Installing SQL Server can be deceptively simple. The installation wizard makes it tempting to just click “Next, Next, Finish,” accepting all the default settings. However, this approach can lead to significant performance issues, security vulnerabilities, and even data loss. At BAS Technologies, our expert DBA services ensure your SQL Server environment is optimized and secure from the outset. Here, we’ll explore the most common pitfalls during SQL Server installation and how to avoid them.

1. Improper Storage Configuration

The Problem: By default, SQL Server places database files, transaction logs, and TempDB on the system drive (usually C:). This increases contention, slows performance, and can cause critical failures if the drive fills up.

Solution:

• Separate data files, transaction logs, and TempDB onto dedicated drives or storage systems.
• Use high-speed SSDs for TempDB and transaction logs to improve I/O performance.

2. Poor TempDB Configuration

The Problem: The default installation creates TempDB with a single file, leading to contention in multi-threaded environments.

Solution:

• Configure multiple TempDB files, ideally one file per CPU core (up to 8).
• Ensure TempDB is on a high-performance disk to handle heavy workloads.

3. Inadequate Authentication Settings

The Problem: SQL Server defaults to Windows Authentication mode only. While secure, it may not meet all application requirements where SQL logins are needed.

Solution:

• If SQL logins are required, select Mixed Mode Authentication during installation.
• Enforce strong password policies and disable unused accounts like “sa”.

4. Default Instance Name

The Problem: SQL Server defaults to an unnamed (default) instance, which can lead to conflicts when multiple instances are needed.

Solution:

• Use a named instance to avoid conflicts and improve manageability.
• Clearly document the purpose of each instance.

5. Unrestricted Memory Usage

The Problem: SQL Server dynamically allocates memory up to the server’s total memory, potentially starving other applications or the OS.

Solution:

• Configure a maximum memory limit based on server resources and workload requirements.
• Leave at least 2-4 GB for the operating system.

6. Unnecessary Features Enabled

The Problem: The default installation may include features you don’t need, increasing the attack surface and consuming resources.

Solution:

• Only install features required for your workload (e.g., Reporting Services, Analysis Services).
• Regularly review and disable unused features.

7. Default Collation Settings

The Problem: SQL Server defaults to a collation based on the operating system (e.g., SQL_Latin1_General_CP1_CI_AS), which may not match your application’s requirements.

Solution:

• Select a collation that aligns with your application’s needs (e.g., case sensitivity, language support).
• Document collation choices for future reference.

8. Insufficient Backup Planning

The Problem: The default configuration does not include automated backups, risking data loss in case of corruption or failure.

Solution:

• Implement automated backup strategies for full, differential, and transaction log backups.
• Store backups offsite or in the cloud for disaster recovery.

9. Unoptimized Disk Space Allocation

The Problem: Default database sizes and auto-growth settings can lead to frequent growth operations, file fragmentation, and performance degradation.

Solution:

• Pre-allocate adequate sizes for data and log files.
• Use fixed-size auto-growth settings instead of percentage-based growth.

10. Failure to Monitor and Update

The Problem: Default installations lack performance monitoring and often run on outdated software versions, leading to undetected issues and vulnerabilities.

Solution:

• Regularly apply cumulative updates and patches.
• Implement performance monitoring tools, such as Extended Events or third-party solutions.

How BAS Technologies Can Help

At BAS Technologies, we understand that every SQL Server environment is unique. Our team of expert DBAs can:

• Perform a comprehensive database health check to identify risks and optimize performance.
• Assist with SQL Server installation and configuration to ensure best practices are followed.
• Set up automated backups, monitoring, and disaster recovery plans tailored to your needs.

As part of our holiday promotion, we’re offering free database health checks with annual support packages through December 24. Don’t leave your data at risk—partner with us to ensure your systems are secure and high-performing.

Get Started Today

Ready to optimize your SQL Server environment? Contact us to learn more about our expert DBA services or book a free consultation. Let us take the guesswork out of your SQL Server installation and configuration.