VNXe Disk Performance Test

This test monitors the load balancing capability of each disk of the target storage system. Using this test, administrators can pin point the disks that are handling more I/O requests than the rest. This way, irregularities in the distribution of I/O load across disks can be detected at ease and in the process, administrators would be able to fine-tune the load-balancing algorithm. In addition, the test also proactively alerts administrators to probable slowdowns in I/O processing by specific disks, thereby enabling administrators to initiate pre-emptive actions.

Target of the test : An EMC VNXe Storage system

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each Storage Processor: Disk combination on the target storage system being monitored

Configurable parameters for the test
Parameters	Description
Test Period	How often should the test be executed.
Host	The host for which the test is to be configured.
Unisphere CLI Path	The eG agent uses the command-line utility, UEMCli.exe, which is part of the UniSphere Management Suite, to communicate with and monitor the storage device. To enable the eG agent to invoke the CLI, configure the full path to the CLI in the UniSphere CLI Path text box.
Username and Password	Provide the credentials of a user possessing monitor role to access the storage device in the Username and Password text boxes.
Confirm Password	Confirm the password by retyping it here.
VNXe Version	Select the version of the target EMC VNXe storage system that is to be monitored from this list. By default, 1600 will be chosen from this list.
Detailed Diagnosis	To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option. The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled: The eG manager license should allow the detailed diagnosis capability Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.

Measurements made by the test
Measurement	Description	Measurement Unit	Interpretation
Peak read bandwidth	Indicates the maximum amount of data read from this disk per second.	MB/sec	The detailed diagnosis of this measure lists the VNX time, name of the storage processor and the read bandwidth corresponding to that time.
Average read bandwidth	Indicates the average amount of data read from this disk per second.	MB/sec
Peak write bandwidth	Indicates the maximum amount of data written to this disk per second.	MB/sec	The detailed diagnosis of this measure lists the VNX time, name of the storage processor and the write bandwidth corresponding to that time.
Average write bandwidth	Indicates the average amount of data written to this disk per second.	MB/sec
Peak read IOPS	Indicates the maximum number of read operations performed on this disk per second.	IOPS	The detailed diagnosis of this measure lists the VNX time, name of the storage processor and the read IOPS corresponding to that time.
Average read IOPS	Indicates the average number of read operations performed on this disk per second.	IOPS
Peak write IOPS	Indicates the maximum number of write operations performed on this disk per second.	IOPS	The detailed diagnosis of this measure lists the VNX time, name of the storage processor and the write IOPS corresponding to that time.
Average write IOPS	Indicates the average number of write operations performed on this disk per second.	IOPS
Peak total IOPS	Indicates the total number of I/O operations performed on this disk per second.	IOPS	The detailed diagnosis of this measure lists the VNX time, name of the storage processor and the total IOPS corresponding to that time.
Average total IOPS	Indicates the average number of I/O operations performed on this disk per second.	IOPS
Peak service time	Indicates the maximum time taken by this disk to service user requests.	Milliseconds	The detailed diagnosis of this measure lists the VNX time, name of the storage processor and request service time.
Average service time	Indicates the average time taken by this disk to service user requests.	Milliseconds
Peak response time	Indicates the maximum time taken by this disk to respond to user requests.	Milliseconds	The detailed diagnosis of this measure lists the VNX time, name of the storage processor and the response time for user requests.
Average response time	Indicates the average time taken by this disk to respond to user requests.	Milliseconds