Applies to: Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, Windows Server 2008 R2, Windows Server 2008
Nov 08, 2012 The /B tells robocopy to copy the file in 'backup' mode which is a special file access method designed to allow the backup of a file by users who do not have read access to the file. I would not recommend unlocking a file prior to backing it up unless you are 110% sure the file will not be modified whilst it is being copied. Mar 12, 2020 Here, the xcopy command is used to copy all the files, subfolders, and files contained in the subfolders /s from source of C:Videos to the destination folder Media Backup located on a computer on the network by the name of SERVER.We're copying some really large video files, so buffering should be disabled to improve the copy process /j, and since we're copying over the network, we want.
Note When a member of the Backup Operators group runs the Robocopy.exe utility together with the /B option to copy a file, everything should be copied. The member should have access to the file security configuration information even if the member does not have permissions to the file or ownership of the file. Sep 05, 2018 Robocopy copied the permissions for the files that had changed or been added since the seeding, but it did not fix the security permissions for the files that had not changed. This is by design as Robocopy only copies permissions when it copies a file. In order to reevaluate the permissions, the /SECFIX parameter must be added.
This topic explains how to use the command-line tool, Robocopy.exe, to pre-seed files when setting up replication for Distributed File System (DFS) Replication (also known as DFSR or DFS-R) in Windows Server. Practice playing blackjack. By pre-seeding files before you set up DFS Replication, add a new replication partner, or replace a server, you can speed up initial synchronization and enable cloning of the DFS Replication database in Windows Server 2012 R2. The Robocopy method is one of several pre-seeding methods; for an overview, see Step 1: pre-seed files for DFS Replication.
The Robocopy (Robust File Copy) command-line utility is included with Windows Server. The utility provides extensive options that include copying security, backup API support, retry capabilities, and logging. Later versions include multi-threading and un-buffered I/O support.
Important
Robocopy does not copy exclusively locked files. If users tend to lock many files for long periods on your file servers, consider using a different pre-seeding method. pre-seeding does not require a perfect match between file lists on the source and destination servers, but the more files that do not exist when initial synchronization is performed for DFS Replication, the less effective pre-seeding is. To minimize lock conflicts, use Robocopy during non-peak hours for your organization. Always examine the Robocopy logs after pre-seeding to ensure that you understand which files were skipped because of exclusive locks.
To use Robocopy to pre-seed files for DFS Replication, follow these steps:
Because pre-seeding does not directly involve DFS Replication, you only need to meet the requirements for performing a file copy with Robocopy.
You need an account that's a member of the local Administrators group on both the source and destination servers.
Install the most recent version of Robocopy on the server that you will use to copy the files—either the source server or the destination server; you will need to install the most recent version for the operating system version. For instructions, see Step 2: Stabilize files that will be replicated. Unless you are pre-seeding files from a server running Windows Server 2003 R2, you can run Robocopy on either the source or destination server. Voot zee kannada kamali serial. The destination server, which typically has the more recent operating system version, gives you access to the most recent version of Robocopy.
Ensure that sufficient storage space is available on the destination drive. Do not create a folder on the path that you plan to copy to: Robocopy must create the root folder.
Note
When you decide how much space to allocate for the pre-seeded files, consider expected data growth over time and storage requirements for DFS Replication. For planning help, see Edit the Quota Size of the Staging Folder and Conflict and Deleted Folder in Managing DFS Replication.
On the source server, optionally install Process Monitor or Process Explorer, which you can use to check for applications that are locking files. For download information, see Process Monitor and Process Explorer.
Before you use Robocopy to pre-seed files, you should download and install the latest version of Robocopy.exe. Mccormick cx 95 repair manual. This ensures that DFS Replication doesn't skip files because of issues within Robocopy's shipping versions.
The source for the latest compatible Robocopy version depends on the version of Windows Server that is running on the server. For information about downloading the hotfix with the most recent version of Robocopy for Windows Server 2008 R2 or Windows Server 2008, see List of currently available hotfixes for Distributed File System (DFS) technologies in Windows Server 2008 and in Windows Server 2008 R2.
Alternatively, you can locate and install the latest hotfix for an operating system by taking the following steps.
In a web browser, open https://support.microsoft.com.
In Search Support, enter the following string, replacing <operating system version> with the appropriate operating system, then press the Enter key:
robocopy.exe kbqfe '<operating system version>'
For example, enter robocopy.exe kbqfe 'Windows Server 2008 R2'.
