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Foglight for Storage Management Shared 4.4.5 - User and Reference Guide

Table of Contents

Getting Started

Introducing Foglight for Storage Management

Performance Monitoring Capacity Monitoring Connectivity and I/O Performance Monitoring

Navigating Foglight for Storage Management Verifying Storage Collector Agents are Collecting Storage Data

Collecting Storage Data for Virtualized Devices and Servers

Understanding Metric Data in Charts and Tables Modifying and Extending Data Collection Next Steps

Monitoring Storage Performance

Introducing the Storage Environment Dashboard Monitoring Your Storage Environment

Understanding Status, Alarms, and Rules in Foglight for Storage Management Reviewing the Status of All Devices Assessing Storage Alarms Monitoring Fabrics Monitoring Storage Arrays Monitoring Filers

Asking Questions About the Monitored Storage Environment Assessing Connectivity and I/O Performance

Introducing the Virtualization Dashboards Summary of Icons Used in Topology Diagrams Exploring Connectivity with SAN Topology Diagrams Exploring I/O Performance with SAN Data Paths

Monitoring Storage Capacity

Capacity Trending Evaluating Pool Capacity Environment Summary/Monitoring/Summary Capacity Reports Low Capacity Rule Storage Capacity tab

Creating Storage Reports

Investigating Storage Devices

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

Non-Clustered Storage Arrays Dell EqualLogic Storage Array EMC Isilon Storage Array

Common Data for Filers and Storage Arrays

LUNs tab Disks tab Advanced Find

Investigating Storage Components

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

Pool belonging to a non-clustered storage array or EqualLogic storage array

Pool belonging to a non-clustered storage array or EqualLogic storage array Pool belonging to an Isilon storage array

Common Component Disk Tab Data

Troubleshooting Storage Performance

Starting a Troubleshooting Investigation Analyzing Storage Issues Analyzing the Pool Changing Latency Thresholds Understanding the Troubleshooting Algorithm

Managing Data Collection, Rules, and Alarms

Collecting Virtual Storage-to-SAN Relationships Inferring Physical-Host-to-Storage Relationships

Enabling Dependency Processing Reviewing and Editing Host-Port Assignments Running Dependency Processing Manually Customizing Helper Strings for Dependency Processing Reviewing Inferred Hosts

Modifying Data Collection Schedules

Understanding Data Collection Types and Schedules

Topology collections Performance collections Default data collection schedules

Modifying Data Collection Schedules for Storage Collector Agents

Creating a unique schedule for an agent Assigning a Cloned Schedule to Another Agent

Managing Foglight for Storage Management Rules Managing Alarm Settings

Changing Alarm Sensitivity Configuring Email Notifications for Alarms

Troubleshooting Database Limits

Understanding Metrics

Units of Measurement Performance Metrics

Fabrics and FC Switches — Performance Metrics Storage Arrays and Filers — Disk I/O Performance Metrics Clustered Storage Arrays — Network Performance Metrics

Capacity Metrics

Storage Arrays — Array, Member, and Pool Capacity Metrics

EMC Isilon Only Capacity Metrics

Filers — Filer and Aggregate Capacity Metrics Storage Arrays and Filers — LUN, NASVolume, and Disk Capacity Metrics

Overview of Metrics in Foglight for Storage Management

Summary of SAN Topology Objects Locating SAN Topology Objects in Foglight for Storage Management

Online-Only Topics

Storage Environment Dashboard Storage Explorer Pool and Aggregate Dashboards

EMC Isilon Only Capacity Metrics

Isilon arrays provide additional metrics to describe the Isilon OneFS file system (IFS) capacity in terms of hard disk drive (HDD) and solid state drive (SSD) capacity.

Table 14. EMC Isilon only Capacity Metrics
Capacity Metric	Description	A	M	P	Topology Name
Total HDD Capacity	Raw capacity of the hard drives in the array, as reported by the vendor.				raw_capacity_HDD
Total SSD Capacity	Raw capacity of the solid-state drives in the array, as reported by the vendor.				raw_capacity_SSD
IFS Capacity: Total	Total capacity of the Isilon File System.				Array: pool_capacity_conf Pool: conf_capacity
IFS Capacity	= Total HDD Capacity + Total SSD Capacity Capacity of the Isilon File System on a pool or member/node.				conf_capacity
IFS Capacity: Free	Also IFS Free Free capacity of Isilon File system.				Array: pool_free_conf Pool and member: conf_available
IFS Capacity Used	= IFS Capacity - IFS Capacity: Free				Calculated
IFS Capacity: HDD Total	Capacity of Isilon File System on hard disk drives in an array, pool, or node.				conf_capacity_HDD
IFS Capacity: HDD Free	Free capacity of Isilon File System on hard disk drives in an array, pool, or node.				conf_available_HDD
IFS Capacity: HDD Used	= IFS Capacity: HDD Total - IFS Capacity: HDD Free				Calculated
IFS Capacity: SDD Total	Capacity of Isilon File System on solid state drives in an array, pool, or node.				conf_capacity_SSD
IFS Capacity: SDD Free	Free capacity of Isilon File System on solid state drives in an array, pool, or node.				conf_available_SSD
IFS Capacity: SDD Used	= IFS Capacity: SDD Total - IFS Capacity: SDD Free				Calculated
HDD % Free	= IFS Capacity: HDD Free / IFS Capacity: HDD Total				conf_pct_available_HDD
SDD % Free	= IFS Capacity: SDD Free / IFS Capacity: SDD Total				conf_pct_available_SSD

