AlwaysOn Architecture Guide: Building a High Availability and Disaster Recovery Solution by Using AlwaysOn Availability Groups

SQL Server 2012 AlwaysOn Availability Groups provides a unified high availability and disaster recovery (HADR) solution that improves upon legacy functionality previously found across disparate features. Prior to SQL Server 2012, several customers used database mirroring to provide local high availability within a data center, and log shipping for disaster recovery across a remote data center. With SQL Server 2012, this common design pattern can be replaced with an architecture that uses availability groups for both high availability and disaster recovery. This paper details the key topology requirements of this specific design pattern, including quorum configuration considerations, steps required to build the environment, and a workflow that shows how to handle a disaster recovery event in the new topology.

The Personal Checksum

by Steve Jones

SQLServerCentral.com

Editorial

An interesting method of preventing restaurant fraud and a poll for other ways to determine the accuracy of data. This editorial was originally published on Nov 2, 2007. It is being republished as Steve is on vacation.

Using nmap to scan for SQL Servers on a network

by Additional Articles

MSSQLTips.com

nmap

I need to try and find all SQL Servers, not just the ones in my domain. We know there are a couple of appliances that are potentially running SQL Server and we want to see them, too. What can I use to do this?

Watch Your Mouth

by Steve Jones

SQLServerCentral.com

Editorial

The way you talk creates an impression at others. Steve Jones reminds us that we should be careful about using foul language.

The Seven Sins against T-SQL Performance

by Additional Articles

SimpleTalk

T-SQL

There are seven common antipatterns in T-SQL coding that make code perform badly, and three good habits which will generally ensure that your code runs fast. If you learn nothing else from this list of great advice from Grant, just keep in mind that you should 'write for the optimizer'.

AlwaysOn Availability Groups in SQL Server 2012

by Perry Whittle

SQLServerCentral.com

always on

This article discusses and demonstrates AlwaysOn Availability groups in SQL Server 2012, a new feature for high availability.

Shadow IT

by Steve Jones

SQLServerCentral.com

Editorial

There are often Shadow IT groups in many companies. Steve Jones talks about the potential problems of these groups, and how he has dealt with them in the past.