Operating system support for massive replication

  • Authors:
  • Arun Venkataramani;Ravi Kokku;Mike Dahlin

  • Affiliations:
  • The University of Texas at Austin;The University of Texas at Austin;The University of Texas at Austin

  • Venue:
  • EW 10 Proceedings of the 10th workshop on ACM SIGOPS European workshop
  • Year:
  • 2002

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Abstract

The increasing number of devices used by each user to access data and services and the increasing importance of the data and services available electronically both favor "access-anywhere" network-delivered services. Unfortunately, making such services highly available is difficult. For example, even though end servers or service hosting sites advertise an availability of "four nines" (99.99%) or "five nines" (99.999%), the end-to-end service availability (as perceived by clients) istypically limited to two nines because of poor wide area network availability [6]. Moreover, although network bandwidths are improving quickly, network latencies are much more difficult to improve in wide area networks, which limits performance for access-anywhere services if those services are delivered from a single location.