The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2023
Filed:
Jan. 15, 2021
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Vasu Subramanian, Chapel Hill, NC (US);
Yakov Stanislavovich Belikov, Saint Petersburg, RU;
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A computer system includes a virtual machine (VM) host computer and a data storage system providing physical storage and mapping logic to store a virtual volume (vVol) for a VM. During a first operating session, first-session working data is stored on the vVol, the working data being session specific and not persisting across operating sessions. At the end of the first operating session, unmap operations are performed to deallocate underlying physical storage of the vVol, leaving the vVol as a skeleton vVol. At the beginning of a subsequent second operating session, and based on the existence of the vVol as the skeleton vVol, the VM host resumes use of the vVol for storing second-session working data of the VM during the second operating session. The retention of the vVol in skeleton form can improve system startup efficiency especially for a boot storm involving simultaneous startup of many VMs.