The Robocopy might be considered as an acceptable no-cost solution for the replication of GN4 volumes.

For example:

robocopy \\SourceServer\Share \\DestinationServer\Share /MIR /FFT /Z /XA:H /W:5

•/MIR specifies that robocopy should mirror the source directory and the destination directory. Beware that this may delete files at the destination.

•/FFT uses fat file timing instead of NTFS. This means the granularity is a bit less precise. For across-network share operations this seems to be much more reliable - just don’t rely on the file timings to be completely precise to the second.

•/Z ensures robocopy can resume the transfer of a large file in mid-file instead of restarting.

•/XA:H makes robocopy ignore hidden files, usually these will be system files that we’re not interested in.

•/W:5 reduces the wait time between failures to 5 seconds instead of the 30 second default.