Filers — Filer and Aggregate Capacity Metrics

Foglight for Storage Management supports NetApp filers (F). NetApp uses the word aggregate (Ag) instead of pool, but the metrics collected for aggregates are similar to the metrics collected for pools.

Table 15. Filer and Aggregate Capacity Metrics
Capacity Metric	Description	F	Ag	Topology Name
Advertised LUNs Size	Also Total Advertised LUNs Size or Adv LUNs Size Sum of the Advertised LUN Size for all LUNs in the entity.			configured_lun_size
Advertised NASVolumes Size	Sum of the Advertised Size for all NASVolumes.			Filer: configured_vol_size Aggregate: conf_VolSize
Disk Capacity (Raw)	Also Total Disk Capacity Sum of the sizes of the disks in the filer. This includes spares.			disk_capacity
Free Disk/Spares Capacity (Raw)	Amount of disk capacity that has not been committed to an aggregate. Disk capacity cylinder coloring and capacity alarms are defined in registry variables with the prefix: StSAN.FilerDisks.PctUnallocatedCapacityThres hold...			disk_free
Aggr Capacity (Usable) Total	Also Total Usable Aggr Capacity Sum of the Total Usable Capacity of all the aggregates in the filer. Aggregate capacity cylinder coloring and alarms are defined in registry variables with the prefix: StSAN.FilerAggregates.PctUnallocatedCapacityThreshold...			pool_capacity_conf
Aggr Capacity (Usable) Free	Also Available Aggr Capacity Sum of the Available Usable Capacity in the aggregates. Usable means after applying RAID.			pool_free_conf
Aggr Capacity (Raw) Total	Also displayed as Aggregate Capacity (Raw) Sum of the raw capacity of all the aggregates in the filer.			pool_capacity_raw
Aggr Capacity (Raw) Free	Sum of the available raw capacity in all the aggregates.			pool_free_raw
Overcommitment	= Advertised NASVolumes Size – Aggr Capacity (Usable) Total Overcommitment reflects the minimum additional capacity needed in the aggregate to support the advertised capacity promised to thin-provisioned volumes and LUNs. When the value of overcommitment is greater than zero, you run the risk of I/O writes failing because of insufficient physical storage to support the demand.			conf_overcommitted
Total Usable Capacity	Total capacity of the aggregate in usable terms. Usable means after applying RAID.			conf_capacity
Available Usable Capacity	Also displayed as Available Capacity Capacity available in the aggregate that has not been committed to data, snapshots, or thick-provisioned volumes and LUNs, in usable terms. Usable means after applying RAID.			conf_available
Used Capacity	= Total Usable Capacity – Available Usable Capacity			conf_used
% Available	Also % Free = Available Usable Capacity / Total Usable Capacity			Calculated

Storage Arrays and Filers — LUN, NASVolume, and Disk Capacity Metrics

These metrics describe the capacity of LUNs, NASVolumes, and disks.

Table 16. LUN, NASVolume, and Disk Capacity Metrics
Capacity Metric	Description	L	N	D	Topology Name
Advertised LUN Size	Size of the LUN as advertised to the hosts connected to the LUN.				advertisedSize
Provisioned Usable Capacity	Capacity provisioned for LUN data. In a thin-provisioned LUN, this is the capacity used for data written to the LUN. In a thick-provisioned LUN, this is the capacity allocated to the LUN, and does not reflect data written.				size
Provisioned Raw Capacity	Capacity provisioned for LUN data in raw terms.				rawCapacity
Advertised Size	Size of the NASVolume as advertised to the host mounting the volume.				total_capacity
Free Capacity	Advertised Size – Used Capacity				available_capacity
Used Capacity	Capacity in volume committed to data, snapshots, etc. in usable terms.				used_capacity
% Used	= Used Capacity / Advertised Size				percent_used
Disk Size	Size of the disk in MBs. Disk capacity cylinder coloring and capacity alarms are defined in registry variables with the prefix: StSAN.FilerDisks.PctUnallocatedCapacityThreshold...				size

Overview of Metrics in Foglight for Storage Management

Metrics and data are saved in the Foglight for Storage Management database as properties of topology objects. Topology objects correspond to the types of storage devices and components being monitored in your storage environment.


	TIP: For in-depth information about the Foglight for Storage Management data model, see the Data Model Guide.

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