Period for storing historical 15-minute and 24-hour WDM equipment performance data

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On NEs, the most recent 6 periods of historical 24-hour performance data and 16 periods of historical 15-minute performance data can be stored. On the NMS, historical performance data is not automatically reported but is displayed only after being queried.

Other related questions:
Saving period of 15-minute performance data on an OSN 6800
The 15-minute performance data can be saved for 16 periods, which is equivalent to 4 hours (16 x 15 minutes).

Statistics collection intervals supported by the NMS for S series switches
For S series switches (except the S1700), you can set the statistics collection interval on the NMS to 5 min, 15 min, 30 min, 60 min, or 1 day.

Maximum volume of historical performance data that can be stored on an NE
The historical performance database of an NE uses FIFO stack registers which support a limited data volume. When a large number of slots are used on an NE and a large amount of historical performance data needs to be stored, the performance data of each board can be saved for one week.

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