Global Data Availability - Searches
{"Image DocumentName": "Global Data Availability - Searches", "Image ImageDescription": "Windows 2000 Domain. AD Replica. Boston. San Diego. Chicago. AD Replica. Boston. Chicago. San Diego. AD Replica. Boston. Chicago. San Diego. Find: \u2018All. Bobs\u2019 Replication. Answer. Slide Objective: Show differences in AD and NDS WAN Replication technologies and the impact on performing directory searches. The first aspect of facilitating global data availability throughout the enterprise are Searches . In an enterprise directory environment searches are performed frequently to collect information stored in the directory about users, machines and network resources. In Active Directory a full and complete copy, or replica , of the entire Active Directory database for a given domain is located at every site, in this example San Diego, Chicago, and Boston, wherever there is a domain controller. Each replica is a fully write able copy so that changes to the directory can be made in any location with a domain controller. This is known as a mullti-master directory model. The directory replicas are kept in sync, through periodic replication, where only the attribute changes made to each local replica are propagated to all other sites. As a result all sites contain a full replica of the entire directory which can be searched locally, so that searches do not need to cross WAN links to obtain a complete result set. This architectural design improves read performance and provides redundancy in the event that a WAN link is lost. [Advances Slide Build] A simple example of this is shown above where a San Diego user submits a query looking for all Bobs against the local Active Directory replica. Instead of crossing to the Chicago and Boston sites to collect this information, the result set can be completely and assembled just from querying the local copy of the directory. These types of searches are very common in enterprises and could have just easily been done for such searches as Find all color printers or Find all Marketing Groups of Find all users with this phone number . Active Directory: Partitions map to Windows 2000 domains. Partitions can span many sites and WAN links. Optimizes replication automatically between sites and over slow network links. Impact: Faster and more complete searches.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}