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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

Exploring a Storage Array

The Storage Explorer’s Storage Array dashboard contains information about the selected storage array and its child components.

The tabs displayed on the dashboard differ depending on the selected storage array:

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Non-Clustered Storage Arrays (supported storage arrays except EqualLogic and Isilon)
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Dell EqualLogic Storage Array
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EMC Isilon Storage Array
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EMC VPLEX Storage Array

Non-Clustered Storage Arrays

Most supported storage arrays are displayed as described in this walkthrough. If you are using Dell EqualLogic arrays, EMC Isilon arrays, or EMC VPLEX arrays, see Dell EqualLogic Storage Array, EMC Isilon Storage Array, or EMC VPLEX Storage Array instead.

This walkthrough describes the contents of each of the tabs and points you to where you can drill down for more details. The data displayed reflects values for the selected time range.

To explore storage arrays:
1
On the navigation panel, under Dashboards, click Storage & SAN > Storage Explorer.
2
On the navigation panel, under Topology, expand Storage Arrays and select a storage array.
The Storage Array dashboard opens with details for the selected storage array.
 
* 
TIP: You can also open this dashboard from the Storage Environment dashboard by selecting an EqualLogic storage array and clicking View in Explorer.
3
If the Alarm Count displays alarms, you may want to assess the alarms before continuing with this walkthrough. Click a status count to open a list of device and component alarms. For more information, see Assessing Storage Alarms.
4
In the Summary tab, review performance in terms of key metrics.
The Summary tab contains the same views as the Storage Array Summary (Selected Storage Array) quick view described in Monitoring Storage Arrays. In addition, the tab includes the following views:
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Summary and Resource Information. Displays physical details about the storage array.
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Alarm Summary. Displays alarms on the storage array.
5
Click the Controllers-Ports tab.
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Controllers. The charts display the controllers with the highest average Data Rate, Ops Rate, and % Busy, if available. The table displays current values for each of the charted metrics, plus Latency if available, and the most severe alarm status on the FC ports and IP ports associated with this controller.
•
Ports. Select a controller from the Show Ports for Controller list. The chart will display port utilization distribution, if the array provides the operating link speed of the ports. Otherwise, the Data Rate of the 3 busiest ports will be displayed. The tables will display all available current metrics for each port.
Alarm Summary. Displays alarms on controllers and ports.
To investigate further, click the name of a component:
•
Click an aggregate name. See Investigating an Aggregate.
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Click an alarm. See Assessing Storage Alarms.
6
Click the Pools tab.
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Show Top 15/All Pools/Pools w Thin LUNs With … This view lets you quickly see the top fifteen or all LUNs with a selected metric, averaged over the selected time period. The performance metrics that may be available for selection, depending on the array type, include:
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R/w latency
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Average queue depth
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Data rate
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Ops rate to disk
The capacity metrics that may be available for selection, depending on the array type, include:
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Least time until full
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Least or most available usable capacity
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Least or most available raw capacity
Selecting the time period “for current” shows the LUNs with the worst current metric.
Selecting the time period “last 30 minutes, last hour, last 4 hours” shows the LUNs with the worst average values in that time period. These time periods are available only for performance metrics.
* 
NOTE: The selected timerange looks at the average of values from collections that completed between the time at the end of the zonar, and the selected period before that.
The bars in the Average column show the values of the other items' metric relative to the first (highest) item.
* 
NOTE: Selecting Pools w Thin LUNs is useful for monitoring Pools whose available capacity can change quickly because it contains thin-provisioned LUNs.
Click on a name in the table to display summary details about that item in the details panel below. This panel displays the exact time period of the completed collections in the selected timerange.
* 
NOTE: For Hitachi USP and VSP arrays, only user created Dynamic Provisioning (DP) pools are monitored.
To further investigate the selected item, click “Explore” in the details panel.
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Alarm Summary. Displays alarms on pools.
To investigate further, click an alarm. See Assessing Storage Alarms.
7
Click the LUNs tab.
8
Click the Disks tab.
9
Click the Advanced Find tab to investigate a LUN or Disk that is not included in the Top 15 items on the LUNs or Disks. Use the Advanced Find functionality to query for the desired items. For more information, see Advanced Find.

Dell EqualLogic Storage Array

Foglight for Storage Management monitors Dell EqualLogic array groups. In the interface, groups are categorized as Storage Arrays, and array members are called Member Nodes or simply Members.

This walkthrough describes the contents of each of the tabs and points you to where you can drill down for more details. The data displayed reflects values for the selected time range.

To explore an EqualLogic storage array:
1
On the navigation panel, under Dashboards, click Storage & SAN > Storage Explorer.
2
On the navigation panel, under Topology, expand Storage Arrays and select an EqualLogic group.
The Storage Array dashboard opens with details for the selected EqualLogic group.
 
