The SQLIOSim utility simulates the I/O patterns of Microsoft SQL Server 2005, of SQL Server 2000, and of SQL Server 7.0. The I/O patterns of these versions of SQL Server resemble one another. The SQLIOStress utility has been used to test SQL Server 2005 I/O requirements for many years.
For more information and to download SQLIOSim utility from Microsoft see KB231619.
NOTE: The SQLIOSim utility replaces the SQLIOStress utility. The SQLIOStress utility was formerly named the SQL70IOStress utility.