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Foglight for Storage Management Shared 4.5.5 - User and Reference Guide

Getting Started Monitoring Storage Performance Investigating Storage Devices Investigating Storage Components Troubleshooting Storage Performance Managing Data Collection, Rules, and Alarms Understanding Metrics Online-Only Topics

Changing Alarm Sensitivity

You can control which categories of StSAN rules generate alarms.

1
On the navigation panel, under Dashboards, click Storage & SAN > Storage Environment.
2
Click the Administration tab.
3
Click Change Alarm Sensitivity.
5
Click Save.

Configuring Email Notifications for Alarms

You can define a list of email addresses that receive a notification whenever an essential rule evaluates to a Critical or Fatal status. Email addresses are saved to the StorageAdministrator registry variable. An essential rule begins with StSAN E and has the email action set automatically. For more information about rules, see Managing Foglight for Storage Management Rules.

1
On the navigation panel, under Dashboards, click Storage & SAN > Storage Environment.
2
Click the Administration tab.
3
Click Configure Storage Administrator Email Addresses.
4
Click Add, type an email address, and click Add. Repeat to add additional email addresses.

Troubleshooting Database Limits

Foglight for Storage Management sets limits on the number of instances of each object type that can exist in the Database Repository. On the Administration tab, the Review Instances and Limits task enables you to view a table containing a list of Foglight for Storage Management object types.

For each object type, the table displays the instance limit, the number of instances currently in the database, the utilization (count/limit), and a status based on utilization. While the utilization remains below 90%, the object type status is Normal. When utilization reaches 90%, the status becomes Critical; if you intend to monitor new instances of this object type, you should take some steps to plan for the growth. At 100%, the status changes to Fatal and Foglight for Storage Management does not create anymore instances of the object type. For example, if the SanLUN object type is at 99% utilization, and you add an agent to monitor a new storage array that has 200 LUNs configured, the SanLUN instance limit will soon be reached and you will not see data for many of the new LUNs in the dashboards.

The limit on the number of instances per object type is a global default value, which is set in the registry variable called foglight.limit instances. You can override the limit for selected topology types.

1
On the Storage Environment dashboard, in the Administration tab, click Review Instances and Limits.
3
To increase or decrease a limit, click Edit Registry Variables and select foglight.limit.instances.

Understanding Metrics

This section defines the metrics displayed in the Storage & SAN dashboards. It also provides an overview of metrics in Foglight for Storage Management—you need this information if you intend to create new rules or custom dashboards.

This section contains the following topics:

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