公开(公告)号：CA2749129A1

公开(公告)日：2010-07-15

申请号：CA2749129

申请日：2010-01-07

Applicant: NETAPP INC

Inventor： JERNIGAN RICHARD P IV ,  WYCKOFF HYER ROBERT JR ,  KAZAR MICHAEL ,  NYDICK DANIEL S

IPC: G06F11/10

Abstract: The present invention provides a system and a method for utilizing a parity protection module to back up data on striped aggregates. Specifically, the system computes party data for data stored at a particular location of each of a plurality of constituent aggregates, and stores the parity on one of the constituent aggregates that is a parity owner for that particular location of data. In the event one of the constituent aggregates fails, new data may still be accessed by the system (the striped aggregates), both to write new data, and to read data stored on the failed aggregate. In particular, the parity protection module allows clients to read data from a failed aggregate by running a reverse parity computation, which may also be used to restore the data to the failed aggregate.