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. 28, 2021
Filed:
Apr. 24, 2020
Seagate Technology Llc, Fremont, CA (US);
Daniel John Benjamin, Savage, MN (US);
Ryan James Goss, Prior Lake, MN (US);
Seagate Technology, LLC, Fremont, CA (US);
Abstract
Method and apparatus for enhancing performance of a storage device, such as a solid-state drive (SSD). A non-volatile memory (NVM) stores user data from a client device. Map metadata in a local memory describes locations of the user data in the NVM. The map metadata is arranged as a snapshot and accumulated journal updates. A metadata manager circuit combines a first portion of the journal updates with the existing snapshot to generate a new snapshot, and places a second portion of the journal updates into a read-only journal table in accordance with a selected metadata journaling strategy. A controller uses the updated snapshot and the table to service subsequently received client commands. Only dirty entries are processed and are written at the slowest acceptable rate, thereby improving client I/O performance during normal operation and time to ready (TTR) performance of the device during initialization.