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:
Dec. 01, 2020
Filed:
Jun. 24, 2016
Emc Corporation, Hopkinton, MA (US);
Rong Yu, West Roxbury, MA (US);
Jeremy J. O'Hare, Westborough, MA (US);
Anoop Raghunathan, Ashland, MA (US);
Ning Wu, Northborough, MA (US);
EMC IP HOLDING COMPANY LLC, Hopkinton, MA (US);
Abstract
Allocation of physical storage capacity within a storage array may be managed in standard size allocation units, e.g. 128 kb tracks, and smaller sub-allocation units, e.g. 32 kb quarter tracks. Data associated with sub-allocation units that match a known pattern may be represented by a hint rather than data in storage. The hint may be used to mitigate overhead associated with accessing backend storage. The hint may also mitigate the need for performing compression/decompression of the corresponding sub-allocation unit if the data is compressed. In response to a read or write request associated with an allocation unit organized into sub-allocation units, only those sub-allocation units that are required to service the read or write request and fail to match a pattern are accessed, decompressed or compressed.