ITIL 服务经理考试指南: 6.2 CAPACITY MANAGEMENT (1)
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6.2 CAPACITY MANAGEMENT
GOAL
基因代码 | 知识点名称 | 记忆等级 | 知识点内容 |
CAM001 | GOAL | D1 | To ensure that cost justifiable IT Capacity always exists and that is matched to the current and future identified needs of business. |
记忆关键点：cost; exists; matched; current; future; needs of business
ACTIVITY
基因代码 | 知识点名称 | 记忆等级 | 知识点内容 |
CAM002 | ACTIVITY | D1 | DIAMonD - Demand Management (Influence -> FM/Charging) /Modeling (Predict) /Application Sizing/CDB/Capacity Plan AMIT - Monitoring (Baseline/Profile/Thresholds/Alarms) -> Analysis-> Tuning -> Implementation (Change Management) |
记住这个知识点有些技巧。记忆的关键是DIAMOND@MIT。DIMOND就是钻石了。MIT就是麻省理工学院。想象一下，作为毕业于麻省理工的钻石王老五，感觉有多好！
现在将其和ACTIVITY联系一下。从DIAMOND开始
- D – DEMAND MANAGEMENT
- I – ITERATION ACTIVITY。就是后面的@MIT。
- A – APPLICATION SIZING
- M – MODELING
- D – CAPACITY DATABASE
再看@MIT
- @ - Analysis
- M – Monitoring
- I – Implementation
- T – Turning
总结起来，好象还少了CAPACITY PLAN，就再加个PLAN。这样DIAMOND@MIT + PLAN就将所有的ACTIVTY搞定了。
这种东西，OGC书本上是没有的，培训教材也不肯能写得出，只有本书很你分享了。
CAMSUB-PROCESS
基因代码 | 知识点名称 | 记忆等级 | 知识点内容 |
CAM003 | CAMSUB-PROCESS | D1 | Business Capacity Management/ Service Capacity Management / Resource Capacity Management |
CAPACITY MANAGEMENT是OGC中，唯一有SUB PROCESS的流程。
APPLICATION SIZING
基因代码 | 知识点名称 | 记忆等级 | 知识点内容 |
CAM004 | APPLICATION SIZING | D2 | Estimate the resource requirement to support a proposed application – change or new application. |
DEMAND MANAGEMENT
基因代码 | 知识点名称 | 记忆等级 | 知识点内容 |
CAM005 | DEMAND MANAGEMENT | D2 | Influence the demand for computing resource and use of the resource. |
DEMAND MANAGEMENT和FINANCIAL MANAGEMENT OF IT SERVICE中的CHARGING POLICY有很紧密的联系。IT可以通过设定一定的收费法则来影响用户对IT资源的使用。
MODELLING
基因代码 | 知识点名称 | 记忆等级 | 知识点内容 |
CAM006 | MODELLING | D2 | Predict the behavior. of IT Service under a given volume and variety of work. Trend analysis: future resource, less effective at response time estimation. Low cost Analytical Modeling: using mathematical techniques, less time and effort than simulation and less accuracy. Simulation: takes time and effort to prepare. Baseline: High cost. depends on accurate baseline. |
在此处给出了MODELLING的四个手段：TREND ANALYSIS，ANALYTICAL MODELING，SIMULATION，BASELINE。他们预测的精度由低到高排列。相对的缺点的限制也在知识点内容中表达了。
PERFORMANCE MANAGEMENT
基因代码 | 知识点名称 | 记忆等级 | 知识点内容 |
CAM007 | PERFORMANCE MANAGEMENT | D2 | Measuring, monitoring and turning the performance of IT infrastructure. |
<本节待续...>
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