Downloading performance data

Server and Cluster Administration Guide for Hitachi NAS Platform

Part Number
You can download performance and capacity data from any of the performance or capacity graphs. The data is downloaded to your client in a compressed .CSV (comma-separated values) text file, that can be decompressed and then opened by many applications. The data downloaded is from the currently specified date range, and it includes the following data points:
  • For all data collected within the last 24 hours, all data points collected at the minimum collection interval for the information shown in the graph. The minimum collection interval differs, and depends on the data being collected.
  • For all data collected more than 24 hours in the past, data points are aggregated and averaged into hourly values, and only the hourly values are retained for up to one year.
  1. Navigate to the graph containing the data you want to download:
    • Click Performance Graphs to display the Performance Graphs page. You can then display a custom date range for all the inset graphs on the page, or click an inset graph to access one of the following full-size graphs on its own page:
      • Node ops
      • Ethernet throughput
      • System load
      • Disk latency
      • Storage throughput
      • Cache and heap usage
      • NVRAM waited allocs
      • Running Network Receive fibers
    • Click File System Ops/Sec to access the File System Ops/Sec page.
    • Click File System Capacity to access the File System Capacity page.
    • Click Storage Pool Capacity to access the Storage Pool Capacity page.
  2. Click Custom to set the date range for the data you want to download
  3. On the individual graph pages, click Download (located next to the date range display controls) to display a dialog that allows you to open the file or to save the file in a destination director. The dialog that appears depends on your browser, but in general you should indicate that you want to save the file, and click OK or Save.
  4. Specify (or navigate to) the destination directory, and then click OK or Save to save the downloaded file in that directory.
    The download process might take anywhere from a few seconds to a few minutes, depending on how much data is in the file to be downloaded. After the file has been downloaded, it can be decompressed using any utility that can decompress zip files.