Agents Administration - Tests
 

Configuration of NAUSDVolTest

This test helps quickly identify problematic volumes and accurately diagnose the root-cause of slowdowns when reading from/writing into a volume.

Note:

Before attempting to configure this test, ensure that the NetApp Managability SDK (NMSDK) is available on the eG remote agent host. Click here to know more about how to configure the eG agent to use the NMSDK.

For this test to work without a glitch,

The default parameters associated with this test are as follows:

  • 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 IP address of the storage device for which this test is to be configured.

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

  • Specify the name of the user who possess the required privileges to monitor the storage device in the USER text box. If such a user does not pre-exist, then, you can create a special user for this purpose.

  • Specify the password that corresponds to the above-mentioned USER in the PASSWORD text box.

  • Confirm the password by retyping it in the CONFIRM PASSWORD text box.

  • In order to collect metrics from the NetApp Unified Storage system, the eG agent connects to the ONTAP management APIs over HTTP or HTTPS. By default, this connection is authenticated using the LOGIN_PASSWORD authentication mechanism. This is why, LOGIN_PASSWORD is displayed as the default AUTHENTICATION MECHANISM.

  • Set the USE SSL flag to Yes, if SSL (Secured Socket Layer) is to be used to connect to the NetApp Unified Storage System, and No if it is not.

  • By default, in most environments, NetApp Unified Storage system listens on port 80 (if not SSL-enabled) or on port 443 (if SSL-enabled) only. This implies that while monitoring the NetApp Unified Storage system, the eG agent, by default, connects to port 80 or 443, depending upon the SSL-enabled status of the NetApp Unified Storage system - i.e., if the NetApp Unified Storage system is not SSL-enabled (i.e., if the USE SSL flag above is set to No), then the eG agent connects to the NetApp Unified Storage system using port 80 by default, and if the NetApp Unified Storage system is SSL-enabled (i.e., if the USE SSL flag is set to Yes), then the agent-NetApp Unified Storage system communication occurs via port 443 by default. Accordingly, the API PORT parameter is set to default by default.

    In some environments however, the default ports 80 or 443 might not apply. In such a case, against the API PORT parameter, you can specify the exact port at which the NetApp Unified Storage system in your environment listens, so that the eG agent communicates with that port for collecting metrics from the NetApp Unified Storage system.

  • A vFiler is a virtual storage system you create using MultiStore, which enables you to partition the storage and network resources of a single storage system so that it appears as multiple storage systems on the network. If the NetApp Unified Storage system is partitioned to accommodate a set of vfilers, specify the name of the vfiler that you wish to monitor in the VFILERNAME text box. In some environments, the NetApp Unified Storage system may not be partitioned at all. In such a case, the NetApp Unified Storage system is monitored as a single vFiler and hence the default value of none is displayed in this text box.

  • Specify the duration (in seconds) beyond which the test will timeout if no response is received from the NetApp Unified Storage system. By default, the timeout period is 120 seconds.

  • This test not only reports a set of metrics for each volume on the storage device, but also reports metrics for the following descriptors: Busy volumes, Slow volumes, and Highly utilized volumes. By default, the Highly utilized volumes descriptor will report metrics for those volumes in which over 80% of space has already been utilized. This is why, the USED PERCENTAGE THRESHOLD is set to 80 by default. You can change this threshold by specifying a different percentage value against USED PERCENTAGE THRESHOLD. This parameter is deprecated from eG v5.6.5.

  • This test not only reports a set of metrics for each volume on the storage device, but also reports metrics for the following descriptors: Busy volumes, Slow volumes, and Highly utilized volumes. The OPERATIONS THRESHOLD value (in operations/sec) you set determines which volumes will be counted as Busy volumes by this test. Typically, if the rate of operations to a volume exceeds the rate specified against OPERATIONS THRESHOLD, then the test will consider such a volume to be a Busy volume. This parameter is deprecated from eG v5.6.5.

  • This test not only reports a set of metrics for each volume on the storage device, but also reports metrics for the following descriptors: Busy volumes, Slow volumes, and Highly utilized volumes. The AVG LATENCY THRESHOLD value (in milliseconds) you set determines which volumes will be counted as Slow volumes by this test. Typically, if the latency registered by a volume exceeds the AVG LATENCY THRESHOLD you specify, then the test will consider such a volume to be a Slow volume. This parameter is deprecated from eG v5.6.5.

  • The DD FREQUENCY refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 1:1. This indicates that, by default, detailed measures will be generated every time this test runs, and also every time the test detects a problem. You can modify this frequency, if you so desire. Also, if you intend to disable the detailed diagnosis capability for this test, you can do so by specifying none against DD FREQUENCY.

  • To make diagnosis more efficient and accurate, the eG Enterprise suite 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.

  • 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 servers, 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.