Table Of Contents

Configuring an Aging Strategy

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Last Modified: October 16, 2020

Conserve disk space by configuring a strategy that automatically deletes historical data when certain conditions are met.

To learn more about the periodic and streaming aging strategies, refer to Aging Strategies. Complete the following steps to configure an aging strategy.
  1. Click Navigation menu »Options.
  2. Navigate to Server Settings.
  3. Select Periodic Aging Strategy or Streaming Aging Strategy.
    spd-note-note
    Note  

    Both periodic and stream aging strategies are system-level strategies that apply to data events from all devices.

  4. Use the Aging Strategy pull-down to select the Calendar-Based strategy.
  5. Use the text box below the pull-down to specify how many days' worth of data events to retain.
  6. Specify time(s) when the device permanently retains the data events it collects.
  7. Use the corresponding checkboxes to configure whether data events collected with alarms or for all MCSA Startup events are always retained and whether to retain burst data sets.
  8. Use the Never retain data events from pull-down and select an operating state.
  9. Click OK.
The following table compares how two different aging strategies operate on data. In these examples, assume Day 1 begins with zero data events.
Strategy Day 1 Day 2 Day 3
Collect Delete Total Stored Collect Delete Total Stored Collect Delete Total Stored
Calendar-based—Retain from the past two days 3 0 3 3 0 6 4 All 3 collected on Day 1 7
Calendar-based—Retain from the past two days, and then permanently retain the data even collected at 12:00PM ever day 3 0 3 3 0 6 4 All collected on Day 1 except the one collected at 12:00PM 8

The calendar-based strategy in the second row is useful when you want to access all acquired data only during the recent past. For example, if an equipment fails, you may want to review data from every acquisition that occurred 2 days prior to the failure. However, you may only need to view data from one acquisition per day twenty days prior to failure.

Now that you have configured an aging strategy, learn how to preserve some data events from aging strategies.

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