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Foglight for Storage Management Shared 4.6 - User and Reference Guide

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

Storage Capacity tab

The Storage Capacity tab includes charts and tables for monitoring the capacity being used by the all devices, pools, LUNs, NASVolumes, or aggregates. Select what you want to monitor by clicking one of the following button at the top of the view: All, Pools, LUNs, Volumes, or Aggregates.

The middle part of the view includes the Storage Capacity chart, which shows the pools with the scatter chart that uses Free as Y axis and Capacity Available Percent as X axis.

The lower part of the view includes the Storage Capacity table, which displays the following information for the selected option (All, Pools, LUNs, Volumes, or Aggregates).

 
Table 7. Storage Capacity table
Screen Element
Description

Name

Device name.

Click the name to open the device Summary tab.

Type

Device type.

Array/Filer

Array or filer name.

Time to Full

Time remaining until the maximum capacity is reached.

Health Score

Health score. For details about how health scores are calculated, see Pool and Volumes health scores.

Capacity Used (% Available)

Capacity currently used.

Free

Capacity currently available (free).

Total

Total device capacity.

Pool and Volumes health scores

Health scores are base on two criteria:

•
How much free space exists.
•
How much time is left until that space runs out.
Pool health scores

The code is in a derived metric, so that the heath scores are recalculated on the fly, whenever new data for a pool is submitted. The code works as follows:

Starting score: 75%

If long term (preferred) or short term predictive data is available, the starting score is reset:

< 14 days to full: set to 10%

< 28 days to full: set to 35%

< 84 days to full: set to 50%

> 300 days to full: set to 100%

> 200 days to full: set to 85%

> 100 days to full: set to 70%

From the starting score, the code adjusts the calculations based on the percent of free space available:

< 10%: score adjusted -30%

< 20%: score adjusted -20%

< 30%: score adjusted -10%

> 90%: score adjusted +30%

> 80%: score adjusted +20%

> 70%: score adjusted +10%

Any computed values over 100 are changed to 100%.

Any computed values < 0 are changed to 0%.

Volume health scores

Trending data for volumes is not available yet. Therefore, the health score is currently based solely on the currently available capacity.

 
* 
NOTE: Once the trending data becomes available for volumes, the same rules for calculating pool health score would apply to volumes as well.

The code works as follows:

Starting score: 75%

From the starting score, the code adjusts the calculations based on the percent of free space available:

< 10%: score adjusted -30%

< 20%: score adjusted -20%

< 30%: score adjusted -10%

> 90%: score adjusted +30%

> 80%: score adjusted +20%

> 70%: score adjusted +10%

Any computed values over 100 are changed to 100%.

Any computed values < 0 are changed to 0%.

Creating Storage Reports

In the Storage Environment dashboard, you can create reports to share with colleagues. You can also copy and edit existing reports. If the Reports tab is not displayed, your Foglight for Storage Management Administrator may need to modify your user account to include the General Access role.

 
* 
TIP: You can also use the Foglight for Storage Management Reports dashboard available from the Reports link at the top of all dashboards. For more information about this dashboard, see the Foglight User Guide.
To create a report:
1
On the Storage Environment dashboard, click the Insights tab, and then click Reports.
The Create a Report wizard opens. Use the Next and Back buttons to navigate between pages.
Follow the steps in the wizard to select a report template and specify report parameters.
2
Click Finish to generate the report.

 

Investigating Storage Devices

To find out more about the performance of a storage device and its components, you use the Storage Explorer dashboards.

This section covers the following topics:

•
Introducing the Storage Explorer
•
Exploring a Fabric
•
Exploring a Switch
•
Exploring a Cisco VSAN
•
Exploring a Filer
•
Exploring a Storage Array

Introducing the Storage Explorer

The Storage Explorer enables you to quickly find and examine any storage device in your storage environment. The Storage Explorer has a Topology tree—displayed in the navigation panel below the list of Dashboards—that contains branches for Fabrics, Filers, and Storage Arrays. The fabrics in the Fabrics branch can be expanded to show FC switches and VSANs. When you select a device from the tree, the Storage Explorer opens a dashboard displaying details about that device.

This walkthrough describes how to open the Storage Explorer and select a storage device. If you select a top-level device type node, such as Fabrics, the Storage Environment quick view is displayed. For more information about the quick view, see Monitoring Your Storage Environment.

To use the Storage Explorer:
1
On the navigation panel, under Dashboards, click Storage & SAN > Storage Explorer.
The Topology tree opens below the Dashboards area, containing a list of all monitored storage devices and their status.
2
On the navigation panel, under Topology, select a storage device. Details about the device and its components are displayed in a Storage Explorer dashboard.
All Storage Explorer dashboards have a similar organization.

 
Table 8. Storage Explorer dashboards contain the following common screen elements:
Screen Element
Description
Time Range

Displays and controls the period of time represented in the dashboard. The default is the last four hours. For more information, see “Time Range” in the online help.

Alarm Count

Displays counts of all the alarms at each severity level that are still active (not cleared) at the end of the displayed time range. Unlike the Alarm Summary view, the Alarm Count includes alarms for the device and all its child components. Click an alarm count to display the alarms at that severity level.

Summary Tab Views

When the Summary tab is selected:

•
The top view displays the same Related Inventory view and charts that are displayed for this device in the Storage Environment quick view.
•
The Summary and Resource Information view displays physical configuration details for the selected device.
•
The Alarm Summary displays device-level alarms (if any).
Component Tabs

Contains a tab for each type of component used by the selected device, such as ports, drives, and disks.

When a component tab is selected:

•
The top view displays key performance and/or capacity metrics for the components used by this device.
•
A Details view lists the components by name and displays physical configuration details.
•
The Alarm Summary displays component-level alarms (if any).
•
Other component-specific views may be present.
FAQts Tab

Contains questions appropriate for the selected device type. For information on how to use a FAQts tab, see Asking Questions About the Monitored Storage Environment.

Alarm Summary

Displays alarms for the selected device (on the Summary tab) or the type of component (on the Component tabs).

For information about each type of Storage Explorer dashboard, see the following topics:
•
Exploring a Fabric
•
Exploring a Switch
•
Exploring a Cisco VSAN
•
Exploring a Storage Array
•
Exploring a Filer
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