EVA Host To Controller Traffic Test

This test auto-discovers the host ports handling data traffic on a controller, monitors the load on each port, and indicates how well the controller handles the load.

Target of the test : An EVA Storage Array

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each host port on the controller.

Configurable parameters for the test
Parameter	Description
Test Period	How often should the test be executed.
Host	The host for which the test is to be configured.
Port	Refers to the port used by the EVA SAN device. By default, it is null.
EvaPerfLocation	Specify the full path of the directory in which the evaperf.exe has been installed.
ArrayName	Specify the name of the EVA SAN array that has been configured for monitoring.
SSSULocation	This test uses the EVAPerf software component to auto-discover the device ports on an EVA storage array. The EVA Controller to Host Port Status test on the other hand uses the SSSU console to discover device ports. During auto-discovery, the EVAPerf utility reports the WWN names of the device ports. In contrast, the SSSU console reports the friendly names of the same device ports. To ensure that device port references are uniform and consistent across tests, you can optionally configure this test to use the SSSU console (instead of EVAPerf) to perform device port discovery. This way, the names of device ports will be the same for this test and the EVA Controller to Host Port Status test. To enable device port discovery via the SSSU console, configure the full path to the location of the SSSU.exe in the SSSULocation text box. If you prefer not to use SSSU.exe for discovering device ports and would rather use the EVAPerf component instead, then, set this parameter to none.
Username, Password and Confirm Password	To use the SSSU.exe for discovering the friendly names of device ports, specify the user credentials using which the HP EVA array is to be accessed in the Username and Password text boxes. Confirm the password by retyping it in the Confirm Password text box. If you do not wish to use the SSSU.exe, then set these parameters to none.
Timeout	Indicate the duration (in seconds) for which this test should wait for a response from the storage device. By default, this is set to 60 seconds.

Measurements made by the test
Measurement	Description	Measurement Unit	Interpretation
Read requests	Indicates the rate at which read requests were received by this host port.	Reqs/Sec
Write requests	Indicates the rate at which write requests were received by this host port.	Reqs/Sec
Data reads	Indicates the rate at which data is read by this host port.	MB/Sec
Data writes	Indicates the rate at which data is written to the this host port.	MB/Sec
Time to process read requests	Indicates the time taken by the controller to service the read requests to this host port.	Ms	Ideally, this value should be low. An unusually high value across hosts could indicate the existence of a bottleneck in I/O processing on the controller.
Time to process write requests	Indicates the time taken by the controller to service the write requests to this host port.	Ms
Pending requests to cache	Indicates the average number of requests waiting in the queue of this host port.	Number	Ideally, this value should be low. In times of heavy load, you may want to compare the value of this measure across host ports to figure out which port is the busiest.