Table of ContentsView in Frames

Enabling and disabling WAFL external cache

You can enable or disable the WAFL external cache functionality for a storage system that has a caching module installed (Performance Acceleration Module, Flash Cache module, or Flash Cache 2 module). You should verify that the WAFL external cache functionality is enabled after you install a caching module.

About this task

The flexscale.enable option enables or disables the WAFL external cache functionality. If your storage system does not have a caching module installed, the flexscale.enable option enables or disables the Predictive Cache Statistics (PCS). PCS is supported on platforms that support caching modules.

WAFL external cache does not require a separate license if your system is running Data ONTAP 8.1 or later. PCS does not require a license.

This command is available through the nodeshell. You access the nodeshell by using the system node run command. For more information, see the man page.

Steps

  1. To verify whether the WAFL external cache is enabled or disabled, enter the following command: options flexscale.enable
  2. To enable or disable the WAFL external cache, enter the following command: options flexscale.enable {on|off}