On design of fail-safe cellular arrays

Kamiura, Naotake; Hata, Yutaka; Yamato, K.

doi:10.1109/ats.1996.555145

Cited by 4 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fail-safe behavior is the ability of a system to fail without producing a catastrophic result [5]. The concept of fail-safe systems has been well defined and widely used in LSI design [5]- [7] and railway applications [8], etc. The research in these areas focused on the conditions for achieving safety properties in a system, and its formal expression and proof.…”

mentioning

confidence: 99%

Availability requirement for a fault-management server in high-availability communication systems

2003

View full text Add to dashboard Cite

In this paper, we investigate the availability requirement for the fault management server in high-availability communication systems. According to our study, we find that the availability of the fault management server does not need to be 99.999% in order to guarantee a 99.999% system availability as long as the fail-safe ratio (the probability that the failure of the fault management server will not bring down the system) and the fault coverage ratio (the probability that the failure in the system can be detected and recovered by the fault management server) are sufficiently high. Tradeoffs can be made among the availability of the fault management server, the fail-safe ratio and the fault coverage ratio to optimize system availability. A cost-effective design for the fault management server is proposed in this paper. 1.INTRODUCTION Fault management plays an indispensable role in today's high-availability communication system. Fault management involves techniques for rapidly detecting, isolating and recovering system from faults, either automatically by the fault management software or manually by operators [1]. According to its function coverage, there are two levels of fault management in a communication system, i.e., equipment level and network level. At equipment level, fault management resides on the operational equipment, and detects, isolates and recovers failures in the equipment, e.g., brings up redundant power supply when the primary power supply fails. At the network level, fault management may adopt a server/client architecture with the server entity residing on specific equipment and the clients residing on the managed functional units. The fault management server detects, isolates and recovers failures in the system, e.g., redirects traffic to redundant equipment when the primary one fails. Common intuition indicates that the server providing network-level fault management should be highly available in order to achieve higher system availability, for example, the fault management server should provide at least 5-nine (0.99999) availability in order to achieve 5

show abstract

mentioning

confidence: 99%

Availability requirement for a fault-management server in high-availability communication systems

2003

View full text Add to dashboard Cite

show abstract

“…Fail-safe behavior is the ability of a system to fail without producing a catastrophic result [5]. The concept of failsafe systems has been well defined and widely used in LSI design [5]- [7] and railway applications [8], etc.…”

Section: A Simple Model Assumed In the Papermentioning

confidence: 99%

“…The concept of failsafe systems has been well defined and widely used in LSI design [5]- [7] and railway applications [8], etc. The research in these areas focused on the conditions for achieving safety properties in a system, and on its formal expression.…”

Section: A Simple Model Assumed In the Papermentioning

confidence: 99%

See 1 more Smart Citation

Impact of fault management server and its failure-related parameters on high-availability communication systems

Sun¹,

Han²,

Levendel³

Proceedings International Conference on Dependable Systems and Networks

View full text Add to dashboard Cite

In this paper, we investigate the impact of a fault management server and its failure-related parameters on high-availability communication systems. The key point is that, to achieve high overall availability of a communication system, the availability of the fault management server itself is not as important as its fail-safe ratio and fault coverage. In other words, in building fault management servers, more attention should be paid to improving the server's ability of detecting faults in functional units and its own isolation under failure from the functional units. Tradeoffs can be made between the availability of the fault management server, the fail-safe ratio and the fault coverage ratio to optimize system availability. A cost-effective design for the fault management server is proposed in this paper.

show abstract

Availability requirement for fault management server

Han

Sun

Levendel

25th Annual International Computer Software and Applications Conference. COMPSAC 2001

View full text Add to dashboard Cite

On design of fail-safe cellular arrays

Cited by 4 publications

References 7 publications

Availability requirement for a fault-management server in high-availability communication systems

Availability requirement for a fault-management server in high-availability communication systems

Impact of fault management server and its failure-related parameters on high-availability communication systems

Availability requirement for fault management server

Contact Info

Product

Resources

About