Steps for Installing AlwaysOn Availability Groups - SQL 2019

With SQL Server 2012 Microsoft introduced the AlwaysOn Availability Group feature, and since then many changes and improvements have been made.  This article is an update to another article, and will cover the prerequisites and steps for installing AlwaysOn in your SQL Server 2019 environment. Prerequisites Before implementing your AlwaysOn Availability Group (AG), make sure […]

All the Costs of Downtime

Downtime causes a lot of problems, not all of which are financial for an organization.

How to Measure Replication Latency in SQL Server AlwaysOn Synchronous Availability Groups

Synchronous replicas in SQL Server Availability Groups promise no data loss, but they don’t promise zero delay; under heavy load they can still fall behind. This article shows how to measure and track that hidden replication delay using SQL Server performance counters, so you can see how well your system keeps up during IO‑intensive operations and plan maintenance more safely.

PostgreSQL High Availability Options

We are deploying a new application that uses PostgreSQL database. My manager has asked me to design high availability into the implementation. As a SQL Server database administrator, I’ve been managing PostgreSQL databases for a while. However, I’m not sure which high availability options to implement. What are the different high availability options for PostgreSQL?

Contained Availability Groups in SQL Server 2022

SQL Server 2022 introduced a new feature called Contained Availability Groups. It allows the Database Administrators to effectively manage the Server Level objects, such as Logins, SQL Agent jobs, etc. in an HA environment. In today's article, we will learn about this new feature of SQL Server. The Challenge of Managing Server Objects in Availability […]

SQL Server 2022 Clusterless Distributed Availability Group

This article shows the final step of an availability group creation, specifically for a distributed clusterless one.

AG Rules for Databases

The AG Synchronous Replicas

The Secondary Database Name in an AG

Basic Always On Availability Groups in SQL Server Standard

Once Windows Server Failover Clusters have been set up, we can set up Availability Groups in SQL Server. This article will focus on setting up Basic Always-On Availability Groups in SQL Server Standard Edition.
This facilitates High Availability in SQL Server Standard, with three levels of availability and failover:
Asynchronous commit with manual or forced failover,
Synchronous commit with manual or forced failover,
Synchronous commit with automatic failover.