Recalculating SLO data for modified time periods

Use the Recalculate SLO option to:

  • Remove or add data collected during specific periods to SLOs 
  • Calculate SLO values anew for multiple SLOs

Note

  • SLO violation details are not regenerated after SLO recalculation. 
  • When you recalculate a parent SLO, all its child SLOs are also recalculated. Similarly, if a child SLO is recalculated, its compliance values are reflected in the parent SLO also.
  • If you change the pronet.businessview.firstdayofweek entry to begin the week on any other day (by default, Sunday is the first day of the week), do not recalculate SLOs for the week, starting from the day when you changed the entry.

To delete a time range

  1. In the SLO Recalculation screen, select the time range that you want to delete.
  2. Click Delete.

To recalculate an SLO

  1. On the SLO Administration screen, select the SLOs that you want to recalculate.

  2. Click Recalculate.

    Tip

    In the SLO Recalculation screen, SLOs that you selected on the SLO Administration screen are displayed in the Selected SLOs field. When you mouse over the selected SLO, the tooltip displays the SLO type and associated schedule.

  3. In the SLO Recalculation screen, select the days for which you want to recalculate the SLO values.
    • Infrastructure Management allows you to recalculate data for a period of eight days.
  4. If you want to include or exclude certain time ranges during the specified time period, perform the following substeps:
    1. Select either Inclusion or Exclusion.
    2. Set one of the following type of time ranges:
      • One-time Setting: A time range applicable for a period of days
      • Every Day: A time range applied to the individual days

    3. Click Addto add the time range that you specified.

      Note

      If you click Recalculate without defining any external time ranges, the SLO is recalculated based on the existing schedule associated with it. When you define a time range and apply it while recalculating an SLO, compliance values are recalculated using the external time range and the associated schedule. The external time range overrides the associated schedule of the SLO.
      For example, if the associated schedule is to include data collected from 9 A.M. to 5 P.M., and the external time range is to exclude data collected from 10 A.M. to 2 P.M., the data exclusion clause overrides the inclusion clause. The SLO reports data collected from 9 A.M. to 10 A.M. and 2 P.M. to 5 P.M. Similarly, for the same associated schedule, if the external time range is to include data collected from 4 P.M. to 8 P.M., the SLO reports data collected between 9 A.M. and 8 P.M.

  5. Click Recalculate.

    Example

    'Chk Availability' is an SLO defined to check the availability of a server. The server is expected to be available (Compliance: >= 90%) during business hours (Schedule: 8 A.M. to 5 P.M.). Compliance values of the server between May 9, 2005 and May 13, 2005 are as follow:
    05.09.2005: 94%
    05.10.2005: 93%
    05.11.2005: 75%
    05.12.2005: 76%
    05.13.2005: 95%
    The server was made unavailable on May 11 and May 12 between 12 P.M. and 3 P.M. for some unscheduled maintenance tasks, and server compliance values fell below 90 on both days.
    To exclude the server down time and recalculate the SLO compliance values anew for the week, the following values are used:

    • Select Days: From May 11, 2005 to May 12, 2005
    • Select External Inclusion or Exclusion Time Ranges: Exclusion, Every Day, Start Time 12 P.M. and End Time 3 P.M.

Related topic

Managing-service-levels-from-the-SLO-Management-Console

 

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