Always On 可用性群組可最大化企業一組使用者資料庫的可用性。「可用性群組」(Availability Group) 支援一組可一起容錯移轉之離散化使用者資料庫的容錯移轉環境,也就是所謂的「可用性資料庫」(Availability Database)。 可用性群組支援一組讀寫的主要資料庫,以及一到八組對應的次要資料...
The Always On availability groups feature is a high-availability and disaster-recovery solution that provides an enterprise-level alternative to database mirroring. Always On availability groups maximizes the availability of a set of user databases for an enterprise. Anavailability groupsupports a failov...
The Always On availability groups feature is a high-availability and disaster-recovery solution that provides an enterprise-level alternative to database mirroring. Always On availability groups maximizes the availability of a set of user databases for an enterprise. Anavaila...
Always On availability groups maximizes the availability of a set of user databases for an enterprise. An availability group supports a failover environment for a discrete set of user databases, known as availability databases, that fail over together. An availability group supports a set of read-...
An introduction to the concepts that are central for configuring and managing Always On availability groups for high-availability and disaster-recovery.
The Always On availability groups feature is a high-availability and disaster-recovery solution that provides an enterprise-level alternative to database mirroring. Always On availability groups maximizes the availability of a set of user databases for an enterprise. Anavai...
AlwaysOn支持的高可用单位是可用性组(AvailabilityGroup,简称AG),AG是包含了一个或多个用户数据库(User Database)的容器,AG里不能包含系统数据库;AG以用户数据库的集合为单位进行健康检测和故障转移,就是说,AG中的所有数据库作为一个整体发生故障转移。
For more information, see Active Secondaries: Backup on Secondary Replicas (AlwaysOn Availability Groups).Each set of availability database is hosted by an availability replica. Two types of availability replicas exist: a single primary replica. which hosts the primary databases, and one to four ...
SQLServer 2019开始全面支持“read-scale for an Always On availability group”,中文翻译的很别扭,是"读取缩放",繁体版翻译为“读取级别”,其特点不依赖于windows的cluster集群以及域,简化了搭建操作步骤和前置条件,与传统的availability groups类似,缺点是无法实现自动故障转移,本质上是一个不带自动故障转移的availabilit...
How to Setup AlwaysOn Availability Groups An Introduction to SQL Server Clusters– AlwaysOn relies on Windows clustering, but relax – this isn’t your grandfather’s clustering. Kendra Little explains the differences between shared disk clustering and the AlwaysOn Availability Groups clustering. ...