HA/DR refers to High Availability / Disaster Recovery, which is typically a suite of technologies provided by a database engine vendor with the aim of increasing availability of data stored in the database, and providing a fast method of return-to-service after a disaster.

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AlwaysOn Architecture - SQL Server 2012 for creating a dev environment?

I was thinking if the AlwaysOn architecture in SQL Server 2012 can be leveraged somehow to create a replica for DEV and QA environment properly in addition to setting up HADR using the same ...
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Removing Databases in Recovery Pending Status after AG group was removed

I have removed a High Availability Group, disabled the option in sql configuration manager and restarted and I have also removed the Failover cluster components from windows and restarted. ...
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IBM DB2 v9.7 HADR TSA failure on the standby server

I have an environment here where I have 2 servers running DB2. One is the primary and the other one is standby. They replicate with HADR and failover is made automatically by TSA. What's the default ...