Jump to navigation. In the first two parts of this series, we discussed the hardware and software fundamentals for building network-attached storage NAS on a Raspberry Pi. We also put a proper backup strategy in place to secure the data on the NAS. In this third part, we will talk about a convenient way to store, access, and share your data with Nextcloud. To use Nextcloud conveniently, you have to meet a few prerequisites. First, you should have a domain you can use for the Nextcloud instance. For the sake of simplicity in this how-to, we'll use nextcloud. This domain should be directed to your Raspberry Pi. If you want to run it on your home network, you probably need to set up dynamic DNS for this domain and enable port forwarding of ports 80 and if you go for an SSL setup, which is highly recommended; otherwise port 80 should be sufficient from your router to the Raspberry Pi.
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Cloud computing  is the on-demand availability of computer system resources , especially data storage cloud storage and computing power , without direct active management by the user. If the connection to the user is relatively close, it may be designated an edge server. Clouds may be limited to a single organization enterprise clouds   , or be available to multiple organizations public cloud. Cloud computing relies on sharing of resources to achieve coherence and economies of scale. Advocates of public and hybrid clouds note that cloud computing allows companies to avoid or minimize up-front IT infrastructure costs. Proponents also claim that cloud computing allows enterprises to get their applications up and running faster, with improved manageability and less maintenance, and that it enables IT teams to more rapidly adjust resources to meet fluctuating and unpredictable demand,    providing the burst computing capability: high computing power at certain periods of peak demand. Cloud providers typically use a "pay-as-you-go" model, which can lead to unexpected operating expenses if administrators are not familiarized with cloud-pricing models. The availability of high-capacity networks, low-cost computers and storage devices as well as the widespread adoption of hardware virtualization , service-oriented architecture and autonomic and utility computing has led to growth in cloud computing. Cloud computing was popularized with Amazon. References to the phrase "cloud computing" appeared as early as , with the first known mention in a Compaq internal document.
The promise of the cloud is fast and cheap infrastructure, but that needs also be balanced with security and control. All cloud providers offer API integration to their services; Amazon has a vast array of services and completely documented APIs and even a Ruby SDK , making the work of creating integration with these services fairly easy—if you have the right tools. We created a series of handlers that are true to the API call, then assembled them in a task tree in the Kinetic Task workflow automation engine. This includes creating a security role, security policy, an instance profile, a virtual private cloud, subnet, internet gateway, creating and populating a route table, a secure certificate for logging on to the new server, creating a network interface…and finally starting up a new server instance.