Windows Server 2003 Windows Server 2008

any services install have to need 2k3 CD 2k8 have notonly drive quota Disk Quota implements  Drive  and  Folders both

2008 has more inbuilt components and updated third party driversMicrosoft introduces new feature with 2k8 that is Hyper-V but only on 64bit versionsoutbound firewall as well as inbound, IIS 7 release, Read only Domain controllersServer Core provides the minimum installation required to carry out a specific server role, such as for a DHCP, DNS or print serverRole-based installation or, services are known as role in itRead Only Domain Controllers (RODC)

RIS WDS (windows deployment services)Network Access Protection Microsoft's system for ensuring that clients connecting to Server 2008 are patched, running a firewall and in compliance with corporate security policies.Power Shell Microsoft's new(ish) command line shell and scripting language has proved popular with some server administratorsBitlocker System drive encryption can be a sensible security measure for servers located in remote branch offices.

IIS6 IIS7updated support for Advanced Configuration and Power Interface (ACPI) processor power management (PPM) features, including support for processor performance states (P-states) and processor idle sleep states on multiprocessor systems. These features simplify power management in Windows Server 2008 (WS08) and can be managed easily across servers and clients using Group Policies.shadow copy for each and every folders

2003 it is 16 as well as 32 bit installation is 32 bitservices services are known as role in it

Group policy editor is a separate option in adsinstall fully O.S full version(install all services& applications) or

server coreActive Directory Active Directory DomainServices (AD DS)

network transfer speeds 45 timesService-based installation Role-based installation

Enhanced terminal servicesAD DS: Restartable Active Directory Domain Services

Windows Server 2008 introduces new capabilities to start or stop directory services running on a domain controller without having to shut it down, allowing administrators to perform maintenance (offline defragmentation, security updates, etc.) or recovery on the AD database without having to reboot into Directory

Windows Server 2003, Active Directory audit logs can show you who made changes to what object attributes, but the events do not display the old and new values

In Windows Server 2008 you can now set up AD DS auditing with a new audit subcategory (Directory Service Changes) to log old and new values when changes are made to objects and their attribute

Ipv4 Ipv6 and ipv4Database Mounting Tool (Dsamain.exe)is a command line tool

that allows administrators to view snapshots of

data within an AD DS database (it can also be used with AD Lightweight Directory Services databases). The tool can improve recovery processes for your organization, by providing means to compare data as it exists in snapshots or backups that are taken at different times, so that you can better decide which data to restore after data loss. This eliminates the need to restore multiple backups to compare the Active Directory data that they containFine-Grained Password Policies

One very significant change with Windows Server 2008 AD DS is the ability to implement granular password polices in a single domain. Fine-grained password polices always take precedence over domain password policy and they can be applied to groups or users. For fine-grained password polices to be implemented, all DCs must be running Windows Server 2008 and the domain must be in Windows Server 2008 functional level.

Run chkdsk Self-healing NTFSSupport for incremental zone transfer between serversconfiguration of both Windows Firewall and Internet Protocol security (IPsec) are combined into a single toolIn Server 2008 you can stop the active directory services

windows 2003 we caninstall both way( typing DCPROMO in RUN( or (through Manage your Server Wizard)

in windows 2008 server we need to install activedirectory through command dcpromo

Top 10 new features in Windows Server 2008

The self-healing NTFS file systemParallel session creationClean service shutdownKernel Transaction ManagerSMB2 network file systemAddress Space Load Randomization (ASLR)Windows Hardware Error Architecture (WHEA)Windows Server VirtualizationPowerShellServer Core

Difference between roles and Features

Roles as major functions of the server and Features as smaller add-on packages

Roles Features

Windows AD/DC Server, DNS, DHCP, File, Print, NAP,

.NET, Bitlocker Encryption, BITS, Remote Assistance, SMTP Server, SNMP,

Terminal Server, IIS, WDS, WSS

telnet server & client, failover, NLB, TFTP, Windows Server Backup, WINS,  Powershell

New Features of Active Directory 2008

AuditingFine-Grained PasswordsRead-Only Domain ControllerRestartable Active Directory Domain ServicesDatabase Mounting ToolActive Directory Recycle BinActive Directory module for Windows PowerShellActive Directory Administrative CenterActive Directory Best Practices AnalyzerActive Directory Web ServicesOffline domain joinManaged Service AccountsActive Directory Management Pack

New features of DNS 2008

Background zone loadingIP version 6 supportSupport for read-only domain controllers (RODCs)Global single namesGlobal query block listDNS Security Extensions (DNSSEC)DNS Cache Locking

New Features of Group Policy 2008

• New Administrative template files (ADMX)• New Policy settings o Power options o Block device installation o Improved security settings o Internet Explorer settings management o Assign printers based on location o Delegate printer driver installation to users

• Group Policy slow link detection• SYSVOL replication change• SYSVOL uses DFS Replication service to replicate Group Policy object files to other domain controllers (In windows server 2003 uses FRS to replicate this)• Group Policy slow link detection• Internet Explorer settings management• Blocking device installation• SYSVOL replication change

Different Versions of Windows Server 2008

         Windows Server 2008 Standard         Windows Server 2008 Enterprise         Windows Server 2008 Datacenter         Windows Server 2008 for Itanium-Based Systems         Windows Web Server 2008         Windows Server 2008 Standard without Hyper-V         Windows Server 2008 Enterprise without Hyper-V         Windows Server 2008 Datacenter without Hyper-V

The next release would be

Microsoft Hyper-V Server