Is there any difference between Domain controller and Active directory? - Server Fault
Active Directory (officially Active Directory Domain Services) is a set of network services (LDAP for directory, Kerberos and NTLM for authentication, and several . Active Directory (AD) is a directory service that Microsoft developed for the Windows domain .. Servers joined to Active Directory that are not domain controllers are called Member Servers. . in different trees or in the same tree when a descendant/ancestor (child/parent) relationship does not exist between the two domains. A domain controller is the centerpiece of the Windows Active Directory service. A domain controller gives access to another domain in a trust relationship so.
Policies can also be defined at the site level. Each DC has a copy of the Active Directory. Servers joined to Active Directory that are not domain controllers are called Member Servers. Global catalog GC servers provide a global listing of all objects in the Forest. However, to minimize replication traffic and keep the GC's database small, only selected attributes of each object are replicated.
This is called the partial attribute set PAS. Replication[ edit ] Active Directory synchronizes changes using multi-master replication. Intrasite replication is frequent and automatic as a result of change notification, which triggers peers to begin a pull replication cycle.
Intersite replication intervals are typically less frequent and do not use change notification by default, although this is configurable and can be made identical to intrasite replication. Each link can have a 'cost' e. Replication may occur transitively through several site links on same-protocol site link bridges, if the cost is low, although KCC automatically costs a direct site-to-site link lower than transitive connections.
Difference Between Active Directory and Domain
Site-to-site replication can be configured to occur between a bridgehead server in each site, which then replicates the changes to other DCs within the site. Replication for Active Directory zones is automatically configured when DNS is activated in the domain based by site. SMTP cannot be used for replicating the default Domain partition.
Backup and restore of Active Directory is possible for a network with a single domain controller,  but Microsoft recommends more than one domain controller to provide automatic failover protection of the directory. Combining them can make configuration or troubleshooting of either the domain controller or the other installed software more difficult.
What is a Domain Controller? - Definition from Techopedia
Physical hardware costs for the many separate servers can be reduced through the use of virtualizationalthough for proper failover protection, Microsoft recommends not running multiple virtualized domain controllers on the same physical hardware. Microsoft has created NTDS databases with more than 2 billion objects. DIT, it has two main tables: Each domain is assigned a separate database account, and an administrator manages all objects under a domain. The security system is responsible for providing access to users with authentic login credentials.
Domain is responsible for the working of Active Directory. Multiple domains are set up for avoiding issues if one domain is down. This way the system continues with its normal functioning even when a domain breaks down.
- Active Directory
Domain can also refer to the set of network addresses on the Internet. In the field of computing, it is a source of program entities or a collection of network addresses.
Active Directory is a network administration concept that stores information and provides conditional access to it while domain is a collection of computers that work under a common name, database, and policies. The second level is the tree which holds multiple domains. The network administrators employ active directory in order to simplify the maintenance process of the network in case of large organizations.
Active directories are also used to provide permissions to specific users. Domain Domain is defined as the group of computers on a network that share common name, policies and database. It is the third level in active directory hierarchy. The active directory has the ability to manage millions of objects in a single domain. Domains act as containers for administrative assignments and security policies.
By default, all the objects in a domain share common policies that are assigned to the domain.