Yahoo web hosting - Part 3: Windows Server 2003 Upgrades and Migrations
Part 3: Windows Server 2003 Upgrades and Migrations Preparing for Upgrades and Migration Note Windows NT 4 groups are converted for Active Directory When upgrading Windows NT 4 to Windows Server 2003, local groups are upgraded to domain local groups, and global groups are upgraded to Active Directory global groups. Down-level clients continue to see the upgraded groups as their Windows NT 4 equivalents and will regard universal groups which don t exist in Windows NT as global groups. Upgrading Windows NT 4 Servers When you re upgrading servers that run Windows NT 4, you are likely to encounter incompatible or inadequate hardware, so you should give the system hardware and installed software a thorough review. After all, the baseline requirements for Windows NT 4 server hardware are quite a bit lower than for Windows Server 2003, which requires a minimum of a Pentium 133-megahertz (MHz) processor, 128 MB of RAM, and more than 2 GB of disk space. Another thing to remember is that Windows Server 2003 might not support some of the adapters and devices used in Windows NT 4 systems. As a result, you should expect to upgrade at least some components of the Windows NT 4 server hardware (upgrading the network adapter, for example, or adding a hard disk) to facilitate reasonable performance under Windows Server 2003. Chapter 7 For more information about the compatibility of specific adapters and devices, see the Windows Server Catalog at http://www.microsoft.com/Windows/catalog/server and the Hardware Compatibility List at http://www.microsoft.com/whdc/hcl/search.mspx. Inside Out Minimum requirements do not yield optimal results Technically, Windows Server 2003 will run on a 133-MHz Pentium with 128 MB of RAM. Performance would be far from optimal, however, and it is questionable whether such a server would actually make it into a production environment or how long it would last if it did. Consider the size of your network and the expected load on the server, and decide whether each upgraded server will perform adequately in your environment. If not, replace it if possible. Hardware is relatively inexpensive, especially when compared with the long-term costs and inconvenience brought about by using an outdated, inadequate, or unstable system.
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