Instance Aware & Unaware Services

1. Instance Aware Services

Instance-aware services are associated with a specific instance of SQL Server, and have their own registry hives. We can install multiple copies of instance-aware services by running SQL Server Setup for each component or service.

i.e.

1. SQL Server

2. SQL Server Agent

3. Analysis Service

4. Reporting Service

5. Full-text search

2. Instance Unaware Services

Instance-unaware services are shared among all installed SQL Server instances. They are not associated with a specific instance, are installed only once, and cannot be installed side by side.

i.e.

1. Integration Services

2. SQL Server Browser

3. SQL Server Active Directory Helper

4. SQL Writer