Isolation of virtual machine I/O in multi-disk hosts

摘要

Embodiments of the present invention relate to systems, methods, and computer storage media for concurrently maintaining a spanned virtual hard drive across two or more computer-storage media and a non-spanned virtual hard drive on one of computer-storage media. The method includes storing data of the spanned virtual hard drive across the computer-storage media utilizing volume spanning. While the spanned virtual hard drive is maintained on the computer storage media, the method includes storing data of the non-spanned virtual hard drive on one of the computer-storage media.

主权项

1. A method in a computing environment utilizing a processor and memory for concurrently maintaining 1) a spanned virtual hard drive across two or more discrete computer-storage media (“CSM”) and 2) a non-spanned virtual hard drive on a first CSM of the two or more CSM, the method comprising:
storing data of the spanned virtual hard drive across the two or more CSM utilizing volume spanning; and while the spanned virtual hard drive is maintained on the two or more CSM, storing data of the non-spanned virtual hard drive on the first CSM of the two or more CSM storing the spanned virtual hard drive, wherein the non-spanned virtual hard drive does not span the two or more CSM, and wherein upon receiving a request to store data in a third virtual hard drive and a determination that a volume containing the third virtual hard drive is insufficient is made, the third virtual hard drive is spanned across the two or more CSM, wherein one of the two or more CSM that the third virtual hard drive spans is the first CSM, which maintains the non-spanned virtual hard drive.