US 12,001,331 B2
Data storage device, operation method thereof, and storage system including the same
Gun Wook Lee, Seoul (KR)
Assigned to SK hynix Inc., Gyeonggi-do (KR)
Filed by SK hynix Inc., Gyeonggi-do (KR)
Filed on Apr. 26, 2023, as Appl. No. 18/307,005.
Application 18/307,005 is a continuation of application No. 17/556,770, filed on Dec. 20, 2021, granted, now 11,675,699.
Application 17/556,770 is a continuation of application No. 16/566,085, filed on Sep. 10, 2019, granted, now 11,204,865, issued on Dec. 21, 2021.
Claims priority of application No. 10-2019-0001699 (KR), filed on Jan. 7, 2019.
Prior Publication US 2023/0259455 A1, Aug. 17, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 12/02 (2006.01)
CPC G06F 12/0253 (2013.01) [G06F 2212/1044 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A data storage device comprising:
a storage area including an overprovisioning area, the storage area being composed of a plurality of memory blocks; and
a controller configured to determine whether to trigger a garbage collection operation on the storage area based on a number of free blocks and a number of bad blocks among the plurality of memory blocks,
wherein the controller is configured to replace the at least one bad memory block with at least one of the plurality of memory blocks.