HoboCopy-backup locked files using shadowcopy
http://www.pluralsight.com/wiki/default.aspx/Craig/HoboCopy.html
HoboCopy is aHoboCopy l. It is inspired by robocopy in both name and in functionality. It differs greatly from robocopy, however, in two respects:
1. It is not as full-featured as robocopy.
2. It uses the Volume Shadow Service (VSS) to "snapshot" the disk before copying. It then copies from the snapshot rather than the "live" disk.
Installing HoboCopy
Most users can simply unzip the file containing hobocopy.exe into the directory of your choice. However, HoboCopy uses the Visual C++ 8.0 runtime, which may not be present on some machines. If HoboCopy does not work for you, run the vcredist executable available from the same location you downloaded HoboCopy.
Why Does HoboCopy Use the Volume Shadow Service?
Because HoboCopy copies from a VSS snapshot, it is able copy even files that are in locked by some other program. Further, certain programs (such as SQL Server 2005) are VSS-aware, and will write their state to disk in a consistent state before the snapshot is taken, allowing a sort of "live backup". Files locked by VSS-unaware programs will still be copied in a "crash consistent" state (i.e. whatever happens to be on the disk). This is generally a lot better than not being able to copy the file at all.
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