US 12,468,634 B2
System and method for page mirroring for storage
Heekwon Park, San Jose, CA (US); Jongmin Gim, Pleasanton, CA (US); Jaemin Jung, San Jose, CA (US); Changho Choi, San Jose, CA (US); and Yang Seok Ki, Palo Alto, CA (US)
Assigned to Samsung Electronics Co., Ltd., Yongin-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jul. 3, 2023, as Appl. No. 18/346,698.
Claims priority of provisional application 63/457,357, filed on Apr. 5, 2023.
Prior Publication US 2024/0338317 A1, Oct. 10, 2024
Int. Cl. G06F 12/08 (2016.01); G06F 12/0804 (2016.01); G06F 12/0882 (2016.01); G06F 13/16 (2006.01)
CPC G06F 12/0882 (2013.01) [G06F 12/0804 (2013.01); G06F 13/1668 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
reading first data from a persistent memory device;
determining that the first data is stored in a first cache;
determining that the first data is a candidate for promotion to a system memory based on an access frequency of the first data;
copying the first data from the first cache to the system memory; and
modifying an entry corresponding to the first data in an access table based on the first data being a candidate for promotion,
wherein the persistent memory device supports an external protocol and a memory protocol.