Robocopy download windows 7 64 bit

I would expect the same batch file when run consecutively to backup an already backed up directory to give the same result, when the drive to be backed up has not changed. I have also used other programs to confirm that the 2 drives are identical. As far as I am concerned, the "robocopy" command only copy files with differences by default.

So if you tried the same copy again it would skip the ones that had already successfully copied. That may be the reason. We could have a test without this parameter to have a check. Here is a link for reference of using "Robocopy". I will get back to you on the main problem, BUT I wanted to quickly say that the link supplied is dated April 17 and is thus 3 years 8 months out of date.

That is correct, and since I had already carried out a complete 'copy', I also would have expected all the files to be skipped. Sorry to keep going on to a dead audience it appears , but there are so many unanswered bits and pieces about RoboCopy, that I hesitate to mention another obvious one.

I would expect that of the 27 directories, they were either Copied or Skipped. There is no explanation of how they are both? What does that mean? The more I look, the more I find - Occasionally the speed of the activity is included in the log, but not always. Why is that? According to my understanding, the robocopy is a feature included in the windows system later than Windows 7. So the theory should also be applied to all the later system editions. Are they the same as for the COPY option?

It only includes "T" parameter. For more information about the other parameters, please refer to the link I have posted before. I have made a test on my Windows 10 Enterprise 10 It works well. The number of the files detected are the same every time. Considering you are using a lot parameters, we could try to reduce the parameter to have a troubleshoot.

Correct, I agree with you The problem is that there are changes and an awful lot of detail about how it works and what the log means is missing. The documentation needs updating.

Your test is a very simplistic test, not really an example from the real world. I also note that as I commented earlier, even your result shows Total of 4 files of which 4 Copied and 4 Skipped? If either the source or desination are a "quoted long foldername" do not include a trailing backslash as this will be treated as an escape character, i.

When copying a large tree of multiple files and subfolders, it is likely some files will hit or even exceed the NTFS character limit. Even though Robocopy successfully copies such files, choosing a destination folder with a shorter name than the source folder, can avoid issues such as difficulty accessing the files with Windows Explorer. For a backup program this is usually the desired behaviour.

The Junction Point itself will not be copied, with or without these flags. These options accept any combination of the following letters, when several are specified, will match if any or all items match:. RoboCopy entirely relies on the SMB protocol for all networking needs.

Using SMB is the reason why RoboCopy can't influence the network throughput itself, but it can slow down its use. Introducing inter-packet delay is often the easiest way to control the load on the NAS. Once you introduce a delay, you can evaluate if your other apps can now work as expected.

This optimization strategy will allow you to find the optimal RoboCopy speed in your environment. RoboCopy will traverse the namespace it's pointed to and evaluate each file and folder for copy. Every file will be evaluated during an initial copy and during catch-up copies.

These repeated runs are useful to minimize downtime for users and apps, and to improve the overall success rate of files migrated. We often default to considering bandwidth as the most limiting factor in a migration - and that can be true. But the ability to enumerate a namespace can influence the total time to copy even more for larger namespaces with smaller files.

Consider that copying 1 TiB of small files will take considerably longer than copying 1 TiB of fewer but larger files. Assuming that all other variables remain the same.

The cause for this difference is the processing power needed to walk through a namespace. So when provisioning a machine specifically for RoboCopy, consider the number of processor cores and their relationship to the thread count they provide. Most common are two threads per core. Also consider how many RoboCopy jobs you plan to run in parallel on a given machine. More threads will copy our 1-TiB example of small files considerably faster than fewer threads. At the same time, the extra resource investment on our 1 TiB of larger files may not yield proportional benefits.

A high thread count will attempt to copy more of the large files over the network simultaneously. This extra network activity increases the probability of getting constrained by throughput or storage IOPS. During a first RoboCopy into an empty target or a differential run with lots of changed files, you are likely constrained by your network throughput.

Start with a high thread count for an initial run. A high thread count, even beyond your currently available threads on the machine, helps saturate the available network bandwidth. Fewer changes in a differential run mean less transport of data over the network. Your speed is now more dependent on your ability to process namespace items than to move them over the network link. For subsequent runs, match your thread count value to your processor core count and thread count per core.

Consider if cores need to be reserved for other tasks a production server may have. Avoid large-scale changes in your namespace. Especially ACL changes can have a high impact because they often have a cascading change effect on files lower in the folder hierarchy.

