Downloads; Training; Support Windows Client Sign. Since the Emcopy is the supported by EMC, I'm not so familiar with the commands with details. Below is a collection of perl scripts that make data migration from VNX/Celerra file systems to an Isilon system much easier. I’ve already outlined the process of using isi_vol_copy_vnx in a prior post, however using EMCOPY may be more appropriate in a specific use case, or simply more familiar to administrators for support and management. Hi expert, Can you share experience on emcopy, I am very new to emcopy utilities. I have one file server to migrate to storage Area Network device. How to use emcopy and is there any step.
First off, I love RoboCopy, I've used it for over a decade now, and I have no issues with it. However, I've gotten to the point where RoboCopy is just not fast enough. What I have found on a long quest of trial and error is a utility called 'EMCopy' from EMC. It is a free data migration tool, CLI only, and has a lot of features that just seem to work better than RoboCopy.
I'll just give you a few quick points of what works better with EMCopy.
Multithreading: EMCopy supports up to 256 threads. RoboCopy does support 128 threads on new versions of Windows 2008R2 and above. Comparing EMCopy to RoboCopy with the same number of threads, EMCopy is 25-35% faster. There are down sides to multithreading though, e.g. copying a lot of larger files can benefit from fewer threads. For smaller files it works better to have more threads, but it's important that the utility pre-allocates the files, to reduce fragmentation.
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. 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.
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.
Here is a test I did, just for this post, EMCopy vs. RoboCopy. 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.
RoboCopy:
EMCopy:
So 6 minutes quicker with EMCopy, with the same attributes being copied, same number of threads, and permissions. Increase the folder size to say 6TB and 15,000,000 files/folders, you'll definitely see the differences.
Here are the downloads:
EMCopy Requires Free Registration - https://support.emc.com Once logged in, search for 'EMCopy'. Current version is EMCopy 4.17
Or download from here:
Ecopy Download Trial
EMCopy - https://www.dropbox.com/s/qm80mwkhgg2augg/emcopy_4_17.zip?dl=0
Emcopy64.exe Download
MD5: 9f75d19b9d8deefcee6a498ab2bc0aea