I wanted to give you a quick pointer to a very interesting blog post that discusses the subject of Exchange database fragmentation on incorrectly formatted NTFS volumes, what the ramifications of those situations can be and how to deal with them. It has been written by Mike Lagase on his blog and can be found here:
About The Author
Anderson Patricio is a Canadian MVP in Cloud and Datacenter Management, and Office Server and Services, besides of the Microsoft Award he also holds a Solutions Master (MCSM) in Exchange, CISSP and several other certifications. Anderson contributes to the Microsoft Community with articles, tutorials, blog posts, twitter, forums and book reviews. He is a regular contributor here at Techgenix.com, MSExchange.org, ITPROCentral.com and Anderson Patricio.org (Portuguese).