Displaying Disk Latency

Server and Cluster Administration Guide for Hitachi NAS Platform

Part Number
The Disk Latency page displays system performance data for disk latency (disk read, write, and disk stripe write) in milliseconds for all the cluster nodes of the currently managed cluster.
  1. Navigate to Home > Status & Monitoring > Performance Graphs > Disk Latency to display the Disk Latency page.

    Item Description
    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    Milliseconds The number of milliseconds of latency for disk read operations, write operations, and disk stripe write operations.
    Date/Time The currently selected date/time range.
  2. Optionally, change the date range displayed in the graph using the date range controls.