Method and system for storing data in raid memory devices

摘要

A redundant array of independent disk (RAID) memory storage system comprising data storage blocks arranged in a first plurality of data rows and a second plurality of data columns, wherein parity data is stored in additionally defined parity blocks, and wherein numbers of data blocks in respective columns are different, to accommodate the additional diagonal parity data block that the geometry of the system requires. The system is suitable for an SSD array in which sequential disk readout is not required.

主权项

1. A redundant array of independent disk (RAID) memory storage system comprising:
data storage blocks arranged in said array in a first plurality of data rows and a second plurality of data columns, wherein parity data is stored in additionally defined parity blocks, wherein numbers of blocks in respective columns are different; wherein at least some of said parity data is row parity data placed in a column of row parity data wherein at least some of said parity data is diagonal parity data placed in diagonal parity blocks in a diagonal parity column, wherein the number of said blocks comprising each row parity set is larger than the number of said data blocks comprising each diagonal parity set.