ETSI GS NFV-EVE 003 V1.1.1 (2016-01)

Network Functions Virtualisation (NFV); Ecosystem; Report on NFVI Node Physical Architecture Guidelines for Multi-Vendor Environment

DGS/NFV-EVE003

General Information

• Status: Published
• Publication Date: 07-Jan-2016
• Technical Committee: NFV EVE - Evolution and Ecosystem
• Current Stage: 12 - Completion
• Due Date: 28-Dec-2015
• Completion Date: 08-Jan-2016

Standards Content (Sample)

ETSI GS NFV-EVE 003 V1.1.1 (2016-01)






GROUP SPECIFICATION
Network Functions Virtualisation (NFV);
Ecosystem;
Report on NFVI Node Physical Architecture Guidelines
for Multi-Vendor Environment
Disclaimer
This document has been produced and approved by the Network Functions Virtualisation (NFV) ETSI Industry Specification
Group (ISG) and represents the views of those members who participated in this ISG.
It does not necessarily represent the views of the entire ETSI membership.

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2 ETSI GS NFV-EVE 003 V1.1.1 (2016-01)



Reference
DGS/NFV-EVE003
Keywords
architecture, NFV, NFVI

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Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definitions and abbreviations . 8
3.1 Definitions . 8
3.2 Abbreviations . 8
4 Principles for development of physical components . 9
4.1 Introduction . 9
4.2 General principles. 10
4.2.1 Observations . 10
4.2.2 High level goals for NFVI Nodes . 11
4.2.3 Other solution values . 11
4.3 Key criteria . 11
4.3.1 Space . 11
4.3.2 Power . 11
4.3.3 Cooling . 12
4.3.4 Physical interconnect . 12
4.3.5 Management . 12
4.3.6 Climatic . 12
4.3.7 Acoustic . 12
4.4 Open Compute Project . 13
5 Overview of node functions . 13
5.1 Introduction . 13
5.2 Compute node . 13
5.3 Storage node . 13
5.4 Network node . 13
5.5 NFVI Node . 14
6 Physical components . 14
6.1 Commercial products . 14
6.2 Racks . 15
6.2.1 Introduction. 15
6.2.2 Relationship of racks to NFVI Nodes . 15
6.2.2.1 Introduction . 15
6.2.2.2 Geographic location . 16
6.2.2.3 1:N NFVI Node to rack mapping . 16
6.2.2.4 N:1 NFVI Node to rack mapping . 17
6.2.2.5 N:M NFVI Node to rack mapping . 17
6.2.3 Industry equipment practices . 18
6.2.3.1 Mechanical dimensions . 18
6.2.3.2 Weight considerations . 18
6.2.3.3 Safety considerations . 18
6.2.3.4 Electromagnetic interference considerations . 19
6.2.4 Installation of compute/network/storage nodes . 19
6.2.5 Rack-level management considerations . 19
6.2.6 Volumetric efficiency considerations . 19
6.2.7 Open Compute example . 20
6.2.8 Recommendations . 21
6.3 Processors . 22
6.3.1 Introduction. 22
6.3.2 Instruction set . 22
ETSI

