Fault Tolerance of Clusters Configurations
with Direct Connection of Storage Devices

V. A. Bogatyrev

St. Petersburg State University of Information Technologies, Mechanics, and Optics,

pr. Kronverksky 49, St. Petersburg, 197101 Russia

e-mail: vladimir.bogatyrev@gmail.com

Received August 22, 2011

Abstract—Variants of cluster configurations with direct connection of two-input storage devices to dou-
bled application servers in which every server is connected to two storage devices and every storage
device to two servers are considered. The fault tolerance of the configurations under consideration has
been analyzed. The dependence of the saving probability of the working capacity of the configurations
on the number and combinatory arrangement of the failed storage devices has been stated.

Keywords: fault tolerance, cluster, reliability, redundancy, storage device, server

DOI: 10.3103/S0146411611060046

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