本篇将介绍安装System Center Operations Manager 2012(SCOM 2012)之前需要提前安装的组件(包括了软件+Windows Server Roles)
SCOM安装文件提供了4种功能：
Management server
Operation console
Web console
Reporting server
Reporting server的要求在之前的文章中已经有介绍，本篇将介绍安装其他三个功能的要求(requirements)。
在安装出了Reporting server以外的三个功能前，服务器需要安装Microsoft Report Viewer 2010 Redistributable Package(4.5MB)以及以下Windows Roles：
Roles：Web Server Role (IIS)
Features:
Web Server
Common HTTP Features
Default Document
Directory Browsing
HTTP Errors
Static Content
Health and Diagnostics
HTTP Logging
Request Monitor
Performance
Static Content Compression
Security
Request Filtering
Windows Authentication
Application Development
.NET Extensibility 3.5
.NET Extensibility 4.5
ASP.NET 3.5
ASP.NET 4.5
CGI
ISAPI Extensions
ISAPI Filters
Management Tools
IIS Management Console
IIS 6 Management Compatibility
IIS 6 Metabase Compatibility
.NET Framework 3.5 Features
HTTP Activation
.NET Framework 4.5 Features
WCF Services
HTTP Activation
注意：你必须在安装.NET Framework 4之前安装IIS，如果你先安装了.NET Framework 4，你必须注册ASP.NET 4.0到IIS，不然你会得到以下报错：
The ISAPI and CGI Restrictions are disabled or missing.
ASP.NET 4.0 Registration Check
你需要用管理员身份打开CMD，然后输入以下命令：
%WINDIR%Microsoft.NETFramework64v4.0.30319aspnet_regiis.exe -r
