Introduction to Microsoft Windows 2000 Integrated support for client/server and peer-to-peer networks Increased reliability, availability, and scalability Reduced TCO Internet and application support

Windows 2000 Professional A high-performance, secure-network client computer and corporate desktop operating system that incorporates the best business features of Microsoft Windows 98 and builds on the traditional strengths of Microsoft Windows NT Workstation

Windows 2000 Server A file, print, and application server, as well as a Web-server platform, that contains all the features of Windows 2000 Professional plus many new server-specific functions

Windows 2000 Advanced Server A more powerful departmental and application server operating system that includes the full feature set of Windows 2000 Server and adds the advanced high availability and improved scalability required for enterprise and larger departmental solutions

Windows 2000 Datacenter Server A specialized high-end version of Windows 2000 Server designed for large-scale enterprise solutions and optimized for large data warehouses, econometric analysis, large-scale simulations in science and engineering, online transaction processing, and server consolidation projects

Features of Windows 2000 Lower TCO Security Directory services Performance and scalability Networking and communication services Internet integration Integrated administration tools Hardware support

Windows 2000 Architectural Overview

Architectural Layers User mode Kernel mode

User Mode Environment subsystems Integral subsystems

Environment Subsystems Win32 POSIX

Integral Subsystems Security Workstation service Server service

Kernel Mode Executive Hardware Abstraction Layer (HAL) Kernel-mode drivers

Windows 2000 Executive Performs most of the I/O and object management Provides system services and internal routines Includes many management components

Hardware Abstraction Layer Virtualizes the hardware interface details Contains hardware-specific code that handles I/O interfaces, interrupt controllers, and multiprocessor communication mechanisms Implemented as a DLL and responsible for all hardware-level, platform-specific support

Kernel-Mode Drivers

Windows Driver Model (WDM) Subset of intermediate level Supports Windows 2000 and Windows 98 devices Based on a class/miniport structure

WDM Layered Architecture Miniport Class OS services Virtualization

Directory Stored collection of information about objects Database of network objects Information related to network resources to facilitate locating and managing objects

Directory Service Identifies users and resources Provides a way to organize and access users and resources Allows you to perform a number of functions Acts as administration tool and end-user tool

Windows 2000 Workgroups

Windows 2000 Domains

Windows 2000 Active Directory Services Introduction to Active Directory services Active Directory features Active Directory structure

Introduction to Active Directory Services Included in Windows 2000 Provides a single point of network management Includes the directory Organizes resources hierarchically

Active Directory Features Scalability Open standards support Domain Name System (DNS) Lightweight Directory Access Protocol (LDAP) Standard name formats

Active Directory Structure Logical structure Physical structure

Logical Structure Objects Organizational units (OUs) Domains Trees Forests

Trees

Forests One or more sets of trees Disjointed namespaces between trees Kerberos transitive trust relationships Common schema Global catalog

Trust Relationships One-way explicit trusts (Windows NT) Two-way transitive trusts (Windows 2000)

One-Way Explicit Trusts

Two-Way Transitive Trusts

Physical Structure Domain controllers Sites