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To use only COM and never fall back to robocopy, use the parameter -ComOnly. Using the -RoboOnly parameter will cause the script to never use COM, only robocopy, always giving file count and directory count as well as sizes.
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You can set the number of threads, between 1-128, with the -RoboThreadCount parameter. This will usually be a bit slower than COM, but after I increased the thread count to 16 from the default of 8, robocopy actually outperforms COM in some cases according to the screenshot below.
#Robocopy server 2012 r2 download full#
If you need all the data for all objects, regardless of full access, you can use the -RoboOnly parameter. The COM output is less detailed, but you can add -RoboOnly (see below) to always have full details, if needed, (possibly/usually) at the expense of speed. Screenshot ExampleHere's an example with the default behaviour, which is COM first, with a fallback to robocopy if access is denied to one or more files or folders. It works fine with the native robocopy.exe on 2008 R R2 (English only!).
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I have also come across "Support Tools" folders (in the Program Files folder) in $Env:Path containing an incompatible version of robocopy which didn't support the /bytes parameter (causing me to rename it so it went to the one in the Windows directory instead, which works).
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You could edit the regexes in the script to support "your" language for the header line and the start of the other lines. I tried tweaking the current "culture" (language) in the PS session, but haven't had any luck so far in forcing English output from robocopy.exe. One thing I quickly became aware of when a Norwegian coworker tested the code, is that robocopy's output needs to be in English for the fallback to work, and when he got it in Norwegian, he got the warning about an unexpected format.
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The code can also serve as a basic example of how to parse the robocopy.exe summary report. Parsing text is somewhat of a skill of mine, so when I wrote the robocopy part, I cooked up some logic and a regex to extract what I think are the presumably relevant details in addition to the folder size from the robocopy summary. Both these methods also suffer from the long path limitation.ĬPU usage seems to be at around 35-50 % while it's processing with robocopy.exe (-RoboOnly will force it) on my desktop with four cores, which is also running other stuff. NET methods for listing files and folders with some form of recursion. The alternatives being Get-ChildItem in conjunction with Measure-Object or some such (although fine for certain situations), and. The robocopy fallback does not have problems with long paths either, and although slower than COM, it enumerates the files and folders blazingly fast compared to the alternatives. The default is now the COM method which does not have long path problems. Read Boe's post for more background information and details. The fallback to robocopy.exe was inspired by Boe Prox' post on using robocopy.exe to avoid the 248-260 max path character limitation (PathTooLong exception) seen with Get-ChildItem, and to still be able to list items in deep directory structures. PowerShell version 2 comes in-the-box with Server 2008 R2 and Win 7. Should work with PowerShell version 2 and up.
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Sometimes I've had to do something like a "Get-ChildItem -Directory \\srv\share | % FullName | Get-FolderSize" because robocopy couldn't list the (DFS) root directly for some reason (v3 and up syntax in that example). Limit which output fields are displayed with Select-Object if you only want path and total bytes, for instance. NET - and also have the extremely useful benefit of avoiding the long path limitation in. Both methods are much faster than Get-ChildItem and. This Get-FolderSize script uses a super fast Scripting.FileSystemObject COM object, with an optional fallback to robocopy.exe with the logging only option (no actual copying), to list directories where you do not have access to one or more files or subfolders (then the COM object returns $null).