Displaying NVRAM Waited Allocs

Server and Cluster Administration Guide for Hitachi NAS Platform

Part Number
The NVRAM Waited Allocs page displays system performance data for the number of NVRAM waited allocs per second for all the cluster nodes of the currently managed cluster. An NVRAM waited alloc indicates that a file system has had to wait for NVRAM space to be allocated, which means that performance has been negatively impacted.
  1. Navigate to Home > Status & Monitoring > Performance Graphs > NVRAM Waited Allocs to display the NVRAM Waited Allocs 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.
    Allocs/Sec The average number of times per second a node’s NVRAM had to wait for NVRAM space to be allocated.
    Date/Time The currently selected date/time range.
    Min/Max/Median The minimum, maximum, and median number of NVRAM waited allocs per second detected in the currently displayed date range.
  2. Optionally, change the date range displayed in the graph using the date range controls.