More and more organizations are running a clustered twin-computer system to tackle the rapidly growing demand of computer capacity. A prevailing rationale for a clustered twin-computer system isthat it is an effective way of coping with not only the capacity growth challenge but also the computer downtime problem. This paper develops an analytical model for a clustered twin-computer system subject to breakdowns with an aim to identifying conditions under which the clustered twin-computer system is a better alternative to a consolidated system. This research finds that the clustered twin-computer system has a shorter expected time in system for most cases. The clustered twin-computer system also performs better when there is a heavy traffic intensity. For firms with a consolidated single computer system, this research finds that it pays off to reduce the mean time to repair than to increase the mean time between failures
Cheng, Hsing Kenneth, "The Impact of Breakdowns on the Decision to Consolidate or Cluster Computers" (1997). AMCIS 1997 Proceedings. 278.