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:
Aug. 10, 2021
Filed:
Jul. 30, 2018
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Peng Yin, Southborough, MA (US);
Kunxiu Gao, Boxborough, MA (US);
Jiahui Wang, Framingham, MA (US);
Seema G. Pai, Shrewsbury, MA (US);
Ningdong Li, Acton, MA (US);
Daohong Wang, Newton, MA (US);
Stephen Richard Ives, West Boylston, MA (US);
Li Lang, West Roxbury, MA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Techniques for performing configuration may include: determining an initial distribution of logical devices among disk adapters, wherein the initial distribution assigns each logical device a designated disk adapter as a primary active disk adapter servicing I/Os directed to the logical device, wherein the logical devices have storage provisioned from a RAID group including physical storage devices, wherein the disk adapters concurrently issue I/Os to each of the physical storage devices; detecting a configuration change; and responsive to detecting a configuration change, performing first processing. The first processing may include determining, in accordance with the configuration change, a redistribution of the logical devices among the disk adapters; and draining pending I/Os. The configuration change may include adding or removing a logical device provisioned from the RAID group. Performing a first operation on a storage device of the RAID group may include synchronous draining of I/Os of the storage device.