1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T Y.3510 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2016) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES Cloud Computing Cloud
2、 computing infrastructure requirements Recommendation ITU-T Y.3510 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 Services, applications
3、 and middleware Y.200Y.299 Network aspects Y.300Y.399 Interfaces and protocols Y.400Y.499 Numbering, addressing and naming Y.500Y.599 Operation, administration and maintenance Y.600Y.699 Security Y.700Y.799 Performances Y.800Y.899 INTERNET PROTOCOL ASPECTS General Y.1000Y.1099 Services and applicati
4、ons Y.1100Y.1199 Architecture, access, network capabilities and resource management Y.1200Y.1299 Transport Y.1300Y.1399 Interworking Y.1400Y.1499 Quality of service and network performance Y.1500Y.1599 Signalling Y.1600Y.1699 Operation, administration and maintenance Y.1700Y.1799 Charging Y.1800Y.18
5、99 IPTV over NGN Y.1900Y.1999 NEXT GENERATION NETWORKS Frameworks and functional architecture models Y.2000Y.2099 Quality of Service and performance Y.2100Y.2199 Service aspects: Service capabilities and service architecture Y.2200Y.2249 Service aspects: Interoperability of services and networks in
6、NGN Y.2250Y.2299 Enhancements to NGN Y.2300Y.2399 Network management Y.2400Y.2499 Network control architectures and protocols Y.2500Y.2599 Packet-based Networks Y.2600Y.2699 Security Y.2700Y.2799 Generalized mobility Y.2800Y.2899 Carrier grade open environment Y.2900Y.2999 FUTURE NETWORKS Y.3000Y.34
7、99 CLOUD COMPUTING Y.3500Y.3999 INTERNET OF THINGS AND SMART CITIES AND COMMUNITIES General Y.4000Y.4049 Definitions and terminologies Y.4050Y.4099 Requirements and use cases Y.4100Y.4249 Infrastructure, connectivity and networks Y.4250Y.4399 Frameworks, architectures and protocols Y.4400Y.4549 Serv
8、ices, applications, computation and data processing Y.4550Y.4699 Management, control and performance Y.4700Y.4799 Identification and security Y.4800Y.4899 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Y.3510 (02/2016) i Recommendation ITU-T Y.3510 Cloud computing
9、 infrastructure requirements Summary Recommendation ITU-T Y.3510 provides requirements for cloud computing infrastructure; these include the essential capabilities for processing, storage and networking resources, as well as the capabilities of resource abstraction and control. History Edition Recom
10、mendation Approval Study Group Unique ID* 1.0 ITU-T Y.3510 2013-05-22 13 11.1002/1000/11918 2.0 ITU-T Y.3510 2016-02-13 13 11.1002/1000/12713 Keywords Capability, cloud computing, control, infrastructure, networking, processing, resource abstraction, storage. * To access the Recommendation, type the
11、 URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T Y.3510 (02/2016) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in
12、 the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to st
13、andardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is
14、 covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to
15、indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is ac
16、hieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTU
17、AL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether
18、asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautio
19、ned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2016 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of IT
20、U. Rec. ITU-T Y.3510 (02/2016) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 2 5 Conventions 3 6 Overview of cloud infrastructure 3 7 Requirements for processing resource
21、s 4 7.1 Physical machine requirements 4 7.2 Virtual machine requirements 4 7.3 Software resources provisioning requirements 5 7.4 Time-sensitive services requirements . 6 8 Requirements for networking resources . 6 8.1 General requirements for networking resources . 8 8.2 Access and core transport n
22、etwork . 8 8.3 Intra-datacentre network . 8 8.4 Inter-datacentre network . 9 9 Requirements for storage resources 9 9.1 Storage space 9 9.2 Storage interface . 9 9.3 Storage management 10 9.4 Storage availability . 10 9.5 Data de-duplication 10 10 Requirements for resources abstraction and control .