Consequences can be:. Another important aspect is to use the RoboCopy tool effectively. With the recommended RoboCopy script, you'll create and save a log file for errors. Copy errors can occur - that is normal. These errors often make it necessary to run multiple rounds of a copy tool like RoboCopy. You should be prepared to run multiple rounds of RoboCopy against a given namespace scope.

Successive runs will finish faster as they have less to copy but are constrained increasingly by the speed of processing the namespace.

When you run multiple rounds, you can speed up each round by not having RoboCopy try unreasonably hard to copy everything in a given run. These RoboCopy switches can make a significant difference:. In this example, a failed file will be retried five times, with five-second wait time between retries. If the file still fails to copy, the next RoboCopy job will try again. Often files that failed because they are in use or because of timeout issues might eventually be copied successfully this way.

There is more to discover about Azure file shares. The following articles help understand advanced options, best practices, and also contain troubleshooting help. These articles link to Azure file share documentation as appropriate. You should be all set! AzCopy vs. Migration goals The goal is to move the data from existing file share locations to Azure.

Migration overview The migration process consists of several phases. Tip If you are returning to this article, use the navigation on the right side to jump to the migration phase where you left off. Phase 1: Identify how many Azure file shares you need In this step, you're evaluating how many Azure file shares you need. Share grouping For example, if your human resources HR department has a total of 15 shares, you might consider storing all of the HR data in a single Azure file share.

Volume sync Azure File Sync supports syncing the root of a volume to an Azure file share. A lower number of items also benefits scenarios like these: Initial scan of the cloud content can complete faster, which in turn decreases the wait for the namespace to appear on an Azure File Sync-enabled server. Cloud-side restore from an Azure file share snapshot will be faster. Disaster recovery of an on-premises server can speed up significantly. Changes made directly in an Azure file share outside sync can be detected and synced faster.

A structured approach to a deployment map Before you deploy cloud storage in a later step, it's important to create a map between on-premises folders and Azure file shares. A server with the Azure File Sync agent installed can sync with up to 30 Azure file shares. There's a limit of storage accounts per subscription per Azure region. Tip With this information in mind, it often becomes necessary to group multiple top-level folders on your volumes into a common, new root directory.

Important The most important scale vector for Azure File Sync is the number of items files and folders that need to be synchronized. Create a mapping table Use a combination of the previous concepts to help determine how many Azure file shares you need, and which parts of your existing data will end up in which Azure file share.

Download a namespace-mapping template. Phase 2: Deploy Azure storage resources In this phase, consult the mapping table from Phase 1 and use it to provision the correct number of Azure storage accounts and file shares within them. Caution If you create an Azure file share that has a TiB limit, that share can only use locally redundant storage or zone-redundant storage redundancy options. Phase 3: Preparing to use Azure file shares With the information in this phase, you will be able to decide how your servers and users in Azure and outside of Azure will be enabled to utilize your Azure file shares.

Authentication: Configure Azure storage accounts for Kerberos authentication. Business continuity: Integration of Azure file shares into an existing environment often entails to preserve existing share addresses. If you are not already using DFS-Namespaces, consider establishing that in your environment.

You'd be able to keep share addresses your users and scripts use, unchanged. The video references dedicated documentation for some topics: Mounting an Azure file share Before you can use RoboCopy, you need to make the Azure file share accessible over SMB. Important Before you can successfully mount an Azure file share to a local Windows Server, you need to have completed Phase 3: Preparing to use Azure file shares.

Phase 4: RoboCopy The following RoboCopy command will copy only the differences updated files and folders from your source storage to your Azure file share. A high thread count helps saturate the available bandwidth. For subsequent runs match your thread count value to your processor core count and thread count per core. This switch works best in scenarios where it's already clear that there will be more RoboCopy runs.

If the file fails to copy in this run, the next RoboCopy job will try again. Often files that failed because they were in use or because of timeout issues, might eventually be copied successfully with this approach. It allows RoboCopy to move files that the current user doesn't have permissions to.

Empty subdirectories will be copied. Items files or folders that have changed or don't exist on the target will be copied. Items that exist on the target but not on the source will be purged deleted from the target.

When using this switch, it's imperative that you match source and target folder structure exactly. Only then can a 'catch up' copy be successful. Example - If between two RoboCopy runs a file experiences an ACL change and an attribute update: for instance, it's marked hidden. Auditing information cannot be stored in an Azure file share. Displaying the progress significantly lowers copy performance.

Improves copy performance. This switch is only useful for targets with tiered storage, that may run out of local capacity before RoboCopy can finish.