US 9,811,277 B2
Information processing system
Daisuke Hashimoto, Kawasaki (JP); Koichi Nagai, Chigasaki (JP); and Takanori Watanabe, Ome (JP)
Assigned to TOSHIBA MEMORY CORPORATION, Tokyo (JP)
Filed by TOSHIBA MEMORY CORPORATION, Tokyo (JP)
Filed on Feb. 23, 2017, as Appl. No. 15/440,588.
Application 15/440,588 is a continuation of application No. 14/850,833, filed on Sep. 10, 2015, granted, now 9,619,170.
Application 14/850,833 is a continuation of application No. PCT/JP2013/073859, filed on Aug. 29, 2013.
Claims priority of application No. 2013-055548 (JP), filed on Mar. 18, 2013.
Prior Publication US 2017/0160968 A1, Jun. 8, 2017
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 12/00 (2006.01); G06F 3/06 (2006.01)
CPC G06F 3/0619 (2013.01) [G06F 3/0647 (2013.01); G06F 3/0665 (2013.01); G06F 3/0689 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An information processing device connectable to a first storage unit, a second storage unit and a data migration log area, the first storage unit including a readable and writable first memory, the second storage unit including a readable and writable second memory, the information processing device comprising a control unit configured to execute:
first processing for determining a storage status of the first storage unit based on reliability information acquired from the first storage unit;
second processing for, when the storage status of the first storage unit is recognized as a protected state by the first processing, executing write on only the second storage unit of the first and second storage units, executing read on one of the first and second storage units based on an address recorded in the data migration log area;
third processing for recording an address of data written in the second storage unit in the data migration log area according to the write by the second processing; and
fourth processing for, when the storage status of the first storage unit is not recognized as the protected state by the first processing, executing read data from the first storage unit without reading from the data migration log area.