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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

EMC Isilon Storage Array

Foglight for Storage Management monitors EMC Isilon clusters. In the interface, clusters are categorized as Storage Arrays, and the nodes 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 Isilon 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 Isilon cluster.
The Storage Array dashboard opens with details for the selected Isilon cluster.
 
* 
TIP: You can also open this dashboard from the Storage Environment dashboard by selecting an Isilon 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 Isilon storage arrays:
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Related Inventory. Contains alarm summaries for the selected storage array and its member nodes, external ports, internal ports, pools, and disks.
•
IFS Capacity. The chart displays IFS Capacity: Free and IFS Capacity Used for the IFS file system. In addition, the following metrics pairs are displayed:
- IFS Capacity: Total and IFS Capacity: Free
- IFS Capacity: HDD Total and IFS Capacity: HDD Free
- IFS Capacity: SDD Total and IFS Capacity: SDD Free
•
Average CPU Busy %. Displays the aggregate value of % Busy for all nodes in the array over the time period.
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File System Throughput. Plots Data Read Rate and Data Write Rate to the file system over the time period.
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Disk System Throughput. Plots Data Read Rate and Data Write Rate to the disk over the time period.
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External Network Throughput. Plots the Rcv Data Rate and Send Data Rate for the external network over the time period.
 
* 
TIP: If you prefer to see the Send Util (% of max) and Rcv Util (% of max) based on the rated maximum speeds of the ports (actual port speeds are not available from Isilon arrays) in the external network, ask your Foglight for Storage Management Administrator to edit the registry variable StSAN_StoragePortShowUtilMax and set ISLN_E_IP=true.
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Internal Network Throughput. Plots the Rcv Data Rate and Send Data Rate for the internal network over the time period.
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Clients. Plots clients connected versus clients that are actively using the network over the time period.
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.
Use this tab to understand network utilization and packet errors by port.
External Network Summary
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Charts. Plot aggregated values for Send Data Rate and Rcv Data Rate, and Packet Errors % for the external network connections over the time period.
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Port Status Filter. Click this link to show only ports with a selected status in the Port Details table.
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Port Details. For each port used by the external network, identifies the port name, parent node, status, physical state, and current values for Send Data Rate, Rcv Data Rate, and Packet Errors %. Also displays the maximum speed of the port. Click a Sparkline to plot metric values over the time period.
 
* 
NOTE: When the registry variable StSAN_StoragePortShowUtilMax is set to show port utilization, this table also displays Rcv Util and Send Util.
•
Alarm Summary. Displays alarms on ports used by the external network.
Internal Network Summary
•
Charts. Plot aggregated values for Send Data Rate, Rcv Data Rate, and Packet Errors % for the internal network connections over the time period.
•
Port Status Filter. Click this link to show only ports with a selected status in the Port Details table.
•
Port Details. For each port used by the internal network, identifies the port name, parent node, status, physical state, and current values for Send Data Rate, Rcv Data Rate, and Packet Errors %. Also displays the maximum speed of the port. Click a Sparkline to plot metric values over the time period.
 
