中英文对照 － 服务器可靠性:Windows变差Linux好转

[TOM]

Unix, Linux Uptime and Reliability Increase; Patch Management Woes Plague Windows

Analyst Laura DiDio

Unix, the leading Linux distributions from Novell and Red Hat as well as open source Ubuntu were the clear winners in the Yankee Group 2007-2008 Global Server Operating System Reliability Survey.

Yankee Group's second annual Global Server Operating System Reliability Survey polled 400 users from 27 countries worldwide. The latest independent, nonsponsored web-based survey revealed that all versions of Unix--which typically carry very high workloads--are near bulletproof, achieving 99.99999% reliability. IBM's AIX Unix led all server operating systems for reliability with just more than 30 minutes per server of annual downtime.

The top Linux distributions Red Hat Enterprise Linux (RHEL) and Novell SUSE Linux notched the biggest reliability improvements in the latest survey. Each decreased per server per annum downtime by an average of 75%.

The biggest and most unwelcome surprise in the survey was that Windows Server 2003 downtime increased by 25% to nearly 9 hours of downtime per server per year compared to the results it achieved in the Yankee Group 2006 Global Server Operating System Reliability Survey (see the March 2006 Yankee Group Report, Unix, Windows and Custom Linux Score Well on Yankee Group 2006 Global Server Reliability Survey). Windows Server 2003's decreased reliability is attributable to a series of security alerts Microsoft issued in the summer and fall that caused network administrators to take their Windows Server 2003 machines offline for significantly longer periods of time to apply remedial patches.

During the past 2 years, the Yankee Group polls have indicated that all of the major server operating system platforms achieved a much higher degree of reliability than.





Yankee Group近日公布了一份报告“2007-2008全球服务器操作系统可靠性调查”，通过对来自27个国家的700多名用户进行在线调查发现，Windows Server的离线时间显著增加，而Linux的情况则有大幅好转，当然最可靠的依然是Unix。

　　在2006年进行的上一次调查中，Windows Server管理员还报告说他们的离线时间要比Linux系统少很多，但现在情况变了，Windows Server 2003每年每服务器的离线时间已经接近9个小时，比上次增加了25％，而Red Hat、Novell Linux则减少了七成以上。

　　Yankee Group分析师Laura DiDio指出：“Windows Server 2003可靠性变差的主要原因是微软在去年夏天和秋天发布了一系列安全警告，迫使网络管理员不得不花更多的时间进行离线修复。”

　　Novell SUSE Linux的离线时间从大约4个小时降低到了略高于1个小时，减少73％，同时其市场份额也从13％增至17％；Red Hat Enterprise Linux离线时间减少75％，从7.1小时降至1.75小时，同时市场份额从26％增至31％；Dedian虽然超过了5个小时，但也减少了41％，份额从15％增至24％。

　　有趣的是，在桌面领域迅速得宠的Ubuntu第一次吸引了服务器客户，22％的受访者都表示他们至少有一台Ubuntu服务器，而离线时间仅为1.1小时。

　　Unix系统占了受访服务器的10％，稳定性最高，其中IBM AIX平均每年只有36分钟离线，HP-UX v1101和Sun Solaris也分别不过1.1小时和1.4小时。


中文来源: 驱动之家