Foglight for Storage Management Shared 6.3.0

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 26. 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 27. 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.

Summary of SAN Topology Objects

If you want to create new rules or custom dashboards, or if you want to browse the data directly instead of through the Storage & SAN dashboards, you need to know the names of devices, components, and metrics as they are stored in the Foglight for Storage Management Database Repository.

The following tables list the top-level storage devices and all child components, and identifies their topology object names. These lists are not comprehensive, rather they reflect the objects that you may need to reference if you are creating new rules or custom dashboards. For other objects, see the Data dashboard. For help navigating to the Data dashboard, see Locating SAN Topology Objects in Foglight for Storage Management.

Table 28. SAN Topology Objects
Device	Topology Object
Fabric	SanFabric
Fibre Channel Switch	SanFcSwitch
VSAN	SanVsan
Filer	SanFiler
Storage Array	SanStorageArray


Component	Topology Object
FC Switch Port	SanFcSwitchPort
FC Port (Arrays/Filers)	SanStorageSupplierPortFC
IP Port (Arrays/Filers)	SanStorageSupplierPortISCSI
InfiniBand Port (Arrays)	SanStorageSupplierPortIB
Controller	SanController
Disk	SanPhysicalDisk
LUN	SanLun
Member	SanMember
NASVolume	SanVolume
Pool or Aggregate	SanPool
Virtual Machine	SanStorageVirtualMachine
Logical Interface	SanLogicalInterface

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