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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

Topology collections

During topology collections, Foglight for Storage Management gathers basic information regarding each object and its child objects. For example, on an array object, LUN, disk, and children information is gathered. Foglight for Storage Management gathers various attributes and parameters (for example, size or capacity) as well as relationship data. This relationship data is the key to understanding the basic topology and interconnects, or paths, between objects (parent to parent, child to parent and, where appropriate, child to child). Without this relationship information performance analysis would not be possible.

Performance collections

During performance collections, Foglight for Storage Management gathers the following basic types of information:

Default data collection schedules

Storage Collector agents have a default schedule for topology and performance collections, as described in the following table.

3 hours

n/a

15 minutes

Defines the collection interval for an agent that monitors a storage device using SMI­-S or Hitachi AMS. The management hosts from which the Storage Collector agent collects performance data using SMI-S obtain performance data from the arrays every 15 minutes. Setting the agent to collect data more frequently is inefficient, because the same data is re-collected and discarded.

10 minutes

Defines the collection interval for an agent that uses a different method (than those listed above) to monitor a storage device.

For information about the technologies used by Storage Collector agents to monitor the different kinds of storage devices, see “Configuring Agents to Monitor Storage Devices” in the Foglight for Storage Management Installation Guide.

Modifying Data Collection Schedules for Storage Collector Agents

NOTE: You require the Foglight for Storage Management role Administrator to perform tasks that affect agents.

The collection interval can be increased to reduce the collection frequency impact in busy environments. It is not recommended to reduce the performance collection interval to less than five minutes. You can change the schedule for all agents by editing the default schedule, or clone the default schedule to create and select a specific schedule for a Storage Collector agent.

2
Click Agent Status.
4
Click Edit > Edit Properties.
5
Select Modify the properties for this agent only.
8
Click Edit.
The Storage Collector-<scheduleName> dialog box opens.
10
Click Save Changes.
11
Close the Storage Collector-defaultSchedule dialog box.
12
Click Back to Agent Status.
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