Roll-forward and rollback recovery: Performance-reliability trade-off

Dhiraj K. Pradhan, Nitin H. Vaidya

Research output: Contribution to journalArticlepeer-review


Performance and reliability trade-offs depend on the recovery scheme used in any fault-tolerant system. Gain in performance, using comparable resources, typically requires sacrifice in reliability, and vice-versa. Roll-forward schemes for duplex systems achieve better performance than rollback schemes, without a significant increase in hardware resource requirements. This paper compares two roll-forward schemes with two roll-back schemes. It is shown that the roll-forward schemes improve performance with only a small loss in reliability as compared to rollback schemes.

Original languageEnglish (US)
Pages (from-to)372-378
Number of pages7
JournalIEEE Transactions on Computers
Issue number3
StatePublished - 1997


  • Checkpointing
  • Duplex systems
  • Performance
  • Reliability
  • Roll-forward

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computational Theory and Mathematics


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