Hardware Cache window

Contributors netapp-ivanad

You can use the Hardware Cache window to enable or disable Flash Cache modules for a storage system that has a Flash Cache module installed. You can also view the read-workload statistics.

Module Information

  • Storage system name

    The name of the storage system that has a Flash Cache module installed displays under the graphic.

  • Enable/Disable toggle button

    Move the toggle button to enable or disable the module.

  • Size

    The size of the module in gigabytes. If there are multiple Flash Cache module cards, the total cache size from all of the cards is displayed.


    The Flash Cache module size that is displayed differs from the actual size for the following reasons: - System Manager reports only the usable capacity that is provided by ONTAP. - A portion of the total capacity is reserved for storing metadata.

  • Model Names

    The model names of the modules.

  • System Read Latency

    Displays the average read latency in milliseconds.

Cache Read Workload

Indicates storage system performance by displaying a graph specifying the rate of the read workload that is served by the disks and the Flash Cache module.