Parallels International Assigned Patent

Parallels International GmbH, Schaffhausen, Switzerland, has been assigned a patent (10,496,547) developed by Naenko, Andrey, Dobrovolskiy, Nikolay, Moscow, Russia, Beloussov, and Serguei M., Costa Del Sol, Singapore, for an “external disk cache for guest operating system in a virtualized environment.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A system and method is provided for managing computing resources of a physical server executing a plurality of virtual machines, (VMs) including a first virtual machine, (VM). The first VM executes a guest block device driver configured to provide a guest operating system of the first VM an interface to a memory-mapped virtual storage device. A virtual machine monitor maintains a disk cache associated with the virtual storage device. The disk cache resides in a host physical memory of the physical server outside of portions of the host physical memory associated with guest physical memory of the first VM. The virtual machine monitor is configured to, responsive to determining that available host physical memory satisfies a threshold condition, reclaim a target portion of the host physical memory allocated to the disk cache.”

The patent application was filed on May 10, 2017 (15/591,225).