This test auto-discovers the nodes configured on the IBM Storewize v7000 storage system, and for each node, reports the data sent and received by that node and the latency of the node when receiving and sending data. Besides revealing the load on each node, this will also point you to those nodes that are most likely to experience an overload soon, and those nodes that are sending/receiving data much slower than the other nodes. Based on the results reported by this test, you can investigate the reason why certain nodes delay I/O processing, and initiate measures to eliminate the reasons; in addition, you can also fine-tune the load-balancing algorithm of the cluster to ensure that load is uniformly distributed across nodes.

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, specify the host for which the test is to be configured.

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

• Specify the duration (in seconds) beyond which the test will timeout in the TIMEOUT text box. The default value is 60 seconds.

• 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.