CSM schedules

Once you have defined an object, it is scheduled to be UP all the time unless you specify a schedule of DOWN times.

You will find that some objects need to be DOWN and this state is accomplished by creating a schedule as part of the object’s definition.

CSM enables you to define a weekly schedule for all objects. Once the object is defined with a schedule, CSM tries to match the desired state (defined by the schedule) with the object’s actual state. CSM manages the object according to the schedule, automatically bringing it UP or DOWN at the specified times.

Related topic

Managing-critical-applications-with-Continuous-State-Manager

When the object has children, they are brought UP and DOWN automatically with the parent object’s schedule. When the object has clients, they are disconnected from it and reconnected to it.

Two types of object schedules can be defined: routine schedules and exception schedules (where a routine schedule is overridden).

Routine scheduling for objects

A routine schedule consists of the day of the week and the time of each day that an object is to be brought DOWN.

The following example shows a schedule for when an object should be DOWN:

Wednesdays from 3:00 P.M. to 7:00 P.M.
Fridays from 2:00 A.M. to 3:00 A.M.
Fridays from 6:00 A.M. to 9:00 A.M.
Sundays from 3:00 P.M. to 6:00 P.M.

Outside of these times, CSM assumes the object should be UP.

When you define objects to CSM, you should plan and compare the schedule that the object needs with the schedule of any children objects. This planning will help you when an object’s parent might have a schedule that conflicts with the child because stopping the parent at the scheduled time will stop the child first.

Therefore, the schedule for a child object must include the DOWN time of its parents. If it does not, a message prompts you during the definition of the object to correct the situation.

You can also schedule DOWN times of CSM objects with

  • DAILY: specifies that an object should be DOWN at a specified time every day of the week (Monday through Sunday) every week
  • WEEKDAY: specifies that the object should be DOWN at a specified time on Monday through Friday of every week
  • WEEKEND: specifies that the object should be DOWN at a specified time on every Saturday and Sunday

Exceptional scheduling for objects

CSM enables you to define Global Calendar Overrides for special one-time situations where your plans require that objects must be brought UP or DOWN outside the routinely scheduled UP or DOWN time.

For example, you might discover that for a particular day an object that is scheduled to be DOWN at 4:00 P.M. might need to stay UP for an additional hour. You can schedule a Global Calendar Override for the object to stay UP until 5:00 P.M. for that one day.

The Global Calendar Overrides are valid only once. You want to use Global Calendar Overrides to alter an object’s schedule whenever you foresee a change to routine schedules.

Important

The Global Calendar Override does not check for conflicting schedules between parents and dependents. Therefore, when an override is specified for an object, that object and all its dependents are taken down on the specified date and time.

When the object is returned to its routine schedule, the dependents also are brought back on schedule, which eliminates the need to specify the special down times for each object affected by the temporary schedule change.

 

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