Get-Dfsr Backlog

Module:
dfsr
Retrieves the list of pending file updates between two DFS Replication partners.

Syntax 

Get-DfsrBacklog
   [[-GroupName] <String[]>]
   [[-FolderName] <String[]>]
   [-SourceComputerName] <String>
   [-DestinationComputerName] <String>
   [<CommonParameters>]

Description

The Get-DfrsBacklog cmdlet retrieves pending updates between two computers that participate in Distributed File System (DFS) Replication.

Updates can be new, modified, or deleted files and folders. The maximum number of files that this command displays is 100. The Verbose parameter displays a count of all backlogged updates. Any files or folders listed in the DFS Replication backlog have not yet replicated from the source computer to the destination computer. This is not necessarily an indication of problems. A backlog indicates latency, and a backlog may be expected in your environment, depending on configuration, rate of change, network, and other factors.

Examples

Example 1: Retrieve unreplicated changes 

PS C:\> Get-DfsrBacklog -SourceComputerName "SRV02" -GroupName "RG01" -FolderName "RF1A"

Identifier                  : {DCE7FC28-5584-4D5D-BC84-2BD9D53CC2FC}-v538
Flags                       : 5
Attributes                  : 32
GlobalVersionSequenceNumber : {DCE7FC28-5584-4D5D-BC84-2BD9D53CC2FC}-v538
UpdateSequenceNumber        : 71576496
ParentId                    : {997D8F76-1207-49D7-85C9-DED015105A2F}-v1
FileId                      : 562949953495210
Volume                      : \\.\C:
Fence                       : 3
Clock                       : 130078672846368199
CreateTime                  : 3/15/2013 5:28:04 PM
UpdateTime                  : 3/15/2013 5:28:04 PM
FileHash                    : 173b51c11257a2eb 8c05884560fcfd1d
FileName                    : diskraid.exe
FullPathName                : c:\rf1a\diskraid.exe
Index                       : 1
ReplicatedFolderId          : 997d8f76-1207-49d7-85c9-ded015105a2f

Identifier                  : {DCE7FC28-5584-4D5D-BC84-2BD9D53CC2FC}-v539
Flags                       : 5
Attributes                  : 32
GlobalVersionSequenceNumber : {DCE7FC28-5584-4D5D-BC84-2BD9D53CC2FC}-v539
UpdateSequenceNumber        : 71577024
ParentId                    : {997D8F76-1207-49D7-85C9-DED015105A2F}-v1
FileId                      : 562949953495211
Volume                      : \\.\C:
Fence                       : 3
Clock                       : 130078672846524997
CreateTime                  : 3/15/2013 5:28:04 PM
UpdateTime                  : 3/15/2013 5:28:04 PM
FileHash                    : 6bcd377edf35e621 a7927703c08545d8
FileName                    : diskshadow.exe
FullPathName                : c:\rf1a\diskshadow.exe
Index                       : 2
ReplicatedFolderId          : 997d8f76-1207-49d7-85c9-ded015105a2f

This command retrieves the first 100 unreplicated changes between the local computer and the upstream computer SRV02 for the replication group RG01 and the replicated folder RF1A. The command displays all file metadata.

Example 2: Retrieve unreplicated changes between upstream and downstream computers 

PS C:\> Get-DfsrBacklog -DestinationComputerName "SRV1" -SourceComputerName "SRV02" -GroupName "RG01" -FolderName "RF1" | format-table fullpathname,updatetime

FullPathName                      UpdateTime
------------                      ----------
c:\rf1a\imageres.dll       3/15/2013 5:28:45 PM
c:\rf1a\mshtml.dll         3/15/2013 5:28:50 PM

This command retrieves the first 100 unreplicated changes between the downstream computer SRV1 and the upstream computer SRV02 for the replication group RG01 and the replicated folder RF1. The command also formats the output into a table that contains only the file paths and modification dates on the upstream server

Example 3: Retrieve unreplicated changes count to display 

PS C:\> Get-DfsrBacklog -GroupName "RG01" -FolderName "RF01" -SourceComputerName "SRV01" -DestinationComputerName "SRV02" -Verbose

The replicated folder has a backlog of files. Replicated folder: "RF01". Count: 2400

This command retrieves the total count of unreplicated changes between the downstream computer SRV02 and the upstream computer SRV01 for the replication group RG01 and the replicated folder RF01. The command displays this output in the verbose stream.

Example 4: Retrieve unreplicated changes count to a string object 

PS C:\> (Get-DfsrBacklog -GroupName "RG01" -FolderName "RF01" -SourceComputerName "SRV01" -DestinationComputerName "SRV02" -Verbose 4>&1).Message.Split(':')[2] 

2400

This command retrieves the total count of unreplicated changes between the downstream computer SRV02 and the upstream computer SRV01 for the replication group RG01 and the replicated folder RF01. The command converts the verbose stream data into a text string containing only the count, for later manipulation.

Example 5: Retrieve unreplicated changes count to a file 

PS C:\> Get-DfsrBacklog -GroupName "RG01" -FolderName "RF01" -SourceComputerName "SRV01" -DestinationComputerName "SRV02" -Verbose 4> verbose.txt > null
PS C:\> Get-Content .\verbose.txt

The replicated folder has a backlog of files. Replicated folder: "RF01". Count: 2400

This command retrieves the total count of unreplicated changes between the downstream computer SRV02 and the upstream computer SRV01 for the replication group RG01 and the replicated folder RF01. The command converts the verbose stream data into a text string containing only the count, for later manipulation.

Required Parameters

-DestinationComputerName

Specifies the name of the receiving computer. A destination computer is also called an inbound or downstream computer. If you do not specify this parameter, the cmdlet uses the local computer.

Type: String
Aliases: ReceivingMember, RMem
Position: 3
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False
-SourceComputerName

Specifies the name of the sending computer. A source computer is also called an outbound or upstream computer.

Type: String
Aliases: SendingMember, SMem
Position: 2
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False

Optional Parameters

-FolderName

Specifies an array of names of replicated folders. If you do not specify this parameter, the cmdlet queries for all participating replicated folders. You can specify multiple folders, separated by commas, as well as wildcard characters (*).

Type: String[]
Aliases: RF, RfName
Position: 1
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False
-GroupName

Specifies an array of names of replication groups. If you do not specify this parameter, the cmdlet queries for all participating replications groups. You can use a comma separated list and the wildcard character (*).

Type: String[]
Aliases: RG, RgName
Position: 0
Default value: None
Accept pipeline input: True (ByPropertyName, ByValue)
Accept wildcard characters: False

Inputs

Microsoft.DistributedFileSystemReplication.DfsReplicationGroup, Microsoft.DistributedFileSystemReplication.DfsReplicatedFolder, String computerName

Outputs

Microsoft.DistributedFileSystemReplication.DfsrIdRecord