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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

Advanced Find

The tabs for specific entities (like LUNs, Disks, Pools, NASVolumes) quickly identify the Top 15 objects exhibiting the “worst” values for a particular metric. Often, however, there is a need to locate objects by name, or with other characteristics. Use the Advanced Find functionality to locate these items.

Queries can be constructed using a combination of Property conditions and Metric conditions.

Figure 6. Advanced Find
Using the Property Conditions
Finding Entities by Name
To find entities by name:
1
Select the desired entity type to search for in the Find drop down.
2
Type the string to search for in the Name Like field.
3
Click Perform Query.
•
All items with that string anywhere in their name will be returned.
•
_ is a positional wildcard, that can match a single character. For example, C_D would match decode, but would not match record
•
% is a non-positional wildcard. For example, C%D would match record
Finding Entities with Current Status or Physical State

To find entities with current status or physical state:

1
Select the desired entity type to search for in the Find drop down.
2
In Properties, check the status boxes to retrieve entities with that status or state.
3
Click Perform Query.
For example, This example searches for LUNs whose names include a particular string, and have a non-normal alarm state.
The query will take a short time to execute. When it completes, the Latest Query panel will summarize the query conditions. The Query Result panel will display the LUNs found to match the query conditions. The table header displays the time period used for evaluating the query conditions.
Figure 7. Query Conditions
Using the Metric Conditions

The metric conditions area lets you easily construct a more complex query that can include up to 3 conditions on metrics.

Figure 8. Metrics conditions
To use the metric conditions:
1
Period. Refers to the time range on the zonar displayed in the upper right-hand corner. Select the time the query should use for the metric values. When n/a is selected, this condition is ignored.
2
Metric. This drop down shows the metrics available for this entity type for this vendor.
3
The third drop down list provides the comparison operator.
4
Use the fourth field to enter the value to use for the comparison.
5
Use the fifth drop down to select the units for the value you entered. The units selection will change based on the type of metric selected.
6
Click the + icon if you want to add another condition. The next condition row will be preceded by a AND/OR selector. A trash can icon will appear to the right of the + icon to let you remove a condition.
Up to 3 conditions can be defined. When the + icon is clicked to display the 3rd condition row, parentheses will be displayed around the first 2 conditions, indicating the order of evaluation.
For example, the following query looks for LUNs that had low average latency during the period, but had a higher latency at the last collection.The query will take a short time to execute. When it completes:
•
The Latest Query panel will summarize the query conditions.
•
The Query Result panel will display the LUNs found to match the query conditions. The table header displays the time period used for evaluating the query conditions. The metrics used in the query conditions will be displayed in the results table.
To investigate further
•
Click the name of an entity in the table, to drill down to the explorer view for that entity.
•
Click on an alarm Status icon, to display the alarms for that entity.

 

 

Investigating Storage Components

To gain a complete picture of the performance of a storage device, you need to understand how its child components are performing.

This section covers the following topics:

•
Introducing Storage Component Dashboards
•
Investigating an Aggregate
•
Investigating an Array/Filer Port
•
Investigating a Controller
•
Investigating a Directory
•
Investigating an EqualLogic Member
•
Investigating an FC Switch Port
•
Investigating an Isilon Node
•
Investigating a LUN
•
Investigating a NASVolume
•
Investigating a Physical Disk
•
Investigating a Pool

Introducing Storage Component Dashboards

A component dashboard is a drill-down view that displays physical details about a selected component, performance and capacity metrics, and alarms. Some also include a topology diagram that shows how the component fits into the monitored environment; for more information, see Exploring Connectivity with SAN Topology Diagrams.

For information about each type of component dashboard, see the following topics:

•
Investigating an Aggregate
•
Investigating an Array/Filer Port
•
Investigating a Controller
•
Investigating a Directory
•
Investigating an EqualLogic Member
•
Investigating an FC Switch Port
•
Investigating an Isilon Node
•
Investigating a LUN
•
Investigating a NASVolume
•
Investigating a Physical Disk
•
Investigating a Pool

Investigating an Aggregate

The data displayed in the dashboard reflects values for the aggregate over the selected time range. This walkthrough describes the contents of each of the tabs.

To explore an aggregate:
1
On a dashboard, click an aggregate name.
The Aggregate dashboard opens.
2
Review overall performance in the Summary tab.
•
Aggregate Details. Displays the aggregate’s status, parent filer, health score, and current values for Advertised NASVolumes Size, Total Usable Capacity, Available Usable Capacity, Overcommitment, Data Rate, and Ops Rate. Click a Sparkline to plot metric values over the time period.
•
Pool Performance. Displays the same performance metrics found in the Aggregate Details view, but in chart format.
•
Perform Pool Change Analysis. Click to identify the NASVolumes and LUNs primarily responsible for increased I/O. For more information, see Analyzing the Pool.
•
Perform Pool Load Analysis. Click to identify the busiest NASVolumes and LUNs, and rank them based on their activity during the same time range over the last 30 days. For more information, see Analyzing the Pool.
3
Click the Capacity tab.
Displays the following:
•
Capacity Summary
•
Capacity Usage Trends: Chart provides a visual display of the estimated capacity consumption in the future, based on a regression analysis of the historical capacity consumption.
* 
NOTE: If time until full shows “n/a”, it means enough historical data has not been collected yet. Mouse over to show how much more data is required. For more information, see Capacity Trending.

4
Click the Consumers tab.
Displays the NASVolumes and LUNs that are configured out of this aggregate.
•
Aggregate Details. Displays the aggregate’s status, parent filer, and current values for Advertised LUNs Size, Advertised NASVolumes Size, Total Usable Capacity, Available Usable Capacity, and Overcommitment.
•
NASVolumes Using This Aggregate. For each volume, displays its name, status, physical state, and whether the NASVolume is used by an entity in the monitored environment. The metric columns display current values for Data Rate, Latency, Advertised NASVolumes Size, Used Capacity, and % Used. Click a Sparkline to plot metric values over the time period.
The remaining columns provide the following details:
- Protection. Displays the type of protection in use on the volume.
- Thin?. Indicates whether the volume is thin-provisioned (true) or thick-provisioned.
- vFiler. The name of the aggregate’s parent virtual filer.
•
LUNs Using This Aggregate. For each LUN, displays its name, status, physical state, and whether the LUN is used by an entity in the monitored environment. The metric columns display current values for Data Rate, Ops Rate, Latency, % Busy, and Advertised LUNs Size. Click a Sparkline to plot metric values over the time period.
The remaining columns provide the following details:
- Protection. Displays the type of protection in use on the LUN, such as the RAID level.
- Thin?. Indicates whether the LUN is thin-provisioned (true) or thick-provisioned.
- vFiler. The name of the aggregate’s parent virtual filer.
5
Click the Disks tab.
Displays the disks used by the selected aggregate.
6
To investigate further:
•
Click a NASVolume name. See Investigating a NASVolume (includes a topology diagram).
•
Click a LUN name. See Investigating a LUN (includes a topology diagram).
•
Click a disk name. See Investigating a Physical Disk.
•
Click an alarm. See Assessing Storage Alarms.
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