Businesses that rely on uninterrupted access to systems must ensure high availability, so setting up an infrastructure of highly available servers is of utmost importance. Here’s how you can do just that:

1. Redundancy Plans. To develop redundancy plans, first identify critical components and services. Implement redundancies across all aspects, such as servers, networking equipment, power sources and data storage to minimize failure effects. Redundancies help minimize their effects by helping protect critical assets in an emergency.
2. Load Balancing. Utilize load balancers to distribute traffic among multiple servers, thus avoiding overload on one computer and providing uninterrupted service during periods with high traffic levels. This prevents over-burdening on just one machine while guaranteeing smooth service delivery for users during these peak traffic periods.
3. Failover Methods. Establish a failover mechanism that will automatically redirect traffic in case of server failure, for example by clustering multiple servers into one unified system for seamless transitions.
4. Data Replication. To protect data across geographically dispersed locations, utilize redundant array independent disk technologies like RAID (Redundant Array of Independent Disks). Having local redundancy ensures data remains safe from damage or loss.
5. Plan Scalability. When designing systems, make scalability the highest priority. By adding or subtracting dynamic resources, ensuring the infrastructure can easily accommodate growing demands without strain on resources – cloud services provide many scalable solutions!
6. Monitoring Tools and Alerts. Use sophisticated tracking tools to constantly assess the performance and health of your system, setting alerts for any anomalies or potential issues for proactive intervention.
7. Regular Updates and Maintenance. Plan regular maintenance sessions to update software and firmware, to maintain system stability by keeping all components current.
8. Establish and Implement a Comprehensive Disaster-Recovery Plan. Create and implement an in-depth disaster recovery plan, outlining steps for various failure scenarios to recover data, restore systems and maintain operations. Include steps for recovering files as well as steps needed for continuing operations.
9. Testing And Simulation. Regularly conduct tests and simulations that simulate failure scenarios to validate the effectiveness and efficiency of your high-availability setup. This will serve to ensure its continued optimal operation.