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Method of the database backups by using split-mirror copies of logical volumes.

IP.com Disclosure Number: IPCOM000014607D
Original Publication Date: 2001-May-04
Included in the Prior Art Database: 2003-Jun-20

Publishing Venue

IBM

Abstract

Disclosed here is an automated and concurrent backup system and method that highly reduces downtime of databases by taking advantage of the features given by the volume group manager in UNIX systems. Problem Description In order to do a full backup a database, the database manager system has to quiesce the database to prevent any data corruptions while the backups are running. During this time, the data base is only available for reads and therefore the database is not available for the normal operation (read and write). This is the problem especially for a global operation where there is geographical time difference, thus the system must be operational for 24 hours. Furthermore, as the size of the data base grows, the backup time increases. Therefore the availability issue of the data base due to the backup operation become more critical. Solution