For managing virtual machine disk method and system

Embodiments of the invention relate to a method and a system for managing the virtual machine disk. According to an embodiment of the present invention, a dense thin provisioning and configuration are organically combined together to form a hybrid virtual machine disk management mechanism. In particular, for thin provisioning, if the virtual machine disk to determine the level of loading of heavy or virtual machine disk busy, it is determined to switch it to a dense configuration. Conversely, for dense configurations, if it is determined load level virtual machine disk lighter or virtual machine disk relatively free, it is determined to switch it to thin provisioning to avoid waste of resources. This makes it possible to effectively improve the efficiency and flexibility of virtual machine storage disk management.