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Increase the folder size to say 6TB and 15,000,000 files/folders, you'll definitely see the differences. So 6 minutes quicker with EMCopy, with the same attributes being copied, same number of threads, and permissions. Security Descriptor Setting(s) done: : 63477Īmount of copied byte(s) : 30 GB (32 730 088 649 Byte(s))
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Log file : /log:t:\emcopy_test_same_thread.log Total Copied Skipped Mismatch FAILED Extras Let me state that should not be a bench mark, many factors can change the outcome of these tests, but I ran the tests on the same system, and with the same processes running both times. Here is a test I did, just for this post, EMCopy vs. Copies NTFS Permissions / Auditing Information / Owner Information: EMCopy and RoboCopy will both do this, but again, EMCopy just mops the floor with RoboCopy when running it side by side.Overall, EMCopy screams at doing a backup or mirroring a directory, because of the way it traverses the folders, which is in a non-linear manner. Performing Backups or Mirror Directories: EMCopy doesn't have a '/MIR' command, however you can use two commands that will only copy files that are newer on the source, and also to delete files that no longer exist on source.For smaller files it works better to have more threads, but it's important that the utility pre-allocates the files, to reduce fragmentation.
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copying a lot of larger files can benefit from fewer threads. There are down sides to multithreading though, e.g. Comparing EMCopy to RoboCopy with the same number of threads, EMCopy is 25-35% faster.
#Emcopy examples windows#
RoboCopy does support 128 threads on new versions of Windows 2008R2 and above. Multithreading: EMCopy supports up to 256 threads.I'll just give you a few quick points of what works better with EMCopy.
#Emcopy examples free#
It is a free data migration tool, CLI only, and has a lot of features that just seem to work better than RoboCopy.
#Emcopy examples trial#
What I have found on a long quest of trial and error is a utility called "EMCopy" from EMC. However, I've gotten to the point where RoboCopy is just not fast enough.