Node Network Throughputs Test

Sometimes, administrators may want to closely watch the traffic flowing into each node in the storage system. To achieve this, administrators can use the Node Network Throughputs test. This test auto-discovers the nodes in the storage system, and reports the traffic flowing into and out of each node. In the process, the test promptly alerts administrators to any abnormal increase in total traffic to the nodes.

Target of the test : An EMC Isilon Storage System

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each node on the target storage system being monitored.

Measures are also reported for an additional All descriptor.

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed.

Host

The IP address of the host for which this test is to be configured.

Port

The port at which the host listens. By default, this will be NULL.

Timeout

Specify the time duration (in seconds) beyond which this test should time out in the Timeout text box. The default is 10 seconds.

Use SUDO

By default, this parameter is set to No. This indicates that, by default, the eG agent will not require any special permissions to execute the commands. However, in some highly secure environments, this command cannot be executed directly as the eG agent install user is different from the root user who has the privileges to run all commands on the target storage system. In such cases, create a sudo user using the steps discussed in the Pre-requisites for Monitoring the EMC Isilon Storage System. Credentials of such a user should be specified in the Username and Password text boxes in the COMPONENTS page.

Set the Use Sudo parameter to Yes. This will enable the eG agent install user to execute the commands.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Data received

Indicates the rate at which the data is received by this node.

MB/Sec

For the All descriptor, this measure will report the total amount of data received across the nodes per second.

Compare the value of this measure across nodes to know which node is receiving maximum data.

Data transmitted

Indicates the rate at which the data is transmitted from this node.

MB/Sec

For the All descriptor, this measure will report the total amount of data transmitted across the nodes per second.

Compare the value of this measure across nodes to know which node is transmitting maximum data.

Total data

Indicates the rate at which the data is received by/transmitted from this node.

MB/Sec

For the All descriptor, this measure will report the rate at which data is received/transmitted across the nodes.

This is the sum of the Data received and Data transmitted measures and reveals the overall network throughput of the node. A consistent drop in the value of this measure could indicate that the node does not have adequate bandwidth resources for processing network traffic.