Using the simulation model to the disk drive / o choke disk i

The present invention relates to a disk drive simulation model to the disk I / O choke. A method for providing a request from a virtual machine (VM) to a hard disk drive (HDD) is a choke computerized systems, and computer storage media. Upon receiving a request from the VM to the disk I / O to access the disk drive model simulating the performance characteristics of the disk drive model of the HDD. During the visit, the collecting disk drive HDD model parameter estimation and said disk drive model estimate of the current state of the pan head of the HDD. Calculating the expected execution time of execution of the request and the current status of the HDD parameter estimation estimated disk head. Further, when the request to allow the measurement on the HDD actual execution time of execution of the request. Comparative actual execution time and the execution time expected, the traffic requested from the VM throttling.