BACKUP AND RESTORATION FOR STORAGE SYSTEM

摘要

A backup method is provided for a file system for managing hierarchical storage including one or more storage media on a computer system including one or more computers. Each of the one or more storage media includes a data part which is separated from an index and on which updated information is appended and kept. Each of a plurality of pieces of data within the file system is managed to be migrated to at least any of the one or more storage media. The backup method includes backing up metadata of the plurality of pieces of data migrated within the file system; and backing up the index of each of the one or more storage media to which the plurality of pieces of data have been migrated, substantially at the same time point as the metadata.

主权项

1. A method for backup, the method comprising:
backing up metadata of a plurality of pieces of migrated data within a file system for managing hierarchical storage including one or more storage media, wherein each of the plurality of pieces of migrated data is migrated to at least one of the one or more storage media, each of the one or more storage media including a data part which is separated from an index, and wherein updated information is appended to the one or more storage media; and backing up the index of each of the at least one storage media to which the plurality of pieces of migrated data have been migrated, substantially at the same time point as backing up the metadata, wherein backup data of the metadata and the index is used in restoration along with the one or more storage media.