Server Core, Windows without Windows
"One of the most innovative features coming in Windows "Longhorn" Server isn't really a feature as much as a whole new version of Windows. It's called Server Core, and it will only take one-sixth of the disk space of a normal Longhorn installation. It's not expected to need anywhere near as many patches and hotfixes as Windows 2000. It's a version of Windows that does not, in fact, use windows. It's breaking Microsoft's long-standing reliance on graphical interfaces and shaking things up in several of Microsoft's product groups.
Server Core reflects a changing view of servers. "Administrators are accustomed to thinking of servers by their role. That's my file server, that's a domain controller, that's an Exchange server," says Andrew Mason, a Microsoft program manager for Server Core. Some of those roles really don't use much of what is built into Windows.
Server Core also recognizes -- based on painful experience -- that fewer "moving parts" in an operating system equates to fewer vulnerabilities, stability issues and maintenance points. Reducing the amount of code can help reduce the amount of bugs. That's what Server Core is all about."
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