Dell PowerVault ME5 Series Administrator's Guide

System metrics

There are two types of metrics: historical and dynamic.

The sampling interval for a dynamic metric is 5 seconds while that of a historical metric is 5 minutes. The system samples every metric at a dynamic sampling interval. The last few minutes of samples are kept in cache and cache is flushed automatically at historical sampling intervals with calculated maximum, minimum, and average data points retained in the historical database. Only a few dynamically sampled user-selected data series are retained. For such user selected data series, several hours of data points are available. The Performance panel provides charting and data comparison capabilities for metrics that are maintained in the system. For more information, see the Performance panel.