| 摘要 |
<p>Method and apparatus for protecting data by dividing data into a plurality of data subsets. Parity data for each data subset and another data subset of the plurality of data subsets is generated and then for a second other data subset. This allows recovery of data by retrieving one or more data subsets and retrieving two or more different parity data sets generated for one data subset. Thus any missing data subsets are regenerated using the retrieved one or more data subset and two or more retrieved parity data sets and combining the one or more retrieved data subset and regenerated missing data subsets to form the recovered data. Parity data for neighbouring subsets may be generated using the exclusive or (XOR) logical operator in a Redundant Array of Independent Disks (RAID) disc array.</p> |
