data-konzept

'Previously, I covered the basics of storage subsystem metrics and testing in my article Analyzing I/O Subsystem Performance for SQL Server, including an introduction of CrystalDiskMark 4.0. CrystalDiskMark was recently rewritten to use Microsoft DiskSpd for its testing, which makes it an even more valuable tool for your initial storage subsystem testing efforts. DiskSpd provides the functionality needed to generate a wide variety of disk request patterns, which can be very helpful in diagnosis and analysis of I/O performance issues with a lot more flexibility than older benchmark tools like SQLIO. It is extremely useful for synthetic storage subsystem testing when you want a greater level of control than that available in CrystalDiskMark.'...

http://sqlperformance.com/2015/08/io-subsystem/diskspd-test-storage