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| 作者：不明 来源：www.pccode.net 整理 发布时间：2007-1-24 15:21:14 发布人：wongrs | |
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400 There are currently two Windows NT 4.0 account domains. All user accounts are in these domains. There is one resource domain in each of the seven geographic locations. There are account domains in Washington, D.C., and San Francisco. BDCs are distributed throughout the company as needed. At the Washington location, there are two domain controllers running custom applications that will not run on Windows 2000. During the upgrade process, these domain controllers will remain on computers that run Windows NT 4.0. These domain controllers will be migrated at a later date. Network Infrastructure: There is a 44.736-Mbps line from San Francisco to the primary IT center in Washington, D.C. This line is used primarily for business applications. The 44.736-Mbps line has an average available bandwidth of 35 percent. There are 1.544-Mbps lines from Washington, D.C., to Denver, Boston, St. Petersburg, Seattle, and San Diego. There are also 1.544-Mbps lines from San Francisco to San Diego, Denver, and Seattle. The WAN links will be upgraded if more bandwidth is needed. Each location has one internal DNS server to manage the current UNIX environment. The current internal implementation of DNS does not support SRV records, dynamic update, Unicode characters, or incremental zone transfer. The IT staff members who currently maintain the DNS servers manage both the UNIX environment and the Windows NT Server environment. The external DNS systems for both the Contoso Research Web site and the Parnell Aerospace Web site are currently hosted on third-party ISP servers. The DNS modifications required for Windows 2000 will be designed to use the existing internal DNS structure. IT Infrastructure: The primary IT center is in Washington, D.C. There is also a major IT center in San Francisco. In many ways, the San Francisco research facility operates as an independent business unit. Since 1997, the IT department has been creating an increasingly centralized IT management structure. All account management is performed in Washington, D.C., and San Francisco. All Windows 2000 operations masters will remain in their default locations. The departments that must be supported by the IT infrastructure include the following: Administration Financial Human resources - managed as a single group by I Management Public relations Real e
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