This setting is only available in the space filtertype. This setting is optional, and defaults to greater_than to preserve backwards compatability.

- filtertype: space
  disk_space: 5
  threshold_behavior: less_than

The value for this setting is greater_than (default) or less_than.

When set to less_than, indices in less than disk_space gigabytes will be matched. When set to greater_than (default), indices larger than disk_space will be matched.