Support for DNS Namespace planning in Microsoft server productsHelp and support for namespaces in Microsoft products including Single Label Domains (SLDs), Disjoint Namespaces, and Discontiguous Namespaces. OverviewThis Solution Center provides information on the use of namespace in Microsoft server products, including deployments with Single Label Domains (SLDs), Disjoint Namespaces, and Discontiguous Namespaces Single Label DomainsSingle-label DNS names are DNS names that do not contain a suffix such as .com, .corp, .net, or .org. For example contoso would be an SLD while contoso.com, contoso.net, or contoso.local would not be an SLD.Disjoint Namespaces A disjoint namespace occurs when one or more domain member computers have a primary Domain Name Service (DNS) suffix that does not match the DNS name of the Active Directory domain of which the computers are members. For example, a member computer that uses a primary DNS suffix of corp.fabrikam.com in an Active Directory domain named na.corp.fabrikam.com is using a disjoint namespace.Discontiguous Namespaces Discontiguous namespace, also referred to as non-contiguous namespace, is one in which the domains in a forest are not lined up in one hierarchical DNS tree. If the domains in a forest have discontiguous DNS names, they form separate domain trees within the forest. An Active Directory forest can have one or more domain trees. An example of a multi-tree forest would be a forest containing the domains, contoso.com and fabrikam.net. Key ResourcesNamespace Planning for Domain Name System (DNS) DNS Namespace Planning Namespace Planning Example Checklist: Deploying DNS for Active Directory Planning your Namespace Single Label Domains in Active Directory Domain Services Disjoint NamespacesDisjoint NamespacesA disjoint namespace occurs when one or more domain member computers have a primary Domain Name Service (DNS) suffix that does not match the DNS name of the Active Directory domain of which the computers are members. For example, a member computer that uses a primary DNS suffix of corp.fabrikam.com in an Active Directory domain named na.corp.fabrikam.com is using a disjoint namespace. Key ResourcesNamespace Planning for Domain Name System (DNS) DNS Namespace Planning Namespace Planning Example Disjoint Namespace Discontiguous NamespacesDiscontiguous NamespacesDiscontiguous namespace, also referred to as non-contiguous namespace, is one in which the domains in a forest are not lined up in one hierarchical DNS tree. If the domains in a forest have discontiguous DNS names, they form separate domain trees within the forest. An Active Directory forest can have one or more domain trees. An example of a multi-tree forest would be a forest containing the domains, contoso.com and fabrikam.net. Key ResourcesImplementation of Trees in Active Directory Single Label DomainsSingle Label DomainsSingle-label DNS names are DNS names that do not contain a suffix such as .com, .corp, .net, or .org. For example contoso would be an SLD while contoso.com, contoso.net, or contoso.local would not be an SLD. Although SLD is not a common configuration worldwide, some Microsoft products can be installed in an SLD and other uncommon namespace configurations; certain considerations may apply as noted by individual product groups. Existing products may continue to function with SLDs, but SLDs are not a recommended configuration for future deployments, and may not work with some products or versions. Other Microsoft or third party applications that end-users may wish to run in your environment may not be compatible on an SLD. Microsoft recommends that customers deploy infrastructure using common, tested configurations to minimize extra deployment and testing costs. Key ResourcesMicrosoft Support for Single Label Domains Information about configuring Windows for domains with single-label DNS names Administering Active Directory Domain Rename Active Directory Installation Warnings in Domains with Single Label DNS Names Unable to Select DNS Server Role when Adding a Domain Controller into an Existing Active Directory Domain Single Label Domains in Active Directory Domain Services Note: Active Directory, Single Label Domain (SLD) is not a Microsoft recommended configuration. Product CompatibilityProduct CompatibilityFor more information about namespace compatibility for a particular product, please choose one of the products listed below: BizTalk Server Migrating to FQDNMigrating to Fully Qualified Domain NamespaceFQDN (Fully Qualified Domain Name) sometimes referred to an absolute domain name is a domain name that specifies its exact location in the tree hierarchy of the Domain Name System (DNS). It specifies all domain levels including the top-level domain, relative to the root domain. Key ResourcesActive Directory Migration Tool (ADMT) Guide Renaming a Domain: Process and Side Effects Effects of Customer- User Account Migration on BPOS D/F |
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