Locate and download the hotfix with the highest ID number (that is, the latest version).
Install the hotfix on the server.
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After you install the latest version of Robocopy on the server, you should prevent locked files from blocking copying by using the methods described in the following table. Most applications do not exclusively lock files. However, during normal operations, a small percentage of files might be locked on file servers.
| Source of the lock | Explanation | Mitigation |
|---|---|---|
| Users remotely open files on shares. | Employees connect to a standard file server and edit documents, multimedia content, or other files. Sometimes referred to as the traditional home folder or shared data workloads. | Only perform Robocopy operations during off-peak, non-business hours. This minimizes the number of files that Robocopy must skip during pre-seeding. Consider temporarily setting Read-only access on the file shares that will be replicated by using the Windows PowerShell Grant-SmbShareAccess and Close-SmbSession cmdlets. If you set permissions for a common group such as Everyone or Authenticated Users to READ, standard users might be less likely to open files with exclusive locks (if their applications detect the Read-only access when files are opened). You might also consider setting a temporary firewall rule for SMB port 445 inbound to that server to block access to files or use the Block-SmbShareAccess cmdlet. However, both of these methods are very disruptive to user operations. |
| Applications open files local. | Application workloads running on a file server sometimes lock files. | Temporarily disable or uninstall the applications that are locking files. You can use Process Monitor or Process Explorer to determine which applications are locking files. To download Process Monitor or Process Explorer, visit the Process Monitor and Process Explorer pages. |
After you minimize locks on the files that will be replicated, you can pre-seed the files from the source server to the destination server.
Note
You can run Robocopy on either the source computer or the destination computer. Read receipt in outlook for mac 2015. The following procedure describes running Robocopy on the destination server, which typically is running a more recent operating system, to take advantage of any additional Robocopy capabilities that the more recent operating system might provide.
Sign in to the destination server with an account that's a member of the local Administrators group on both the source and destination servers. Great blue slot game.
Open an elevated command prompt.
To pre-seed the files from the source to destination server, run the following command, substituting your own source, destination, and log file paths for the bracketed values:
This command copies all contents of the source folder to the destination folder, with the following parameters:
| Parameter | Description |
|---|---|
| '<source replicated folder path>' | Specifies the source folder to pre-seed on the destination server. |
| '<destination replicated folder path>' | Specifies the path to the folder that will store the pre-seeded files. The destination folder must not already exist on the destination server. To get matching file hashes, Robocopy must create the root folder when it pre-seeds the files. |
| /e | Copies subdirectories and their files, as well as empty subdirectories. |
| /b | Copies files in Backup mode. |
| /copyall | Copies all file information, including data, attributes, time stamps, the NTFS access control list (ACL), owner information, and auditing information. |
| /r:6 | Retries the operation six times when an error occurs. |
| /w:5 | Waits 5 seconds between retries. |
| MT:64 | Copies 64 files simultaneously. |
| /xd DfsrPrivate | Excludes the DfsrPrivate folder. |
| /tee | Writes status output to the console window, as well as to the log file. |
| /log <log file path> | Specifies the log file to write. Overwrites the file's existing contents. (To append the entries to the existing log file, use /log+ <log file path>.) |
| /v | Produces verbose output that includes skipped files. |
For example, the following command replicates files from the source replicated folder, E:RF01, to data drive D on the destination server:
Note
We recommend that you use the parameters described above when you use Robocopy to pre-seed files for DFS Replication. However, you can change some of their values or add additional parameters. For example, you might find out through testing that you have the capacity to set a higher value (thread count) for the /MT parameter. Also, if you'll primarily replicate larger files, you might be able to increase copy performance by adding the /j option for unbuffered I/O. For more information about Robocopy parameters, see the Robocopy command-line reference.
Warning
To avoid potential data loss when you use Robocopy to pre-seed files for DFS Replication, do not make the following changes to the recommended parameters:
After copying completes, examine the log for any errors or skipped files. Use Robocopy to copy any skipped files individually instead of recopying the entire set of files. If files were skipped because of exclusive locks, either try copying individual files with Robocopy later, or accept that those files will require over-the-wire replication by DFS Replication during initial synchronization.
After you complete the initial copy, and use Robocopy to resolve issues with as many skipped files as possible, you will use the Get-DfsrFileHash cmdlet in Windows PowerShell or the Dfsrdiag command to validate the pre-seeded files by comparing file hashes on the source and destination servers. For detailed instructions, see Step 2: Validate pre-seeded Files for DFS Replication.
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