* 
NOTE: When the registry variable StSAN_StoragePortShowUtilMax is set to show port utilization, this table can also display Rcv Util and Send Util.
•
Alarm Summary. Displays alarms on the external network and its ports.
6
Click the Member Nodes tab.
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Top 5 Nodes. Displays the top five member nodes with the highest average value for Data Rate, Latency, and % Busy. The charts plot values over the time period, while the tables show the average and current values for each node.
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Node Status Filter. Click to show only member nodes with the selected status in the Node Details table.
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Node Details. For each member node, displays its name, status, physical state, and current values for Data Rate, % Busy, Latency, L2 Cache Hit Rate, IFS Capacity, and IFS Capacity: Free. Also displays the worst status of the node’s disks, external network ports, and internal network ports, and identifies the node’s parent pool. Click a Sparkline to plot metric values over the time period.
You can add the following metrics to the table by clicking the Customizer icon:
L1 Cache Hit Rate, Send Data Rate and Rcv Data Rate. You can also choose to display other Isilon details, such as Total Disk IOPS and Model.
•
Alarm Summary. Displays alarms on nodes.
7
Click the Pools tab.
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Top 5 Pools. Displays the top five pools with the highest average value for Data Rate and Latency, and the lowest average value for L2 Cache Hit Rate. The charts plot values over the time period, while the tables show the average and current values for each pool.
•
Pool Status Filter. Click to show only pools with the selected status in the Pool Details table.
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Pool Details. For each pool, displays its name, status, and current values for Data Rate, Latency, L2 Cache Hit Rate, IFS Capacity, IFS Capacity: Free, HDD % Free, and SDD % Free. Also displays the tier that the pool belongs to and the worst status of nodes associated with the pool. Click a Sparkline to plot metric values over the time period.
You can add the following metrics to the table by clicking the Customizer icon:
Ops Rate, % Busy, and L1 Cache Hit Rate.
•
Alarm Summary. Displays alarms on pools.
8
Click the IFS tab.
•
Current Capacity Usage. For each pool or tier, displays the following sets of metrics:
- IFS Capacity: HDD Total, IFS Capacity: HDD Used, IFS Capacity: HDD Free, and HDD % Free
- IFS Capacity: SDD Total, IFS Capacity: SDD Used, IFS Capacity: SDD Free, and SDD % Free
•
File System. Plots Data Read Rate and Data Write Rate values and Read Ops Rate and Write Ops Rate values for the file system over the time period.
9
Exported Directories. For each exported directory, states whether the directory is used in the monitored environment. When Used=true, you can click the directory name to view a topology diagram showing the datastores that mount the directoryClick the Disks tab.
10
To investigate further, click the name of a component on any tab:
•
Click a port name. See Investigating an Array/Filer Port.
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Click a member node name. See Investigating an Isilon Node.
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Click a pool name. See Investigating a Pool.
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When a directory is used in the monitored environment, click the directory name. See Investigating a Directory.
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Click an alarm. See Assessing Storage Alarms.
11
Click the Advanced Find tab to investigate a Disk that is not included in the Top 15 items on the Disks. Use the Advanced Find functionality to query for the desired items. For more information, see Advanced Find.

Common Data for Filers and Storage Arrays

LUNs tab

A LUN (logical unit) is the block storage element made available by an array or filer to a server.

•
Show LUNs With …
This view lets you quickly see the top 15 LUNs with a selected metric, averaged over the selected time period.
•
Selecting the time period “for current” shows the LUNs with the worst current metric.
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Selecting the time period “last 30 minutes, last hour, last 4 hours” shows the LUNs with the worst average values in that time period.
* 
NOTE: The selected time range 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: The metrics available in the drop down for selection include only the metrics made available by that particular array or filer vendor.
Click on a name in the table, and summary details about that item will be displayed in details panel below. This panel will display the exact time period of the completed collections in the selected time range.
To further investigate the selected LUN, click Explore in the details panel. See Investigating a LUN.
•
Alarm Summary. Displays alarms on LUNs, disks. To investigate further, click an alarm. See Assessing Storage Alarms.

LUNs tab

Common Data for Filers and Storage Arrays

A LUN (logical unit) is the block storage element made available by an array or filer to a server.

•
Show LUNs With …
This view lets you quickly see the top 15 LUNs with a selected metric, averaged over the selected time period.
•
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.
* 
NOTE: The selected time range 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: The metrics available in the drop down for selection include only the metrics made available by that particular array or filer vendor.
Click on a name in the table, and summary details about that item will be displayed in details panel below. This panel will display the exact time period of the completed collections in the selected time range.
To further investigate the selected LUN, click Explore in the details panel. See Investigating a LUN.
•
Alarm Summary. Displays alarms on LUNs, disks. To investigate further, click an alarm. See Assessing Storage Alarms.

Disks tab

•
Show Disks With...
This view lets you quickly see the top 15 disks with a selected metric, averaged over the selected time period.
•
Selecting the time period “for current” shows the disks with the worst current metric.
•
Selecting the time period “last 30 minutes, last hour, last 4 hours” shows the disks with the worst average values in that time period.
* 
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: The metrics available in the drop down for selection include only the metrics made available by that particular array or filer vendor.
Click on a name in the table, and summary details about that item will be displayed in the Details panel below. This panel will display the exact time period of the completed collections in the selected time range
To further investigate the selected disk, click Explore in the details panel. See Investigating a Physical Disk.
•
Alarm Summary. Displays alarms on disks. To investigate further, click an alarm. See Assessing Storage Alarms.
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