Enterprise TechSQLWhat are SQL Server 2016 Basic Availability Groups Restrictions June 29, 20169573 views0Share By IG ShareTable of ContentsNote: If you buy something from our links, we might earn a commission. See our disclosure statement. ToggleWhat are SQL Server 2016 Basic Availability Groups RestrictionsBasic Availability Groups Restrictions in SQL Standard EditionBenefits of Basic Availability Groups compared to Database MirroringConclusionWhat are SQL Server 2016 Basic Availability Groups RestrictionsWith the release of SQL Server Always on Availability groups in 2012 Enterprise Edition, it became the De facto standard for High Availability and Disaster Recover Solutions. The reason why it was so successful was because of the flexibility that the solution provides. Scale-out reads, DR integration to an Azure VM, backups on secondary etc. As much as it is successful, its main limitation was its Enterprise Edition only feature restriction. Most SQL Standard deployments still relied on the older methods like Database Mirroring, Log shipping, 2 Node Clustering etc. That is something that has changed with SQL Server 2016. SQL 2016 introduces the basic availability groups. In this post, I am going to talk about what are SQL Server 2016 basic availability groups restrictions.Basic Availability Groups Restrictions in SQL Standard EditionFirst, You can only have one secondary Non-Readable replica. Which means, you cannot do read-only queries on the secondary or take backups.Only versions running SQL Server 2016 RTM is supported. CTP 3.0 is also supported for non-production use.You will not be able to Add-Remove replicas from a basic Availability group. You will need to rebuild the Availability group completely.Only 1 Database per availability group is supported. You can have multiple availability groups, subject to system resource restrictions.There are no direct migration paths to advanced availability groups in Enterprise Edition. You will need to break it up and rebuilt it manually.Benefits of Basic Availability Groups compared to Database MirroringBoth synchronous and asynchronous methods of database replication are now supported. In Database Mirroring, only synchronous with high safety is supported. This restricted DR planning over high latency WAN links.You can now have an asynchronous replica on an Azure IAAS VM. This enables you to have a DR site in a cost effective way.Note: You will need Software Assurance for License mobility rights.No more need for “Transparent Client Redirect” or Failover partner name to be mentioned in the connection string like in Database Mirroring. Using a listener, you can create a “virtual name” to which client applications can talk to. This enables a wider range of software applications which does not natively support database mirroring. No Backup & Read Options Options DisabledConclusionDatabase mirroring is planned to be deprecated in its future releases. For any new production deployment planning, basic availability groups need to be considered over Database mirroring for its benefits.Here is the Microsoft Official documentation for your reading pleasure. Affiliate Disclosure: Faceofit.com is a participant in the Amazon Services LLC Associates Program. As an Amazon Associate we earn from qualifying purchases. Share What's your reaction? Excited 0 Happy 0 In Love 0 Not Sure 0 Silly 0
Enterprise TechList of the Best Threadripper Pro Workstations – W-3100 Xeon W-3200 & W-1200 Alternatives By IGMay 25, 2021
Enterprise TechList of the Best HPTX Cases – Huge PC Cases for Large BuildsThe computer cases have been one of the essential aspects when it comes to enjoying ...
AzureBest Industrial IoT Routers & Gateways For AWS and Azure IoT ServicesIn this article, we are going to list out the Best Industrial IoT Routers for professional ...
Enterprise TechWhat Is A DataCenter Power Distribution Unit (pdu) Server Rack CabinetsNo matter whether you call it a server closet or server room or a cabinet, ...
Storage SystemsWD SE vs WD Red Pro Specifications Comparison – Enterprise Class NASThe HDDs or the Hard Disk drives are slowly moving into oblivion with the advancements ...