Copy Utility for Data Deduplication and Long Path Names

I thought I'd share a bit of information I learned from several weeks of research.

If you have data deduplication on a volume, most copy utilities will fail. Tested utilities include:

• TeraCopy
• Roadkil's Unstoppable Copier
• FastCopy

Copy utilities are required in our environment because we have long path names (and lots of them). Windows Explorer copy works just fine on deduplicated data, but cannot handle our path names.

The one copy utility that we have tested that works to both properly re-hydrate deduplicated data and to handle long path names is:

• RoboCopy