시스템관리를 위한 프레임워크. 시스템관리에 대한 패러다임 변화, ContolTier 소개

ControlTier 프로그램의 경우도 단순한 도구일뿐만 아니라 효율적인 시스템관리를 위한 방법론 및 패러다임의 변화를 담고 있습니다. 또한 System Admin, Package Manager, Service Manager, Architect 로 역할을 나누어서 해야 할 역할 및 책임을 말하고 있습니다. 시스템관리를 위한 도구를 어떠한 것을 쓰건 각 역할을 명확하게 규정을 하고 프로세스를 자동화하는 것이 필요할 것입니다.

Visible Ops Handbook 은 구매해야 볼 수 있는 자료입니다.

- Visible Ops Handbook 을 보시면 최고의 효율적인 IT 조직에 대한 공통특성을 뽑고 있습니다.
High throughput of effective change 의 경우는 효율적인 변경관리도구가 필요합니다.
Higher investment early in the IT lifecycle 는 OS설치자동화부터 프로그램개발, 빌드, 테스트, 배포 등의 전과정이 라이프스타일, workflow 에 따라 구성이 되어야 하는 부분입니다.
Collaborative working relationships between functions 부분은 각 기능(팀)간에 업무를 효율적으로 하기 위한 협업관계를 말합니다. (이슈트래킹, 위키 등을 통하여 업무 효율화등과도 연관될 수 있음)
Low amounts of unplanned work 는 사전계획에 없던 작업을 최소화하는 것인데 이것은 시스템 및 서비스 자체의 이중화, 가용성과 연결이 됩니다.
Server to system administrator ratios 는 훌륭한 회사의 경우 100:1 이상이라는 이야기를 하며 앞에서 이야기를 한 것 외에 얼마나 효율적인 조직인지를 판단하는 척도로 사용하고 있습니다.

또한 이렇게 효율적인 IT 조직에서 필요한 문화로 세가지-변경관리, causality, 지속적인 개선을 말하고 있으며 관련된 ITIL 프로세스로는 Release Processes, Control Processes, Resolution Processes 를 이야기하고 있습니다.

- Visible Ops Handbook
http://www.itpi.org/home/visibleops2.php
Since 2000, we have met with hundreds of IT organizations and identified eight high-performing IT organizations with the highest service levels, best security, and best efficiencies. What was most amazing about these eight organizations was what they shared: a common way of managing change, a culture of causality, and value placed on controls that were both visible and auditable.

Visible Ops reflects the lessons learned about how these organizations work and describes a control-based entry point into the world of ITIL. Organizations can use Visible Ops to springboard their own process improvement efforts.

- Common Characteristics Of High-Performing IT Organizations

* High service levels and availability
* High throughput of effective change
* Higher investment early in the IT lifecycle
* Early and consistent process integration between IT operations and IT security
* Posture of compliance
* Collaborative working relationships between functions
* Low amounts of unplanned work
* Server to system administrator ratios greater than 100:1 - For the authors, the biggest surprise was that high performing IT organizations were not only the most effective, but they were also the most efficient. In addition to spending the least amount of time on unplanned work, their system administrators also had the highest spans of control, as measured by server to system administrator ratios. Each of the high performers had server/sysadmin ratios greater than 100:1. In contrast, analysts report that average server/sysadmin ratios is between 15:1 and 25:1.

- The Server/SysAdmin Ratio: What It Is And What It Isn't
the server/sysadmin ratio serves as an easy to calculate indicator of IT organization effectiveness and efficiency. It is not a management metric, but it is an interesting indicator. A far more tactical metric is percentage of time spent on unplanned
work, and our benchmarking shows a linear relationship between unplanned work and the server/sysadmin ratio. But, unlike server/sysadmin ratio, you can actually manage and directly affect the factors that contribute to unplanned work.

- Cultures Common To The High-Performing IT Organizations
A culture of change management
A culture of causality
A culture of continual improvement

- ITIL Processes Common To The High Performers
Release Processes
Control Processes
Resolution Processes

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문태준
http://groups.google.co.kr/group/sysadminstudy 시스템어드민 공부모임
http://tunelinux.pe.kr
http://database.sarang.net