公开(公告)号：US11687278B2

公开(公告)日：2023-06-27

申请号：US16457068

申请日：2019-06-28

Applicant: Seagate Technology LLC

Inventor： Douglas Dewey ,  Ian Davies ,  Ryan Phillips

IPC: G06F3/06

CPC classification number: G06F3/0659 ,  G06F3/0604 ,  G06F3/065 ,  G06F3/0653 ,  G06F3/0673

Abstract: A data storage system can connect a data storage controller to a host and a data storage device. A first reference state corresponding to a first zone of the data storage device can be incremented in response to a first version of data being assigned to the first zone by the data storage controller. A second version of the data may be written to a second zone of the data storage device prior to populating a recently freed list with the first zone having an incorrect reference state. The first zone can be allocated by the data storage controller for new data without altering the incorrect reference state that is subsequently written to the first zone as directed by the data storage controller.