For every dataset on ZFS, this test reports the total space usage of the dataset, thus pointing you to those datasets that are rapidly eroding storage space. Alongside, the test enables administrators to keep track of the quota limit set for a dataset and the compression ratio achieved by a dataset, so that the impact of these configurations on the total disk space usage of the dataset can be effectively assessed; the results of this analysis can later be used to fine-tune the configurations! In addition, the test monitors the count of snapshots and clones created from each dataset and reports the space usage of these snapshots and clones, thus leading you to why a particular dataset is consuming too much space - is it because too many snapshots were created from that dataset? Is it because of the large size of the snapshots? Is it owing to incessant cloning of the snapshots? Or is it due to the large size of the snapshot clones?

The default parameters associated with this test are as follows:

• The TEST PERIOD list box helps the user to decide how often this test needs to be executed.

• In the HOST text box, specify the host for which this test is to be configured.

• Specify the port at which the specified HOST listens to in the PORT text box. By default, this is NULL.

• If multiple components of the same component type are awaiting configuration, then an APPLY TO OTHER COMPONENTS check box will appear in this page. Clicking on this check box will allow you to apply the configuration to all/selected components of that type.

• Once the necessary values have been provided, clicking on the UPDATE button will register the changes made.

When changing the configuration for specific servers, a “*” beside the text box corresponding to the parameter signifies that these values have to be manually configured by the user. The parameter values that require to be configured will typically be prefixed with a “$” or contain a series of “*”. A value of "none" in the parameter value indicates that the corresponding parameter value can be changed if required.