Check your MSSQL Server log folder
by luuminhtriet09130088 - 2/13/13 2:39 AM
In Reply to: "C" DRIVE GETTING FULL AUTOMATICALLY by akhil1981
MSSQL server auto write log file so that make your C drive full automatically.
You could go to C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\Log to clear all log file to free your C drive.

Moderator
CNET Staff
Samsung Staff
Dell Staff