Windows 2000 Active Directory data store, the actual database file, is %SystemRoot%\ntds\NTDS.DIT
Active Directory's database engine is the Extensible Storage Engine ( ESE )
The Active Directory database is stored on each domain controller in a file called NTDS.DIT
During ordinary operation, the white space in the Active Directory database file becomes fragmented. Each time garbage collection runs (every 12 hours, by default), white space is automatically defragmented online to optimize its use within the database file. The unused disk space is thereby maintained for the database; it is not returned to the file system.
The Active Directory Database is Stored in %SYSTEM ROOT%\NDTS folder.the active directory uses the sysvol folder as wellThe file is called as ntds.dit. Along with this file there are other files also present in this folder. The files are created when you run dcpromo. The list of files and use of those files are listed below1. ntds.dit : This is the main database file for active directory.2. edb.log : When a transaction performed to ad database, like writing some data first the data will be stored to this file. And after that it will be sent to database. So the system performance will be depends on how this data from edb.log file will be written to ntds.dit3. res1.log : Used as reserve space in the case when drive had low space. It is basically 10MB in size and creted when we run dcpromo.4. res2.log : Same as res1.log. It is also 10MB in size and the purspose also same.5. edb.chk : This file records the transactions committed to ad database. During shutdown, shutdown statement is written to this file. If it is not found when the system rebooted, the ad database tries to check with edb.log for the updated information.Edb corruption or Edb active directory corruption is really serious. However you can get this repaired by using edb repair tool.The Active Directory Database is Stored in %SYSTEM ROOT%\NDTS folder.the active directory uses the sysvol folder as well
NTDS.DIT
Ntds.dit
The Active Directory Database is Stored in %SYSTEM ROOT%\NDTS folder.the active directory uses the sysvol folder as wellThe file is called as ntds.dit. Along with this file there are other files also present in this folder. The files are created when you run dcpromo. The list of files and use of those files are listed below1. ntds.dit : This is the main database file for active directory.2. edb.log : When a transaction performed to ad database, like writing some data first the data will be stored to this file. And after that it will be sent to database. So the system performance will be depends on how this data from edb.log file will be written to ntds.dit3. res1.log : Used as reserve space in the case when drive had low space. It is basically 10MB in size and creted when we run dcpromo.4. res2.log : Same as res1.log. It is also 10MB in size and the purspose also same.5. edb.chk : This file records the transactions committed to ad database. During shutdown, shutdown statement is written to this file. If it is not found when the system rebooted, the ad database tries to check with edb.log for the updated information.Edb corruption or Edb active directory corruption is really serious. However you can get this repaired by using edb repair tool.The Active Directory Database is Stored in %SYSTEM ROOT%\NDTS folder.the active directory uses the sysvol folder as well
Active Directory
the centralized directory database in the domain model is NTDS.DIT(directory information tree) but for the local sstem not connected to domain is SAM
In Windows Server 2011 it is called Active Directory.
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