* 
TIP: You can also open this dashboard from the Storage Environment dashboard by selecting a storage array and clicking View in Explorer.
3
If the Alarm Count displays alarms, you may want to assess the alarms before continuing with this walkthrough. Click a status count to open a list of device and component alarms. For more information, see Assessing Storage Alarms.
4
In the Summary tab, review performance in terms of key metrics.
The Storage Explorer’s Summary tab contains the same views as the Storage Environment’s quick view for EqualLogic storage arrays:
•
Related Inventory. Contains alarm summaries for the selected storage array and its member nodes, IP ports, pools, LUNs, and disks.
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Storage Capacity Summary. Displays current values for Total Advertised LUNs Size and Capacity Provisioned to LUNs.
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Network Ports Utilization. Plots aggregated current values for Send Util and Rcv Util over the time period.
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Pools with Severe or High Pressure on Available Usable Capacity:
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Displays the pools that have the most significant, near-term capacity issues.
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Shows the available usable capacity in the table, the % available, and over commitment.
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Shows the estimated time when the pool capacity will be full, if available.
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The cylinders are colored to show the % of available capacity in the pool.
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LUNs/Disks States. Plots the percentage of disks and LUNs in the storage array in problem states. Problem states are reported by the vendor. Resolving these issues may improve LUN performance.
In addition, the tab includes the following views:
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Summary and Resource Information. Displays physical details about the storage array.
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Alarm Summary. Displays alarms on the storage array.
5
Click the Network tab.
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Network Summary. Identifies the load on the network, in terms of Send Util and Rcv Util, and the Packet Errors % over the time period.
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Port Status Filter. Click to show only ports with the selected status in the Port Details table.
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Port Details. For each member-plus-port combination, displays current values for Data Rate, Send Util, Rcv Util, Packet Errors %, and Link Speed. Click a Sparkline to plot metric values over the time period. Also displays the member’s IPv4 and IPv6 addresses, if available.
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Alarm Summary. Displays alarms on ports.
6
Click the Pools-Members tab.
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Highest charts. Display the pools with the highest average value for Ops Rate and Latency. Also shows aggregated values for Total Advertised LUNs Size and Capacity Provisioned to LUNs for all members.
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Pool Details. For each pool, displays its name, status, and current values for Data Rate, Ops Rate, Latency, Average Queue Depth, Total Advertised LUNs Size, Total Usable Capacity, Available Usable Capacity, Capacity Provisioned to LUNs, and Overcommitment. Click a Sparkline to plot metric values over the time period. Also identifies pool members.
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Member Details. For each member, displays its name, parent pool, status, and current values for Data Rate, Ops Rate, Latency, Send Util, Rcv Util, Total Usable Capacity, % Used, and % of Pool. Also displays the RAID level in use for the member.
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Alarm Summary. Displays alarms on pools and members.
7
Click the LUNs tab.
8
Click the Disks tab.
9
To investigate further, click the name of a component on any tab:
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Click a port name. See Investigating an Array/Filer Port.
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Click an array member name. See Investigating an EqualLogic Member.
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Click a pool name. See Investigating a Pool.
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Click an alarm. See Assessing Storage Alarms.
10
Click the Advanced Find tab to investigate a LUN or Disk that is not included in the Top 15 items on the LUNs or Disks. Use the Advanced Find functionality to query for the desired items. For more information, see Advanced Find.

EMC VPLEX Storage Array

Foglight for Storage Management monitors EMC VPLEX clusters. In the interface, clusters are categorized as Vplex Clusters.

This walkthrough describes the contents of each of the tabs and points you to where you can drill down for more details. The data displayed reflects values for the selected time range.

To explore a VPLEX storage array:
1
On the navigation panel, under Dashboards, click Storage & SAN > Storage Explorer.
2
On the navigation panel, under Topology, expand VPlex Clusters and select a VPLEX cluster.
The Clusters dashboard opens with details for the selected VPLEX cluster.
 
* 
TIP: You can also open this dashboard from the Storage Environment >Virtualization dashboard by selecting an VPLEX storage array and clicking View in Explorer.
3
If the Alarm Count displays alarms, you may want to assess the alarms before continuing with this walkthrough. Click a status count to open a list of device and component alarms. For more information, see Assessing Storage Alarms.
4
In the Summary tab, review performance in terms of key metrics.
The Storage Explorer’s Summary tab contains the same views as the Storage Environment’s quick view for VPLEX storage arrays:
•
Related Inventory. Contains alarm summaries for the selected cluster and its directors, frontend ports, backend ports, virtual volumes, storage volumes, storage arrays, and fabrics.
•
Top directors charts. Lists top 3 directors by CPU usage, Heap Usage, Data Rate and Ops.
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Engine Information. Displays physical details about the VPLEX array.
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Alarm Summary. Displays alarms on the VPLEX array.
5
Click the Storage Volumes tab.
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Top 5 Storage Volumes. Lists top 5 storage volumes of highest average latency.
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Storage Volumes Status Filter: Click to show only storage volumes with the selected status in the Storage Volumes Detail table.
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Storage Volumes Detail table. For each storage volume, displays its name, status, IO status, Operational Status, Source, Capacity, Latency, and LUN used by this storage volume.
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Alarm Summary. Displays alarms on the Storage Volume.
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To investigate further, see Investigating a Storage Volume .
 
6
Click the Directors - Ports tab.
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Top 3 Directors. Displays the top three back-end/front-end directors with the highest average value for Data Rate, Operations, and Errors. The charts plot values over the time period, while the tables show the average and current values for each director.
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Top 3 Ports. Displays the top three back-end/front-end ports with the highest read and writer bytes. The charts plot values over the time period, while the tables show the average and current values for each port.
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Backend Ports table for each director.
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Frontend Ports table for each director.
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Alarm Summary. Displays alarms on directors.
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To investigate further, see Investigating Director - Ports .
7
Click the Virtual Volumes tab.
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Top 5 Virtual Volumes. Displays the top five virtual volumes by Data Rate, Average Latency and Ops Rate.
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Virtual Volumes Status Filter: Click to show only virtual volumes with the selected status in the Virtual Volumes Detail table.
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Virtual Volumes Detail table. For each virtual volume, displays its name, status, Operational State, Health State, Supporting Device, Latency, Data Rate, Ops Rate, and Capacity.
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Alarm Summary. Displays alarms on virtual volumes.
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To investigate further, see Investigating a Storage Volume .
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