Windows Server 2003 are new features:
- Support for SAN and iSCSI: Computers can connect to a Storage Server over the LAN, and there is no need for a separate fibre channel network. Thus a Storage Area Network can be created over the LAN itself. iSCSI uses the SCSI protocol to transfer data as a block of bytes, rather than as a file. This increases performance of the Storage network in some scenarios, such as using a database server.
- Distributed File System (DFS): DFS allows multiple network shares to be aggregated as a virtual file system.
- Software and Hardware RAID: Windows Storage Server 2003 has intrinsic support for hardware implementation of RAID. In case hardware support is not available, it can use software enabled RAID. In that case, all processing is done by the OS.
- Virtual Disc Service: It allows NAS devices, RAID devices and SAN shares to be exposed and managed as if they were normal hard drives.
- JBOD systems: JBOD (Just a bunch of discs) systems, by using VDS, can manage a group of individual storage devices as a single unit. There is no need for the storage units to be of the same make and model.
- Multi Path IO (MPIO): It provides an alternate connection to IO devices in case the primary path is down.
- Internet Information Services (IIS) v6.0
- Significant improvements to Message Queuing
- Manage Your Server – a role management administrative tool that allows an administrator to choose what functionality the server should provide
- Improvements to Active Directory, such as the ability to deactivate classes from the schema, or to run multiple instances of the directory server (ADAM)
- Improvements to Group Policy handling and administration
- Improved disk management, including the ability to back up from shadows of files, allowing the backup of open files.
- Improved scripting and command line tools, which are part of Microsoft's initiative to bring a complete command shell to the next version of Windows
- Support for a hardware-based "watchdog timer", which can restart the server if the operating system does not respond within a certain amount of time.
- Provides a backup system to restore lost files
Windows Server 2003(Storage) R2 is available in the following editions:
Express | Workgroup | Standard | Enterprise | |
Number of physical CPUs | 1 | 1–4 | 1–64 | |
x64 versions available | Yes | |||
Numbers of disk drives | 2 | 4 | Unlimited | |
NICs | 1 | 2 | Unlimited | |
Print service | No | Yes | ||
CALs required | No | |||
iSCSI target support | Optional | |||
Clustering | No | Yes | ||
Microsoft Windows Server 2003 Web Edition
It designed to perform tasks completely as Web server. It doomed to host Web pages, Web applications, and XML services and also supports IIS 6.0, ASP.NET, and the .NET Framework. Web Edition support maximum 2 processors and 2GB RAM. Client access licenses not required when connecting to Web Edition. However; only allowed 10 inbound real time SMB connections used for content publishing. This Server also allows installing third-party software like Apache, Application Center and My SQL.
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Standard is aimed towards small to medium sized businesses. Standard Edition supports file and printer sharing, offers secure Internet connectivity, and allows centralized desktop application deployment. A specialized version for the x64 architecture (AMD64 and EM64T, called collectively x64 by Microsoft) was released in April 2005.
Microsoft Windows Server 2003 Enterprise Edition
Windows Server 2003 Enterprise is aimed towards medium to large businesses. It is a full-function server operating system that supports up to 8 physical processors and provides enterprise-class features such as eight-node clustering using Microsoft Cluster Server (MSCS) software and support for up to 64 GB of RAM through PAE (added with the /PAE boot string). Enterprise Edition also comes in specialized versions for the x64 and Itanium architectures.
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