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?

This page depicts the default parameters that need to be configured for the ZFSDiskusageTest.

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

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

When changing default configurations of tests, the values with “$” indicate variables that will be replaced by the eG system according to the specific server being managed - for instance, $hostName is the host/nickname of the target host, $port is the port number of the server being monitored. E.g., for a server xyz:80, $hostName will be changed automatically by the eG manager to “xyz” and $port will be changed to “80” when configuring a test.