Physical Drive - Performance Statistics : report template

This template produces historical performance reports for physical drives.

Summary

  • Report template name: Physical Drive - Performance Statistics

  • Default report name: Physical Drive Performance

  • Default charts (metrics): IOPs, service time, bandwidth

  • Other charts (metrics): I/O size, queue length, average busy

Key default settings:

  • Report type: Time interval

  • Sampling: Hourly

  • Report duration (period): 1 week

  • Objects: All objects

Key metric terms and descriptions

  • Length: Queue length at the sample time. The queue length is an instantaneous measure at the sample time, not an average over the sample interval. Due to the way that RCFC ports process data, the queue length might not be a valid measure.

  • Avg busy: The percentage of time that a resource (object) is busy (has at least one outstanding I/O operation). This is not the same as the percentage of available bandwidth that is being used. For example, a port shown as 50% busy might have much less than 50% of its bandwidth utilized. This is because the port might be idle for a substantial period of time between the request and response. For RCFC ports, the value is always 100%.