TCloud API, -- a RESTfull, resource-oriented API accessed via HTTP which uses XML-based representations for information interchange. It constitutes an extension of some of the main standardization initiatives in Cloud management, such as the Open Virtualization Format (OVF) and the vCloud specification (published by VMware) and submitted to the DMTF for consideration. Fernando López Aguilar Cloud Computing fla at tid dot es +34 914 832 729 Telefónica I+D (R&D) Ronda de la Comunicación s/n Distrito C, Edificio Oeste 1, Planta 5 28050 Madrid, Spain [cid:65E3CA3A-3DFE-41B6-8F69-2AD965EA42FA at hi.inet] El 21/06/2011, a las 16:29, Alex Glikson escribió: Please, see below the list of terms with their current descriptions for the HLDesc. Notice that I've refactored and/or consolidated some of the definitions. I've marked in blue places where I need your input. Of course, any other comments/suggestions are welcome. Thanks, Alex Infrastructure as a Service (IaaS) -- a model of delivering general-purpose virtual machines (VMs) and associated resources (CPU, memory, disk space, network connectivity) on-demand, typically via a self-service interface and following a pay-per-use pricing model. The virtual machines can be directly accessed and used by the IaaS consumer (e.g., an application developer, an IT provider or a service provider), to easily deploy and manage arbitrary software stacks. Platform as a Service (PaaS) -- an application delivery model in which the clients, typically application developers, follow a specific programming model to develop their applications and or application components and then deploy them in hosted runtime environments. This model enables fast development and deployment of new applications and components. Virtual Appliances (vApp, also referred to as "service") -- pre-built software solutions, comprised of one or more Virtual Machines that are packaged, updated, maintained and managed as a unit. Virtual appliances are typically packaged in an Open Virtualization Format (OVF), developed by Distributed Management Task Force (DMTF) standardization body. Key Performance Indicators (KPIs) -- quantifiable metrics reflecting the level of offered service with respect to specific non-functional requirements such as performance, availability, resiliency, etc. KPI is usually computed as a function of one or more low level metrics. KPIs may relate either to the long term measures of the service level where raw metrics are averaged and summarized over a long time scale to guide strategic decisions about the service provisioning, or short term measures of service level, triggering proactive optimization. Service Elasticity is the capability of the hosting infrastructure to scale a service up and down on demand. There are two types of elasticity -- vertical (typically of a single VM), implying the ability to add or remove resources to a running VM instance, and horizontal (typically of a clustered multi-VM service), implying the ability to add or remove instances to/from an application cluster, on-demand. Elasticity can be triggered manually by the user, or via an Auto-Scaling framework, providing the capability to define and enforce automated elasticity policies based on application-specific KPIs. SLAs and SLOs -- [David, can you, please, provide a definition?] Cloud Edge -- [Serge, can you, please, provide a non-recursive definition?] a set of devices at the edge of the cloud. May correspond to end-devices [Serge: not clear what is 'end-device'] or to a more complex structure like a home network with end-devices and a Cloud Proxy -- a special device located in the home network and offering storage and computing capabilities to the cloud applications so that they can use it as their agent close to the end-devices [Serge, please, specify the purpose instead of saying "agent"-- e.g., improved user experience, security, etc]. TCloud API -- [Fernando, can you, please, provide a concise, self-explanatory definition?] OCCI -- [Andy, can you, please, provide a definition?] Cloud Data Management Interface (CDMI) defines the functional interface that applications will use to create, retrieve, update and delete (CRUD) data elements from the Cloud defined by the Storage Networking Industry Association (SNIA) group <ATT00001..txt> ________________________________ Este mensaje se dirige exclusivamente a su destinatario. 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