Documentation forStorage Resource Monitor

Latency Histogram for LUNs or NAS volumes

This widget is displayed on the details page for a storage pool, and shows the distribution of latency performance for the LUNs or NAS Volumes in the pool.

Latency totals are grouped into distinct ranges (0-5, 6-10, 11-15, 16-20, 21-30, 31-50, 51-100, 101-500, 501-1000, 1000+ ms). The height of each bar shows the number of LUNs or volumes currently performing in that range. The color of the bar shows if the latency values are considered normal (blue), warning (yellow) or critical (red).

You can choose to display data for the latest poll, the last hour, 12 hours, or 24 hours.

Move the cursor over the bars to show the exact number of LUNs or NAS volumes.

Click on the histogram to display a tabbed grid detailing all LUNs or NAS Volumes for the selected time period, grouped by latency. Total, write, read, and other latencies are given for each object.

Click Edit to:

  • Change the title and subtitle.
  • Change the default zoom.
  • Add a chart title and subtitle.