Example Scalable Solution

By firmly establishing a web layer behind a load balancer, you increase the number of concurrent visitors your site can handle. Each dedicated web server adds to your site's capacity. Also, as your site grows, you can continue to add dedicated servers behind the load balancer without having to take your site offline. This solution can be easily transformed into the Database HA Solution below when you are ready to firm up that layer with redundancy.

Example Database High Availability (HA) Solution

Setting up a database cluster provides you with redundancy on the database level so that if you sustain a failure on one of your dedicated servers, the other database server can continue functioning and serving data. Database clustering is handled differently in a Windows/MS SQL environment versus a Linux/MySQL environment and our sample depicts a Microsoft SQL Cluster utilizing a shared storage array. The addition of a dedicated backup server makes it possible to easily archive backups for each layer of your infrastructure. This solution allows you to have HA on both the Web and Database layers, and allows for growth into the Enterprise HA Solution below.

Example Complete HA / Enterprise Scalability Solution

Redundant firewalls and load balancers add high availability to your network device layer, meaning that any single device can be removed from this configuration and your site will remain online. With a firmly-established application layer, every component of your infrastructure is scalable, so as the demand on your site increases, you can target upgrades and additional dedicated servers directly to the areas that are causing a bottleneck.