bicsi japan 20090904 ries dc
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Cabling technology in data center
an outlook
Stefan RiesVice President Private Networks, Reichle & De Massari
Member/Expert ISO/IEC JTC 1 SC25 WG 3
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Contend
• Current cabling standards for DC
• Future transmission standards
• Cabling planning / implementation
• Cabling in the operation
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Datacenter - Standards US
TIA/EIA 568-B 1 TIA/EIA 569-B TIA/EIA 606-A TIA/EIA-J- 607 TIA/EIA 758-A
TIA/EIA 568-B 2
TIA/EIA 568-B 3
TIA/EIA 942Telecommunication Infrastructure
for Data Center
CablingPathways
and
Spaces
Administration Grounding
and
Bonding
OSP
Cabling
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ISO / IEC 2764 – 2nd FCD1) Draft
Generic cabling systems for Data Centers
Source: ISO/IEC J TC 1/SC 25 N 1643 2nd FCD SIO/IEC 24764:2009-04-211) Under Vote as per 2009-08-22
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ISO / IEC 2764 – 2nd CD Draft
Generic cabling systems for Data Centers
Source: ISO/IEC J TC 1/SC 25 N 1463 2nd CD SIO/IEC 24764:2008-01-08
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Flash light: ISO/IEC 24764
• Functional elements• External network interface ENI
• Main distributor MD• Zone Distributor ZD
• Local distribution point LDP
• Equipment outlet EO
• Limitation to Cat. 6A, Cat. 7 and Cat. 7A in the distribution area
• Performance requirement according ISO / IEC 11801 2nd ed. Adm. 1&21)
• Optical interface (EO) only LC (IEC 61754-20) & MPO (IEC 61754-7)
1) Under Vote as per 2009-08-22Source: ISO/IEC J TC 1/SC 25 N 1643 2nd FCD SIO/IEC 24764:2009-04-21
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Comparison TIA vs. ISO/IEC
TIA cabling ISO/IEC
Dedicated to DC NO YES
Cat. 6A/ Aperformance
Lower Higher
UTP & STP Not really Yes
Approved Yes Vote 2009-08-22
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Standards related to 10GB/s
• IEEE 802.3an
– Standard which defines the 10GbE –Application
– Defines the requirements for the cabling that 10GbE can be implemented
• ISO/IEC 11 801 ed. 2002– Global standard for generic cabling
– Amendment 1 (former 1.1) defines the channel requirement
• Class EA and FA for 10GbE
– Amendment 2 (former 1.2) defines the component values required to reach Class EA and FA
independent from the manufacturer (re embedded)
• ISO/IEC TR 24 750 – EIA/TIA TSB 155
– Technical report for approve existing cabling regarding 10GbE capability
• EIA/TIA 568.xx
– American standard for generic cabling
– Usually faster that ISO/IEC and lower in performance
• EN 50 173-x– European standard for generic cabling
– Usually waiting on ISO/IEC -> no need for harmonisation
– No 10GbE definitions yet
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Standard Overview Aug. 2009
Channel Components
cable connectivity
IEEE 802.3an
(10GbE)
“relaxed NEXT-
slope”
~ 40 DB/Dec
N.C.
EIA/TIA
568B.2-10
Cat. 6A
“relaxed slope”
~ 27 DB/Dec
Cat. 6A Cat. 6A
ISO/IEC11801
Class EA“NEXT not relaxed”
Amendment 1
Cat. 6A
Under definition 1)
Amendment 21) Under Vote as per 2009-08-22
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A or A
• EIA/TIA 568B2-10– Link Cat. 6A; Components Cat. 6A
• ISO/IEC 11801 / EN 50173
– Link Class EA; Components Cat. 6A
• Massive difference in performance
• Often not precise labeled
• Components often wrong labeled
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Standard Overview Aug. 2009
Channel Components
cable connectivity
IEEE 802.3an
(10GbE)
“relaxed NEXT-
slope”
~ 40 DB/Dec
N.C.
