Invention Grant
- Patent Title: Techniques for managing parity information for data stored on a storage device
-
Application No.: US15721267Application Date: 2017-09-29
-
Publication No.: US10379949B2Publication Date: 2019-08-13
- Inventor: Evgeny Televitckiy , Alexander Paley , Andrew W. Vogan
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Dickinson Wright RLLP
- Main IPC: G06F11/10
- IPC: G06F11/10 ; G06F3/06

Abstract:
Disclosed herein are techniques for managing parity information for data stored on a storage device. According to some embodiments, the method includes the steps of (1) receiving a request to store data into the storage device, (2) writing respective portions of the data into a plurality of data pages included in a first stripe of the storage device, where each data page is stored on a respective different die of the storage device, (3) calculating primary parity information for the first stripe, (4) writing the primary parity information into a primary parity page included in a second stripe of the storage device, (5) calculating secondary parity information for the second stripe, and (6) writing the secondary parity information into a secondary parity page included in a third stripe of the storage device. Additionally, a copy of the secondary parity information can be established to further-enhance redundancy.
Public/Granted literature
- US20190102253A1 TECHNIQUES FOR MANAGING PARITY INFORMATION FOR DATA STORED ON A STORAGE DEVICE Public/Granted day:2019-04-04
Information query