This test reveals the hit ratio of the Data Mover by analyzing the following:

• The percentage of time the requested directory pathname was readily available in the Directory Name Lookup Cache;
• The percentage of time the requested file was readily available in the open file cache and
• The percentage of requested pages that were readily avaliable in this Data Mover.

The default parameters associated with this test are as follow:

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

• In the HOST text box, the host name of the component for which the test is to be configured has to be specified.

• Specify the IP address of the storage controller on the EMC VNX Storage system in the CONTROLLER STATION IP text box. By default, the IP address of the HOST will be assigned in the CONTROLLER STATION IP text box.

• 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 components, 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.