The patent's assignee is
News editors obtained the following quote from the background information supplied by the inventors: "In large-scale virtualized system environments, system administrators typically rely on a virtual infrastructure management server (VIMS) to place virtual machines (VMs) on the various physical servers (hosts) and datastores that are present in the environment. When a VIMS 'places a VM on a host,' the VIMS causes the VM to execute on that host using the host's hardware resources. When a VIMS 'places a VM on a datastore,' the VIMS stores the files used by the VM (e.g., virtual disks) on the physical storage device(s) containing that datastore. A VIMS can place a VM on a host and a datastore upon initial deployment, or as a result of a migration event. In the latter case, the VIMS can move the VM from an old host to a new host (and thus place the VM on the new host), move the VM from an old datastore to a new datastore (and thus place the VM on the new datastore), or both.
"Certain techniques exist that enable a VIMS to automatically place VMs on hosts based on computational load metrics (e.g., central processing unit (CPU) utilization) determined for the hosts. Further, certain techniques exist that enable a VIMS to automatically place VMs on datastores based on storage load metrics (e.g., space or input/output (I/O) capacity) determined for the datastores. However, these existing techniques focus on balancing loads across hosts or datastores, without taking into account any requirements that the VMs may have with respect to the hosts/datastores on which the VIMS places them. Further, the existing techniques that collect storage load metrics assume that the storage characteristics for a given datastore will be the same across all hosts, which may not be the case if, e.g., the hosts are connected to the storage device(s) containing the datastore in an asymmetric manner."
As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventor's summary information for this patent application: "In one embodiment, a method includes receiving, by a computer system, one or more storage performance requirements for a virtual machine. The method further includes searching, by the computer system, for a host and an associated datastore that exhibits a level of storage performance satisfying the one or more storage performance requirements. If the searching is successful, the computer system places the virtual machine on the identified host and datastore.
"The following detailed description and accompanying drawings provide a better understanding of the nature and advantages of particular embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
"FIG. 1 illustrates a virtualized system environment according to one embodiment.
"FIG. 2 illustrates example storage performance metrics according to one embodiment.
"FIG. 3 illustrates a first VM deployment scenario according to one embodiment.
"FIG. 4 illustrates a second VM deployment scenario according to one embodiment.
"FIGS. 5A and 5B illustrate a first VM movement scenario according to one embodiment.
"FIGS. 6A and 6B illustrate a second VM movement scenario according to one embodiment.
"FIGS. 7A and 7B illustrate a third VM movement scenario according to one embodiment.
"FIG. 8 illustrates a process for collecting storage performance metrics according to one embodiment.
"FIGS. 9A and 9B illustrate a process for performing storage performance-based VM placement according to one embodiment."
For additional information on this patent application, see: Gondi,
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