On　Dependability　of　Computing　Systems  

作　　者：徐拾义 

出　　处：《Journal of Computer Science & Technology》1999年第2期116-128,共13页计算机科学技术学报（英文版）

摘　　要：With the rapid development and wide applicatioos of computing systems on which more reliance hu been put, a dependable syatem will be much more important than ever. This paper is hrst aimed at giving informal but precise definitions characterizing the various attributes of dependability of computing sys- tems and then the importance of (and the relationshipa among) all the attributes are explained . Dependability is first introduced as a global concept which subsumes the usual attributea of reliability, availabilityt maintainability, safety and securit. The basic definitions given bere are then commended and supplemented by detailed material and additional explanations in the subsequent sections . The presentation has been structured as follows so as to attract the reader's atteation to the important attributions of dependability. Search for a few number of concise concepts enabling the dependability at- tributes to be expressed as clearly as possible. Use of terms which are identical or as close as possible to those commonly used mowadays . This paper is also intended to provoke people's interest in designing a dependable computing system.With the rapid development and wide applicatioos of computing systems on which more reliance hu been put, a dependable syatem will be much more important than ever. This paper is hrst aimed at giving informal but precise definitions characterizing the various attributes of dependability of computing sys- tems and then the importance of (and the relationshipa among) all the attributes are explained . Dependability is first introduced as a global concept which subsumes the usual attributea of reliability, availabilityt maintainability, safety and securit. The basic definitions given bere are then commended and supplemented by detailed material and additional explanations in the subsequent sections . The presentation has been structured as follows so as to attract the reader's atteation to the important attributions of dependability. Search for a few number of concise concepts enabling the dependability at- tributes to be expressed as clearly as possible. Use of terms which are identical or as close as possible to those commonly used mowadays . This paper is also intended to provoke people's interest in designing a dependable computing system.

关 键 词：DEPENDABILITY RELIABILITY AVAILABILITY SAFETY SECURITY 

分 类 号：TP302.8[自动化与计算机技术—计算机系统结构]