A modern company’s IT infrastructure is the basis that helps solve business tasks effectively. We at SIM-Networks have been providing infrastructure services for over 10 years. This experience allows us to say that creating a company’s technological foundation requires a comprehensive approach. It’s not enough to buy a server or a cloud: the computing platform demands a set of conditions that will turn it into a coordinated system. In this article, we have formulated a checklist of 5 questions you should ask yourself when creating a reliable IT infrastructure.
Even if you use reliable equipment, hardware failures are always a risk. That is why each element of the system must have a reserve copy for fault tolerance. Redundancy must be organized on the architectural level and within each individual node using technology such as RAID. The data center where your infrastructure is located also affects availability. It is advisable to choose a data center classified as Tier III or above. The availability of servers in such data centers does not depend on a single power source, cooling system etc.
The specifics of organizing fault tolerance largely depend on the infrastructural platform. For example, the architecture of cloud platforms allows virtual machines to use the resources of another physical server if a node happens to fail. This switch happens automatically and without interrupting the VM’s functioning. In addition, some cloud providers offer multiple availability zones – independent segments of a single infrastructure. Each segment uses its own computing nodes, power supply systems, cooling systems etc. Hardware failures in one availability zone will not affect the servers in the other zone.
Creating a fault-tolerant infrastructure based on traditional server solutions is a more expensive task. Server clustering is the most reliable way to achieve this goal. The technology unites dedicated servers into a single system so that the machines can seamlessly transfer workloads in case of failures. When considering this solution, compare the potential costs with the company’s actual need for computing resources. If your business needs the power of multiple physical servers to solve tasks effectively, a cluster will become a reliable foundation for your fault-tolerant system.