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Topology and Orchestration Specification for Cloud Applications (TOSCA) is an OASIS standard language to describe a topology of cloud based web services, their components, relationships, and the processes that manage them. [1] The TOSCA standard includes specifications of a file archive format called CSAR.
Fat tree DCN employs commodity network switches based architecture using Clos topology. [3] The network elements in fat tree topology also follows hierarchical organization of network switches in access, aggregate, and core layers. However, the number of network switches is much larger than the three-tier DCN.
Cloud storage is generally deployed in the following configurations: public cloud, private cloud, community cloud, or some combination of the three also known as hybrid cloud. [4] In order to be effective, the cloud storage needs to be agile, flexible, scalable, multi-tenancy, and secure. [5]
Measured service: "Cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction appropriate to the type of service (e.g., storage, processing, bandwidth, and active user accounts). Resource usage can be monitored, controlled, and reported, providing transparency for both the ...
A storage area network (SAN) or storage network is a computer network which provides access to consolidated, block-level data storage. SANs are primarily used to access data storage devices, such as disk arrays and tape libraries from servers so that the devices appear to the operating system as direct-attached storage .
Hybrid cloud storage can be implemented by an on-premises cloud storage gateway that presents a file system or object storage interface which the users can access in the same way they would access a local storage system. The cloud storage gateway transparently transfers the data to and from the cloud storage service, providing low latency ...
Dropbox, which became available to users in 2008, is one of the household names in cloud storage. The company offers 2GB of free storage for photos, documents, videos and other files.
In these systems, content addressability allows highly variable network topology to be abstracted away from users who wish to access data, compared to systems like the World Wide Web, in which a consistent location of a file or service is key to easy use.