23、 10 11 Support of emergency telecommunications 11 12 Security considerations . 11 Appendix I Overview and reference model for storage in a cloud environment 12 I.1 Reference model for cloud storage . 12 Appendix II Considerations on resource monitoring 15 II.1 Health monitoring . 15 II.2 Performance
24、 monitoring . 15 II.3 Capacity monitoring . 15 II.4 Security and compliance monitoring 16 II.5 Monitoring and metering for charging and billing . 16 II.6 Monitoring in support of cloud services . 16 Appendix III Power management in cloud infrastructure . 18 iv Rec. ITU-T Y.3510 (02/2016) Page Append
25、ix IV Considerations on supporting of ETS . 19 Bibliography. 20 Rec. ITU-T Y.3510 (02/2016) 1 Recommendation ITU-T Y.3510 Cloud computing infrastructure requirements 1 Scope This Recommendation identifies requirements for cloud infrastructure to support cloud services. The scope of this Recommendati
26、on includes: an overview of cloud computing infrastructure; requirements for processing resources; requirements for networking resources; requirements for storage resources; requirements for resource abstraction and control. 2 References The following ITU-T Recommendations and other references conta
27、in provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the
28、 possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a R
29、ecommendation. ITU-T X.1601 Recommendation ITU-T X.1601 (2015), Security framework for cloud computing. ITU-T Y.3500 Recommendation ITU-T Y.3500 (2014) | ISO/IEC 17788:2014, Information technology Cloud computing Overview and vocabulary. ITU-T Y.3501 Recommendation ITU-T Y.3501 (2013), Cloud computi
30、ng framework and high-level requirements. ITU-T Y.3502 Recommendation ITU-T Y.3502 (2014) | ISO/IEC 17789:2014, Information technology Cloud computing Reference architecture. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 cloud computi
31、ng ITU-T Y.3500: Paradigm for enabling network access to a scalable and elastic pool of shareable physical or virtual resources with self-service provisioning and administration on-demand. NOTE Examples of resources include servers, operating systems, networks, software, applications, and storage eq
32、uipment. 3.1.2 cloud service ITU-T Y.3500: One or more capabilities offered via cloud computing invoked using a defined interface 3.1.3 cloud service customer ITU-T Y.3500: Party which is in a business relationship for the purpose of using cloud services. NOTE A business relationship does not necess
33、arily imply financial agreements. 2 Rec. ITU-T Y.3510 (02/2016) 3.1.4 cloud service provider ITU-T Y.3500: Party which makes cloud services available. 3.1.5 emergency telecommunications (ET) b-ITU-T Y.2205: ET means any emergency related service that requires special handling from the NGN relative t
34、o other services. This includes government authorized emergency services and public safety services. 3.1.6 emergency telecommunications service (ETS) b-ITU-T E.107: A national service providing priority telecommunications to ETS authorized users in times of disaster and emergencies. 3.1.7 logical re
35、source b-ITU-T Y.3011: An independently manageable partition of a physical resource, which inherits the same characteristics as the physical resource and whose capability is bound to the capability of the physical resource. NOTE “independently“ means mutual exclusiveness among multiple partitions at
36、 the same level. 3.1.8 management system b-ITU-T M.60: A system with the capability and authority to exercise control over and/or collect management information from another system. 3.1.9 virtual resource b-ITU-T Y.3011: An abstraction of physical or logical resource, which may have different charac
37、teristics from the physical or logical resource and whose capability may not be bound to the capability of the physical or logical resource. NOTE “different characteristics“ means simplification or extension of the resource characteristics. “different characteristics“ allows the virtual resource to
38、expose access or control methods different from the original physical or logical resource. 3.2 Terms defined in this Recommendation This Recommendation defines the following term: 3.2.1 hypervisor: A type of system software that allows multiple operating systems to share a single hardware host. NOTE
39、 Each operating system appears to have the hosts processor, memory and other resources, all to itself. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: CPU Central Processing Unit CSC Cloud Service Customer CSP Cloud Service Provider DFS Distributed Fil
40、e System DHT Distributed Hash Table DNS Domain Name System ET Emergency Telecommunications ETS Emergency Telecommunications Service I/O Input/Output iSCSI Internet Small Computer System Interface LAN Local Area Network NAS Network Attached Storage NFS Network File System Rec. ITU-T Y.3510 (02/2016)
41、3 NTP Network Time Protocol OS Operating System QoS Quality of Service SAN Storage Area Network SLA Service Level Agreement vCPU virtual CPU VI Virtual Infrastructure VM Virtual Machine VPN Virtual Private Network 5 Conventions In this Recommendation: The keywords “is required“ indicate a requiremen
42、t which must be strictly followed and from which no deviation is permitted if conformance to this document is to be claimed. The keywords “is prohibited“ indicate a requirement which must be strictly followed and from which no deviation is permitted if conformance to this document is to be claimed.
43、The keywords “is recommended“ indicate a requirement which is recommended but which is not absolutely required. Thus this requirement need not be present to claim conformance. The keywords “can optionally“ indicate an optional requirement which is permissible, without implying any sense of being rec
44、ommended. This term is not intended to imply that the vendors implementation must provide the option and the feature can be optionally enabled by the network operator/service provider. Rather, it means the vendor may optionally provide the feature and still claim conformance with the specification.
45、6 Overview of cloud infrastructure In this Recommendation, cloud infrastructure includes processing, storage, networking and other hardware resources as well as software assets. Abstraction and control of physical resources are essential means to achieve the on-demand and elastic characteristics of
46、cloud infrastructure. In this way, physical resources can be abstracted into virtual machines (VMs), virtual storages and virtual networks. The abstracted resources are controlled to meet cloud service customers (CSCs) needs. The main characteristics of cloud infrastructure are: Network centric: The
47、 cloud infrastructure consists of distributed resources including processing, storage and other hardware resources that are connected through the networks; On-demand resource provisioning: The cloud infrastructure dynamically provides resources according to CSCs needs; Elasticity: The cloud infrastr
48、ucture is capable of expanding or reducing its resources to accommodate the current workloads; High availability: The cloud infrastructure is capable of providing required resources under the conditions stated in the service level agreement (SLA); Resources abstraction: The underlying resources of c
49、loud infrastructure (processing, storage, networking, etc.) are invisible to the CSCs. NOTE For high level cloud computing requirements, please refer to ITU-T Y.3501. 4 Rec. ITU-T Y.3510 (02/2016) 7 Requirements for processing resources Processing resources are used to provide essential capabilities for cloud services and to support other system capabilities, such as resource abstraction and control, management, security and monitoring. The basic unit
