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2. High availability - Wikipedia

   en.wikipedia.org/wiki/High_availability

   High availability (HA) is a characteristic of a system that aims to ensure an agreed level of operational performance, usually uptime, for a higher than normal period. [ 1 ] There is now more dependence on these systems as a result of modernization.

3. High availability software - Wikipedia

   en.wikipedia.org/wiki/High_availability_software

   Availability of parallel and redundant components = 1 - (1 - X)^ N 10 hosts, each having 50% availability. But if they are used in parallel and fail independently, they can provide high availability. So for example if each of your hosts has only 50% availability, by using 10 of hosts in parallel, you can achieve 99.9023% availability.

4. High-availability cluster - Wikipedia

   en.wikipedia.org/wiki/High-availability_cluster

   High-availability clusters (also known as HA clusters, fail-over clusters) are groups of computers that support server applications that can be reliably utilized with a minimum amount of down-time. They operate by using high availability software to harness redundant computers in groups or clusters that provide continued service when system ...

5. Web hosting service - Wikipedia

   en.wikipedia.org/wiki/Web_hosting_service

   Cloud hosting users can request additional resources on-demand such as only during periods of peak traffic, while offloading IT management to the cloud hosting service. Clustered hosting – Having multiple servers hosting the same content for better resource utilization. Clustered servers are a perfect solution for high-availability dedicated ...

6. Content delivery network - Wikipedia

   en.wikipedia.org/wiki/Content_delivery_network

   A content delivery network or content distribution network (CDN) is a geographically distributed network of proxy servers and their data centers.The goal is to provide high availability and performance ("speed") by distributing the service spatially relative to end users.

7. Cloud computing - Wikipedia

   en.wikipedia.org/wiki/Cloud_computing

   Gartner defines a hybrid cloud service as a cloud computing service that is composed of some combination of private, public and community cloud services, from different service providers. [64] A hybrid cloud service crosses isolation and provider boundaries so that it cannot be simply put in one category of private, public, or community cloud ...