The Get-StorageQoSFlow cmdlet retrieves performance metrics on an I/O flow that is monitored by Storage Quality of Service (Storage QoS).
The metrics are throughput and latency averages, computed over a 5-minute rolling time interval.
Each file handle opened by a server that runs Hyper-V to a VHD or VHDX file is considered a flow.
If a virtual machine has two virtual hard disks attached, it will have 1 flow to the file server cluster per file.
If a VHDX is shared with multiple virtual machines, it will have 1 flow per virtual machine.
For more information about Storage QoS, see Storage Quality of Service in Windows Server Technical Previewhttps://technet.microsoft.com/en-us/library/Mt126108 (https://technet.microsoft.com/en-us/library/Mt126108).
This command gets information about all flow initiators accessing C:\ClusterStorage\Volume01\TEST.
Parameters
-AsJob
Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to complete.
Parameter properties
Type:
SwitchParameter
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
(All)
Position:
Named
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
-CimSession
Runs the cmdlet in a remote session or on a remote computer.
Enter a computer name or a session object, such as the output of a New-CimSession or Get-CimSession cmdlet.
The default is the current session on the local computer.
Parameter properties
Type:
CimSession
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
(All)
Position:
Named
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
-FilePath
Specifies the path of the file that a flow accesses.
Parameter properties
Type:
String
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
Arguments
Position:
2
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
-FlowId
Specifies the GUID that identifies the flow.
This identifier is not unique across flow objects, because the same logical flow may be split across several volumes or storage nodes.
Parameter properties
Type:
Guid
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
Arguments
Position:
0
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
-IncludeHidden
Indicates that this cmdlet includes the default flow, which groups together all flows not governed by a policy.
Parameter properties
Type:
SwitchParameter
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
Arguments
Position:
8
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
-InitiatorId
Identifies the virtual machine that is the initiator of the flow.
Parameter properties
Type:
String
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
Arguments
Position:
1
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
-InitiatorName
Specifies the friendly name of the initiator.
Parameter properties
Type:
String
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
Arguments
Position:
4
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
-InitiatorNodeName
Specifies the hostname of the node initiating the flow.
Parameter properties
Type:
String
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
Arguments
Position:
5
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
-Policy
Specifies a policy for which to get associated flows.
Parameter properties
Type:
CimInstance
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
Object
Position:
9
Mandatory:
True
Value from pipeline:
True
Value from pipeline by property name:
False
Value from remaining arguments:
False
-Status
Specifies the status of the flow.
Ok indicates that the flow meets the minimum Input/Output Operations Per Second (IOPS).
InsufficientThroughput indicates that the IOPS are below the minimum.
Specifies the hostname of the storage node servicing the flow.
Parameter properties
Type:
String
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
Arguments
Position:
6
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
-ThrottleLimit
Specifies the maximum number of concurrent operations that can be established to run the cmdlet.
If this parameter is omitted or a value of 0 is entered, then Windows PowerShell® calculates an optimum throttle limit for the cmdlet based on the number of CIM cmdlets that are running on the computer.
The throttle limit applies only to the current cmdlet, not to the session or to the computer.
Parameter properties
Type:
Int32
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
(All)
Position:
Named
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
-VolumeId
Specifies the ID of a volume that the flow accesses.
Parameter properties
Type:
String
Default value:
None
Supports wildcards:
False
DontShow:
False
Parameter sets
Arguments
Position:
3
Mandatory:
False
Value from pipeline:
False
Value from pipeline by property name:
False
Value from remaining arguments:
False
CommonParameters
This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable,
-InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable,
-ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see
about_CommonParameters.