Matrix super parity for data storage
The technology disclosed herein pertains to a system and method for storing data on a storage media using both down-track super parity and cross-track super parity. Specifically, a method disclosed herein provides for generating down-track super parity values for data on the plurality of tracks and storing the down-track super parity values on a down-track super parity row of the storage block and generating cross-track super parity values for data on the plurality of rows and storing the cross-track super parity values on a cross-track upper parity track, wherein the cross-track super parity value for any given row is generated by inputting the data on the given row into an exclusive-OR (XOR) gate.
1. A method, comprising:
receiving data for storage on a storage block of a storage device, the storage block comprising a plurality of rows of storage sectors over a predetermined number of columns of storage sectors on a plurality of tracks of storage media;
generating down-track super parity values for data on the plurality of tracks and storing the down-track super parity values on a down-track super parity row in the storage block;
generating cross-track super parity values for data on the plurality of rows and storing the cross-track super parity values on a cross-track upper parity track in the storage block,
wherein the cross-track super parity value for any given row is generated by inputting the data on the given row into an exclusive-OR (XOR) gate.
2. The method of claim 1 , wherein cross-track super parity value for any given row is generated by inputting the data on the given row into an exclusive-OR (XOR) gate without coding the data on the given row.
3. The method of claim 2 , wherein the XOR gate is configured on a bitwise XOR (BXOR) system on chip (SoC).
4. The method of claim 2 , further comprising storing output of the XOR gate for each row in buffers after writing each track.
5. The method of claim 1 , further comprising determining down-track super parity for the cross-track upper parity track.
6. The method of claim 1 , wherein the storage device stores data on the storage media using shingled media recording (SMR).
7. The method of claim 1 , wherein there are two cross-track upper parity tracks.
8. A storage device, comprising:
a data writer to write data to a storage block of the storage device, the storage block comprising a plurality of rows of storage sectors over a predetermined number of columns of storage sectors on a plurality of tracks of storage media; and
a storage controller configured to:
generate down-track super parity values for data on the plurality of tracks and storing the down-track super parity values on a down-track super parity row in the storage block, and
generate cross-track super parity values for data on the plurality of rows and storing the cross-track super parity values on a cross-track upper parity track in the storage block, wherein the cross-track super parity value for any given row is generated by inputting the data on the given row into an exclusive-OR (XOR) gate.
9. The storage device of claim 8 , wherein cross-track super parity value for any given row is generated by inputting the data on the given row into an exclusive-OR (XOR) gate without coding the data on the given row.
10. The storage device of claim 9 , wherein the XOR gate is configured on a bitwise XOR (BXOR) system on chip (SoC).
11. The storage device of claim 9 , wherein the storage controller is further configured to store output of the XOR gate for each row in buffers after writing each track.
12. The storage device of claim 10 , wherein the storage controller is further configured to determine down-track super parity for the cross-track upper parity track.
13. The storage device of claim 8 , wherein the storage device stores data on the storage media using shingled media recording (SMR).
14. The storage device of claim 8 , wherein there are two cross-track upper parity tracks.
15. One or more tangible computer-readable storage media encoding processor-executable instructions for executing on a computer system a computer process, the computer process comprising:
receiving data for storage on a storage block of a storage device, the storage block comprising a plurality of rows of storage sectors over a predetermined number of columns of storage sectors on a plurality of tracks of storage media;
generating down-track super parity values for data on the plurality of tracks and storing the down-track super parity values on a down-track super parity row in the storage block;
generating cross-track super parity values for data on the plurality of rows and storing the cross-track super parity values on a cross-track upper parity track in the storage block,
wherein the cross-track super parity value for any given row is generated by inputting the data on the given row into an exclusive-OR (XOR) gate.
16. The one or more tangible computer-readable storage media of claim 15 , wherein cross-track super parity value for any given row is generated by inputting the data on the given row into an exclusive-OR (XOR) gate without coding the data on the given row.
17. The one or more tangible computer-readable storage media of claim 16 , wherein the XOR gate is configured on a bitwise XOR (BXOR) system on chip (SoC).
18. The one or more tangible computer-readable storage media of claim 16 , wherein the computer process further comprising storing output of the XOR gate for each row in buffers after writing each track.
19. The one or more tangible computer-readable storage media of claim 15 , wherein the computer process further comprising determining down-track super parity for the cross-track upper parity track.
20. The one or more tangible computer-readable storage media of claim 15 , wherein there are two cross-track upper parity tracks.