DOUBLE WRITING MAP TABLE ENTRIES IN A DATA STORAGE SYSTEM TO GUARD AGAINST SILENT CORRUPTION

摘要

A method for writing data in a data storage device includes: writing data to a physical memory location in a non-volatile memory; writing, for a first time, to a location in a volatile memory corresponding to a logical address of the data, a physical address of the physical memory location of the non-volatile memory containing the data; and writing, for a second time, to the location in the volatile memory corresponding to the logical address of the data, the address of the physical memory location of the non-volatile memory containing the data. The physical address of the physical memory location is written with appended error detection code information, and the error detection code information is determined based on the logical address of the data.

主权项

1. A method for writing data in a data storage device using a control unit, the method comprising:
writing, by the control unit, data to a physical memory location in a non-volatile memory; sending, by the control unit, a first update request corresponding to the data to write a physical address of the physical memory location to a location in a table corresponding to a logical address of the data; and sending, by the control unit, a second update request corresponding to the data to write the physical address of the physical memory location to the location in the table corresponding to the logical address of the data.