Database recovery using redundant disk arraysRedundant disk arrays provide a way for achieving rapid recovery from media failures with a relatively low storage cost for large scale database systems requiring high availability. In this paper a method is proposed for using redundant disk arrays to support rapid-recovery from system crashes and transaction aborts in addition to their role in providing media failure recovery. A twin page scheme is used to store the parity information in the array so that the time for transaction commit processing is not degraded. Using an analytical model, it is shown that the proposed method achieves a significant increase in the throughput of database systems using redundant disk arrays by reducing the number of recovery operations needed to maintain the consistency of the database.
Document ID
19920071351
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mourad, Antoine N. (NASA Langley Research Center Hampton, VA, United States)
Fuchs, W. K. (NASA Langley Research Center Hampton, VA, United States)
Saab, Daniel G. (Illinois, University Urbana, United States)