Personally, I have seen customers using Beyondcompare and some have used powershell scripts to compare folder sizes (PS I dont have those scripts as they were written by our customers). I would recommend maintaining a log of each EMCopy session as that log indicates how much data was copied and if there were any errors. 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). If you plan migrating data from NetApp filers or Celerra Filers you can use isi_vol_copy or isi_vol_copy_vnx respectively which can be run directly on the Isilon OneFS CLI to eliminate any intermediary copy hosts.ģ) There are several methods to compare data sizes between source and destination. We recommend using EMCopy as it has other features added as well like migrating local user data to a AD users using the sidmapfile function.Ģ) EMCopy is a. They both offer a command-line interface with advanced options such as mass copying of files, file monitoring, and all that at a much faster rate than the standard copy command.
1) In our testing, EMCopy has shown good performance (+20-25% improvement) for copying CIFS data as compared to Robocopy with the same number of threads. XCopy and Robocopy are some of the powerful copying tools available in Windows.
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