 Iometer is based on a client–server model, where one instance of the Iometer graphical user interface is managing one or more 'managers' (each one representing a separate Dynamo.exe process) which are doing the I/O with one or more worker threads.Iometer performs Asynchronous I/O - accessing files or block devices (later one allowing to bypass the file system buffers).Iometer allows the configuration of disk parameters such as the 'Maximum Disk Size', 'Starting Disk Sector' and '# of Outstanding I/Os'.