I have SBS 2011, Server 2008 R2, running exchange that is running low on the space originally allocated for c: drive. From what I have read on other posts, it seems that the drive should have been paritionioned for around 150 GB instead of the 120 gb that it has. The drive is currently partitioned into 2 drives C: for the OS and D: for data. What third party software have any of you used that can reallocate some space to my c: drive without data loss? I really would prefer not to have to delete the data and reinstall everything. Also do not want to invest $500 for some software that offers a lot of funcationality that I do not need.