US 12,271,261 B2
Data storage device and method for host-assisted improved error recovery using a correlation factor
Dinesh Kumar Agarwal, Bangalore (IN); and Amit Sharma, Bengaluru (IN)
Assigned to Sandisk Technologies, Inc., Milpitas, CA (US)
Filed by Western Digital Technologies, Inc., San Jose, CA (US)
Filed on Jul. 18, 2023, as Appl. No. 18/223,128.
Claims priority of provisional application 63/449,802, filed on Mar. 3, 2023.
Prior Publication US 2024/0296089 A1, Sep. 5, 2024
Int. Cl. G06F 11/00 (2006.01); G06F 11/10 (2006.01)
CPC G06F 11/1016 (2013.01) 20 Claims
OG exemplary drawing
 
1. A data storage device comprising:
a memory; and
a processor configured to communicate with the memory and further configured to:
receive, from a host, an indication that data associated with a first logical address is correlated with data associated with a second logical address;
determine a correlation factor based on a degree of correlation between the data associated with the first logical address and the data associated with the second logical address; and
in response to the correlation factor being above a threshold:
store the data associated with the first logical address and the data associated with the second logical address in different regions of the memory having different bit error rates; and
use the data associated with the first logical address to assist in correcting an error in the data associated with the second logical address.