The SQL Server DBA team has a policy against supporting "all-in-one" systems, where applications and databases are hosted on the same server. This policy is in place to ensure optimal performance, security, and maintainability of our database systems.
Reasons for the Policy
Performance
Resource Contention: Hosting both applications and databases on the same server can lead to resource contention. Applications and databases often compete for CPU, memory, and disk I/O, which can degrade the performance of both.
Scalability: Separating applications and databases allows for better scalability. Each component can be scaled independently based on its specific resource requirements.
Security
Isolation: Keeping applications and databases on separate servers enhances security by isolating potential vulnerabilities. If an application is compromised, the database remains protected on a different server.
Access Control: It is easier to implement and manage access controls when applications and databases are on separate servers. This reduces the risk of unauthorized access to sensitive data.
Maintainability
Simplified Troubleshooting: When issues arise, it is easier to diagnose and resolve problems when applications and databases are on separate servers. This separation simplifies the identification of performance bottlenecks and other issues.
Independent Updates: Applications and databases often require updates and patches. Keeping them on separate servers allows for independent updates without affecting the other component, reducing downtime and minimizing the risk of compatibility issues.
Disaster Recovery
Improved Recovery: In the event of a server failure, having applications and databases on separate servers improves disaster recovery capabilities. Each component can be restored independently, reducing recovery time and ensuring business continuity.
Exceptions to the Policy
Third-Party Applications
Some third-party applications have unique configurations that do not support separation of application and database components and may qualify for exceptions. In such cases, exceptions may be granted if the application is critical to business operations and no alternative technical solutions are available. In these cases, a Memorandum of Understanding (MOU) will be developed to ensure there are secure, efficient, and appropriate access practices to the system for all parties responsible for its support.
Temporary Solutions
In situations where a temporary "all-in-one" setup is necessary to meet urgent business needs, an exception may be granted with a clear plan for transitioning to a compliant setup within a specified time frame.
Emergency Situations
In emergency situations where immediate action is required to maintain business continuity, exceptions may be granted.
Conclusion
Our policy against "all-in-one" systems is designed to ensure the highest levels of performance, security, maintainability, and disaster recovery for SQL Server database systems. By adhering to this policy and following best practices for server setup, we can provide a more reliable and efficient service to our users, ultimately improving their experience.
If you have any questions, need further clarification, or believe that you have a qualifying exception. please contact the SQL Server DBA team at ITS-SQL-Help@uiowa.edu