Patent ID: 11971782
Assignee: SK HYNIX NAND PRODUCT SOLUTIONS CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A method of controlling storage, comprising:
controlling, by a controller, access to a persistent storage media and, in response to one or more commands:
determining an intermediate parity value based on a first parity calculation,
storing, in a memory of the controller, the intermediate parity value; and
determining a final parity value based on the intermediate parity value and a second parity calculation,
wherein determining the intermediate parity value comprises sending a uni-directional command to cause:
reading an old data value from a first address indicated in the uni-directional command;
performing an exclusive-or operation on the old data value and a new data value indicated in the uni-directional command to determine the intermediate parity value; and
storing in the persistent storage media the intermediate parity value at a first location associated to a first index indicated in the uni-directional command.