What are the pros and cons of Hyper-Converged infrastructures?

Advantages	Disadvantages

# Simplified deployments	# Greater power requirements

Streamlining the deployment of services is one of the major benefits of HCI solutions. Having single, virtualized networks means IT administrators don't have to spend time worrying about ensuring compatibility between products, as they’ll be working with a single vendor for all the necessary tools. As components come preconfigured, this avoids the time and energy needed to procure, integrate and implement traditional infrastructure.	HCI architectures include a lot of workloads in a limited space, which can often mean they draw more power than data centers have been designed for. While this can be tackled by offloading some workloads to the cloud where possible, administrators may need to look at reorienting their locations to ensure there are enough power and cooling solutions in place to meet demands, which can come with its own costs.

# Easier management	# Compatibility issues

Once systems are deployed, keeping them up and running effectively is also made much easier. Monitoring and optimizing HCI deployments is simple compared with legacy alternatives, with the automated software taking much of the day-to-day administration out of the hands of IT pros. What's more, when changes are required, administrators can work from a single management platform at a remote location, with basic processes like backups able to be completed through straightforward point-and-click operations.	It's important not to confuse the virtualization capabilities offered by HCI tools with a true cloud computing solution and therefore expect them to work seamlessly side by side. It can prove challenging for some HCI environments to effectively share resources across multiple systems and offload specific operations to cloud services. This is especially true when businesses are using equipment from multiple manufacturers.

# Better scalability	# Hardware interconnectivity

This simplicity also extends to adding to the system as and when required. Because HCI solutions are deployed as self-contained blocks called nodes, it's easy to add or remove them to clusters, which makes for a highly scalable solution. As long as they’re using nodes from the same vendors, admins won't have to worry about integration issues. This also means they can start relatively small and test HCI as proof of concept before building out without having to rearchitect their initial deployments.	Many HCI services are built around the idea that everything comes as a package from the same manufacturer, and if you're not careful, this can lead to issues such as vendor lock-in in order to guarantee performance. While it's usually possible to expand an HCI environment using low-cost commodity hardware, this is likely to lead to performance issues, as this won't work as well as a fully-converged platform that’s been configured specifically to work in that environment. This can often leave businesses facing a choice between price and performance when they come to scale up their systems.

# Reduced costs

The potential for lower costs may vary from business to business. But in general, firms can often make savings due to the fact HCIs reduce workloads and optimize the usage of resources. VMWare notes that some firms have seen their total cost of ownership fall by as much as 30%, while also allowing businesses to do more with less.

# Improved performance

Because HCIs operate as a single system, they can help improve the overall performance of your workloads. For example, a HCI solution can utilize both HDDs and SSDs for storage, ensuring that the different demands of various applications are met in the most cost-effective way. What's more, as storage and processing functions are kept close together, this reduces the need for cabling and, thereby, cuts down on latency.

# Greater reliability

Using software-defined infrastructure allows automated tools to take on tasks such as workload balancing and monitoring to make the best use of resources and keep a real-time eye on the health of a system, making adjustments as necessary to maintain performance. What's more, if there are any issues that cause one node to fail, others can step in to ensure continuity of service, boosting resilience and allowing admins to add or replace nodes without interrupting operations.