共查询到19条相似文献,搜索用时 262 毫秒
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用HACMP构建高可用主机系统 总被引:1,自引:0,他引:1
高可用系统指通过高可用软件将一组服务器连接在一起,组成一个集群,通过快速地将用户、应用和数据从发生硬件或软件故障的机器切换至其他机器来提供高可用计算环境。HACMP是基于AIX平台的,在高可用系统层次实现关键性任务计算环境的系统软件。对HACMP技术及HACMP的组成及结构作了介绍,给出了HACMP集群的硬件构成以及用HACMP构建高可用系统的思路和办法,并以HACMP集群在社保信息系统中的应用,阐述了高可用主机系统在信息化建设中的作用。 相似文献
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《每周电脑报》2004,(42)
□11月15日获悉,云南红塔集团选择IBM全球服务部的ERP业务系统灾备方案,在原有主机热备基础上采用IBM服务器及存储设备,构建远程容灾备份系统。新系统采用IBM eServer p690服务器作为核心应用主机,通过HACMP软件与原有主机组成双机热备集群,同时,选择2台IBM ESS800企业存储服务器作为备份系统核心,配合3581、3583磁带库等存储设备,实现远程数据的同步拷贝及实时备份,满足企业对灾难恢复系统的需求,系统还安装了IBM DB2数据库。□11月16日获悉,江苏雪豹集团采用浪潮服务器、存储产品搭建完整的信息系统平台,并在此平台上运行浪潮… 相似文献
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本文通过分析Veritas软件的几种解决方案,探讨如何在不同硬件和基础架构上,利用有限的预算构建企事业单位的高可用性架构,实现对不同应用和数据库实施灾难恢复,从而保证信息系统业务可持续性运转。 相似文献
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随着互联网应用的不断延伸,信息系统安全问题也日益突出。为提升信息系统的安全性,定期开展漏洞扫描至关重要。着重探讨了主机发现技术和端口扫描技术,并进行了编程实现。通过软件的测试运行,可以发现给定网段的主机在线情况和端口开放情况,为信息系统的安全配置提供了基础数据。 相似文献
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信息系统广泛应用的今天,企业对系统高可用性的需求日趋旺盛。本文介绍了我们利用Windows群集服务和磁盘阵列构建双机互备系统采提高应用系统可用性和可靠性方面的实践,并具体介绍了该方案的总体设计和实现过程中的技术要点。 相似文献
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为配合我国住房制度全面推行住房公积金制度,我所成功研制出城市住房公积金计算机网络理财系统.该系统是在RS/6000客户机/服务器系统上实现的.客户机/服务器计算是应用开发、网络互连以及系统管理等多种技术的集成.RS/6000是IBM精减指令集计算机、对称多处理器(SMP)、高可用性群集多处理器(HACMP)的典型代表,可安装AIX操作系统支持开放互连及客户机/服务器开发环境.AIX是UNIX的超集,熟悉U- 相似文献
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季刚 《计算技术与自动化》2012,(3):114-116
数据库系统是信息系统的基础,为了保证信息系统的高可用性,需要对主从服务器数据库进行同步,保证数据的一致性,本文根据实际需求摸索一种基于存储过程的主从服务器数据库同步方法,首先介绍存储过程,然后用实例说明如何利用存储过程实现主从服务器数据库同步,该方法对于特定系统具有一定的应用指导意义。 相似文献
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采用了VMware构建高可用性集群后,有效地实现了铁路信息系统的数据高可用性与实时备份,同时对电力消耗、服务器硬件维护等成本带来明显降幅,极大地方便了技术部门的日常管理工作。 相似文献
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巩曰泰 《自动化与仪器仪表》2009,(5):38-41
主要介绍以西门子S7—300PLC、Step7编程软件冗余选项、WINCCV6为结构的高性能PLC控制系统在原料磨计算机监控系统中的应用,通过对系统硬件设计方法和程序设计思想的介绍,使读者了解用Step7软件冗余选项如何构成高性价比的PLC系统。 相似文献
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《Software, IEEE》1989,6(3):10-17
An explanation is given of software verification and validation (V&V) and how it fits in the development life cycle. How to apply V&V is also discussed. Evaluations of its effectiveness are summarized 相似文献
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Survey of reliability and availability prediction methods from the viewpoint of software architecture 总被引:3,自引:0,他引:3
Many future software systems will be distributed across a network, extensively providing different kinds of services for their
users. These systems must be highly reliable and provide services when required. Reliability and availability must be engineered
into software from the onset of its development, and potential problems must be detected in the early stages, when it is easier
and less expensive to implement modifications. The software architecture design phase is the first stage of software development
in which it is possible to evaluate how well the quality requirements are being met. For this reason, a method is needed for
analyzing software architecture with respect to reliability and availability. In this paper, we define a framework for comparing
reliability and availability analysis methods from the viewpoint of software architecture. Our contribution is the comparison
of the existing analysis methods and techniques that can be used for reliability and availability prediction at the architectural
level. The objective is to discover which methods are suitable for the reliability and availability prediction of today’s
complex systems, what are the shortcomings of the methods, and which research activities need to be conducted in order to
overcome these identified shortcomings. The comparison reveals that none of the existing methods entirely fulfill the requirements
that are defined in the framework. The comparison framework also defines the characteristics required of new reliability and
availability analysis methods. Additionally, the framework is a valuable tool for selecting the best suitable method for architecture
analysis. Furthermore, the framework can be extended and used for other evaluation methods as well. 相似文献
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Availability Analysis of Application Servers Using Software Rejuvenation and Virtualization 总被引:1,自引:0,他引:1 下载免费PDF全文
Demands on software reliability and availability have increased tremendously due to the nature of present day applications.
We focus on the aspect of software for the high availability of application servers since the unavailability of servers more
often originates from software faults rather than hardware faults. The software rejuvenation technique has been widely used
to avoid the occurrence of unplanned failures, mainly due to the phenomena of software aging or caused by transient failures.
In this paper, first we present a new way of using the virtual machine based software rejuvenation named VMSR to offer high
availability for application server systems. Second we model a single physical server which is used to host multiple virtual
machines (VMs) with the VMSR framework using stochastic modeling and evaluate it through both numerical analysis and SHARPE
(Symbolic Hierarchical Automated Reliability and Performance Evaluator) tool simulation. This VMSR model is very general and
can capture application server characteristics, failure behavior, and performability measures. Our results demonstrate that
VMSR approach is a practical way to ensure uninterrupted availability and to optimize performance for aging applications.
This research was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) under Grant No.
KRF2007-210-D00006. 相似文献
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集群作为成本低、高性能并行或分布式计算平台已经成熟,同时提供许多关键服务(高效通信、负载平衡等)的软件包也已经出现,然而对于集群文件系统的可扩展性和高可用性仍然缺乏有效的支持。为此,介绍了一种基于可扩展性和高可用性的集群文件系统模型,并从可用性角度与集群文件系统(CFS,Cluster File System)进行了比较分析。 相似文献
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