparison of the client acceptor daemon-managedservices and the traditional scheduler services methods.client acceptor daemon-managed servicesvvvvDefined using the managedservices schedule option and started withclient acceptor daemon services (dsmcad).The client acceptor daemon starts and stops the scheduler process asneeded for each scheduled action.Requires fewer system resources when idle.Tivoli Storage Manager client options and Tivoli Storage Manager serveroverride options are refreshed each time the client acceptor daemonservices start a scheduled backup.v Cannot be used with SESSIONINITiation=SERVEROnly backups.Tivoli Storage Manager traditional scheduler servicesv Started with command dsmc sched command.v Remains active, even after scheduled backup is complete.v Requires higher use of system resources when idle.v Tivoli Storage Manager client options and Tivoli Storage Manager serveroverride options are only processed once when dsmc sched is started.v You must restart the scheduler process for updated Tivoli StorageManager options to take effect.Tip: Restart the traditional scheduler periodically to free system resourcespreviously used by system calls.Set the client scheduler process to run as a background task and startautomatically at startupYou can configure the Tivoli Storage Manager client scheduler to run as abackground system task which starts automatically when your system is started.This is true for both client acceptor daemon-managed and traditional methods ofrunning the Tivoli Storage Manager client scheduler.In order for the scheduler to start unattended, you must enable the client to storeits password by setting the passwordaccess option to generate, and store theChapter 7. Tivoli Storage Manager scheduler overview 221