Check out the new USENIX Web site.

Home About USENIX Events Membership Publications Students
LISA 2001 Abstract

Measuring Real World Data Availability

Larry Lancaster and Alan Rowe, Network Appliance, Inc.

Abstract

This paper examines how server marketing claims of high reliability (e.g., 99.999%) stack up against real world data measurements. Our goals were to: measure discretionary NFS data availability, compare data availability between standalone and clustered systems, and draw some conclusions about best practices for customers.

We explain our methodology for measuring, filtering, and categorizing availability-related data. Through careful data and error analysis, we arrive at discretionary NFS data availability estimates for NetApp filers in the real world. We conclude that NetApp clusters provide over four-nines availability in the field.

  • View the full text of this paper in HTML, PDF, and PostScript.
    The Proceedings are published as a collective work, © 2001 by the USENIX Association. All Rights Reserved. Rights to individual papers remain with the author or the author's employer. Permission is granted for the noncommercial reproduction of the complete work for educational or research purposes. USENIX acknowledges all trademarks within this paper.

  • If you need the latest Adobe Acrobat Reader, you can download it from Adobe's site.

  • To become a USENIX Member, please see our Membership Information.
?Need help? Use our Contacts page.

Last changed: 30 Apr 2002 ml
Technical Program
LISA 2001 Home
USENIX home