Robocopy emcopy block changes windows#
So it is only in Windows Explorer that I can view metadata and detect a difference? Robocopy does not compare the contents of According to Powershell the files are identical (except for the extended attributes). (You may wonder why I am posing this question as a "Robocopy" problem when it appears to be a Nexsan Assureon issue. I am trying to find out IF and WHY Robocopy is not detecting what I can see when I use Windows Explorer to view the file properties.Įither this is beyond the design of Robocopy, or there is a difference in how the underlying metadata is exposed to the GUI versus to Robocopy.)Īs to the Powershell queries, I did that. Not sure if it fits here, but worth a look.
I have used it for a ton of stuff over the years. It is a command-line file copy replacement for Robocopy with a robust set of options and it is blazing fast. When the /MIR operation executes Robocopy should be reporting a descrepancy because the destination file is changed (metadata missing). Well, if you want something simple that just works, I would take a look at EMCopy. The Robocopy source file is not changing. The file size is also reported as not different. The nature of the Assureon archiving process, the last modified and accessed time-date stamp is not changed. tif file properties of "Origin" (scanner device) and "Image" (pixel, color depth, etc.) are missing. From the perspective of the destination Win2k8r2 server the. Is that the sparse "stub" file properties are being removed during the archive. The Nexsan Assureon technology is an archiving system that migrates storage off the SAN to a nearline archive, leaving a 4K sparse "stub" file behind. The destination is a Win2k8r2 server with a local fiber channel SCSI volume.
The data is being migrated to new SAN storage backed by an Nexsan Assureon storage archival appliance. The Robocopy /MIR is being used to perform a data migration from a NAS storage device that publishes a CIFS share (mapped drive on a Win2k8r2 server). Let me add some additional details, hopefully clarify.