IBM Logical Drive Traffic Test

This test reports the level of I/O and transaction traffic on each LUN so that, you can accurately isolate LUNs that are over-loaded.

Target of the test : An IBM DS Raid Storage device

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each LUN

Configurable parameters for the test
Parameter	Description
Test Period	How often should the test be executed .
Host	The IP address of the storage device
Port	The port number at which the specified Host listens. By default, this is NULL.
SMCliLocation	The test uses the command-line utility, SMcli.exe, to collect the required statistics from the IBM DS Raid Storage device. To enable the test to run the SMcli.exe, provide the full path to the exe in the SMCliLocation text box. Note: If the SMcli.exe resides in say, C:\Program Files\IBM_DS\client, your SMCliLocation should be : C:\Progra~1\IBM_DS\client. On the other hand, if the SMcli.exe resides in say, C:\Program Files (x86)\IBM_DS\client, your SMCliLocation should be: C:\Progra~2\IBM_DS\client.
Alternate Controller IP	By default, the Alternate Controller IP text box is set to none. This implies that by default, the storage device being monitored supports a single controller only, and the IP address of this controller is the same as the IP address of the target Host. Sometimes, a storage device could be configured with two/more controllers, so as to provide fail-over services - in other words, if the primary controller is down, then one of the alternate controllers will take over from the primary to provide the critical storage services. In this case, you can provide a comma-separated list of alternate controller IPs in the Alternate Controller IP text box.
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 30 seconds.

Measurements made by the test
Measurement	Description	Measurement Unit	Interpretation
Current IO operations	Indicates the number of I/O operations on this LUN during the last measurement period.	Number
Percent read operations	Indicates the percentage of read operations on this LUN.	Percent
Percent write operations	Indicates the percentage of write operations on this LUN.	Percent
Cache hit percent	Indicates the percentage of requests served from the cache by this LUN.	Percent	A high value is ideally desired for this measure. A low value could imply that most of the data requested is not in the cache, which in turn could result in a high degree of direct disk accesses.
Transaction rate	Indicates the rate of transactions to this LUN.	KB/Sec
I/O operations rate	Indicates the rate of I/O operations to this LUN.	IO/Sec