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6.3.3 Multi-core support . 22
6.3.4 Operating system & hypervisor (virtualisation) support . 22
6.3.5 Registers, cache & memory architecture . 23
6.3.6 Processor recommendations. 23
6.4 Power . 24
6.4.1 Introduction. 24
6.4.2 Typical elements of power distribution . 24
6.4.2.1 Introduction . 24
6.4.2.2 Facility power . 24
6.4.2.2.1 Contex . 24
6.4.2.2.2 -48 VDC power . 24
6.4.2.2.3 AC power . 25
6.4.2.2.4 High voltage DC power . 25
6.4.2.3 Voltage conversion. 25
6.4.2.4 Backup power . 25
6.4.2.5 In-rack power distribution . 26
6.4.3 Power redundancy models . 26
6.4.3.1 Redundant rack feeds . 26
6.4.3.2 Redundant rack power conversion . 26
6.4.3.3 Redundant rack power distribution . 26
6.4.3.4 Redundant compute/storage/network node power . 26
6.4.4 Power safety considerations . 26
6.4.5 Power efficiency . 27
6.4.5.1 Introduction . 27
6.4.5.2 Power conversion . 27
6.4.5.3 Compute, storage and networking Efficiency . 27
6.4.5.4 Power management . 27
6.4.5.5 Redundancy models . 27
6.4.6 Example from the Open Compute Project Open Rack . 27
6.4.7 Power Recommendations . 27
6.5 Interconnections . 28
6.5.1 Ethernet . 28
6.5.2 Intra domain (between compute, storage and network domains) . 29
6.5.3 Intra NFVI Node . 30
6.5.4 Inter NFVI Node . 32
6.5.5 Other types of interconnections . 33
6.5.6 Recommendations . 33
6.6 Cooling . 33
6.6.1 Introduction. 33
6.6.2 Typical elements of cooling . 33
6.6.2.1 Facility and environmental . 33
6.6.2.2 Rack cooling . 34
6.6.2.3 Chip cooling . 34
6.6.2.4 Liquid cooling . 34
6.6.2.5 Air filters . 34
6.6.3 Cooling reliability . 35
6.6.3.1 Introduction . 35
6.6.3.2 Cooling zones . 35
6.6.3.3 Fan redundancy . 35
6.6.3.4 Fan replacement . 35
6.6.4 Cooling safety considerations . 35
6.6.5 Cooling efficiency . 35
6.6.6 Example from Open Compute Project . 36
6.6.7 Cooling recommendations . 36
6.7 Hardware platform management . 36
6.7.1 Introduction. 36
6.7.2 Typical hardware elements managed via software API . 37
6.7.2.1 Environmental sensors and controls . 37
6.7.2.2 Boot/Power. 37
6.7.2.3 Cooling/Fans . 37
6.7.2.4 Network status . 37
6.7.2.5 Inventory data repository . 37
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6.7.2.6 Firmware upgrade . 37
6.7.2.7 Event logging and diagnostics. 37
6.7.2.8 Alarm management . 37
6.7.3 Hardware platform management features . 38
6.7.3.1 General . 38
6.7.3.2 System management. 38
6.7.3.3 Node management . 38
6.7.3.4 Power and fan management . 38
6.7.3.5 Network management interface . 38
6.7.3.6 Payload management interface . 39
6.7.3.6.1 Introduction . 39
6.7.3.6.2 Compute payload management interface . 39
6.7.3.6.3 Storage payload management interface . 39
6.7.4 Recommendations . 39
7 NFVI Node examples . 40
7.1 Introduction . 40
7.2 Virtual mobile network . 40
7.3 Access node . 41
7.4 Transport node . 42
7.5 Customer Premises Equipment . 43
Annex A (informative): Bibliography . 45
Annex B (informative): Authors & Contributors . 46
History . 47


ETSI

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Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Group Specification (GS) has been produced by ETSI Industry Specification Group (ISG) Network Functions
Virtualisation (NFV).
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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7 ETSI GS NFV-EVE 003 V1.1.1 (2016-01)
1 Scope
The present document provides guidelines for NFVI Node physical architecture. It is limited to the hardware resources -
compute, storage, and network - needed to construct and support the functions of an NFVI Node. This includes physical
components needed to house and interconnect nodes.
The present document also provides some examples on "building" specific NVFI Node configurations and
addresses related issues such as reliability and energy efficiency.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
Not applicable.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI GS NFV-INF 001 (V1.1.1): "Network Functions Virtualisation (NFV); Infrastructure
Overview".
[i.2] IEEE 802.3ae™ Standard for Information technology: "Telecommunications and information
exchange between systems - Local and metropolitan area networks, - Specific requirements Part 3:
Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical
Layer Specifications, Amendment 1: Media Access Control (MAC) Parameters, Physical Layers,
and Management Parameters for 10 Gb/s Operation".
[i.3] Introducing data centre fabric, the next-generation Facebook™ data center network.
NOTE: Available at https://code.facebook.com/posts/360346274145943/introducing-data-center-fabric-the-next-
generation-facebook-data-center-network/.
[i.4] ETSI EN 300 019-1-3: "Environmental Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment; Part 1-3: Classification of environmental
conditions; Stationary use at weatherprotected locations".
[i.5] ETSI EN 300 753: "Environmental Engineering (EE); Acoustic noise emitted by
telecommunications equipment".
[i.6] NEBS GR-63: "NEBS Requirements: Physical Protection".
ETSI

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[i.7] ASHRAE: "Thermal Guidelines for Data Processing Environ
...