EIA/TIA
568B.2-10
Cat. 6A
“relaxed slope”
~ 27 DB/Dec
Cat. 6A Cat. 6A
ISO/IEC11801
Class EA“NEXT not relaxed”
Amendment 1
Cat. 6A
Under definition 1)
Amendment 21) Under Vote as per 2009-08-22
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EIA/TIA Class Cat. 6A (Channel)
EIA/TIA Cat. 6A componentlimits
Components vs. ChannelISO/IEC Class EA
C h a n n e l N E X T P e r f o r m a n
c e
Components vendor A
Components vendor C (Cat 6A)
Components vendor B (Cat 6A)
Components vendor D (Cat 6A)
The components used to build a Class EA
channel according to ISO/IEC, will notnecessarily meet the EIA/TIA Cat. 6A
component standards (even thoughEIA/TIA Cat. 6A components can onlycombine to build a lower performingchannel according to EIA/TIA Cat. 6A!)
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Class EA / Category 6A (Channel) certificate
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Future application standards
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Data center demand
Source: ISO/IEC JTC 1/SC 25/WG 3(Barcelona/Flatman)018-02-08 IEEE 802.3 Project report
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Date rate in the Data center
Source: ISO/IEC JTC 1/SC 25/WG 3(Barcelona/Flatman)018-02-08 IEEE 802.3 Project report
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40/100GB – Ethernet IEEE 802.3ba
Not 40GBase-T
Not 100GBase-T
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IEEE 802.3ba connectivity (Draft 2.0)
40GBASE-CR4
IEC 61076-3-113
100GBASE-CR10
SFF-8642IEC ????
802.3ba is based on 4 resp. 10parallel 10GB/s transmissions
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IEEE 802.3ba (Status Draft 2.0)40GB/s / 100GB/s Ethernet
• IEEE 802.3ba is based on 4 resp. 10 parallel 10GB/s links
– This allows to use of an already known technology
• IEEE 802.3ba do not plan to make use of any Cat. Xx
Technology for copper so far.– There are no plans for an IEEE project for 40GBase-T with Cat. 7A
• For FO 802.3ba refer to OM3 and MPO connectivity
– The current MPO design can’t handle all 100GB/s arrangements
– The use of OM4 is still open
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OM4 fibre
• 802.3ba defines 10 parallel 10GB/s for a distance of 100mwith OM3
• 802.3z defines 10GB/s for a distance of 300m with OM3
• The use of OM4 would enlarge the attenuation budget againstOM3
Source: ISO/IEC J TC 1/SC 25 N 1645 2nd FPDAM SIO/IEC 11801 Adm. 2: 2009-04-21
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Cabling planning / implementation
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The data center thesis's
1. Low density is as important as high density
2. Installation speed and flexibility is core
3. Standardization on the implementation level isimportant
• Modularity
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Density
• A structured cabling of a Data
center require more space than an
unstructured• Patch areas requires
– Space to patch
– Provide overview
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Future Expansion Plans in the Next 5 YearsData Center - U.S. 2007 & U.K. 2008
0 20 40 60 80 100
Expand existing data
center(s)
Outsource more data
center functions
Build a new datacenter
UK US
%
No. Respondents: U.S. 250; U.K.120
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US Market
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Data center activity
• More money is spent in the passive infrastructure
during operation than for to build a data center
– Planning doesn’t stop when the DC is built– There are installation activities in a running DC
– There change the use of the space in a DC
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Installation in a DC
• High reliability and installation quality required
– High success at first try rate
– Easy installation –> low failure
UTP Anteil "Pass" (%)
97.7
78.8
46.9
3.2
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.090.0
100.0
R&M V-4 V-6 V-9
% PASS after installation UTP
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Installation in a DC
• Pre-termination
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FO reliability
Splice: 4 connection
No Epoxy, No Polish: 4 connection, fast connection
Pre termination: 2 connection, fast termination
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Standardization on the implementation
• Planning get less complex
• The effort for migration or resizing decrease
• The handling of multi site installations get lesscomplex
• The standardization of the implementation requires ahigh modularity of the used systems
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Standardization on platform level
• CU and FO in the same
platform deployable• Mix of FO and CU in the
same platform
• Deploy the same linkcomponents in differentplatforms
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Operation
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downtime in data centersApril 2007: 100 Data center with a high Blade-Server density
The human is the biggest problem !
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Protection of the data center “Avoid trouble maker”
• Protection of the cabling from human?
• Avoid mistake of the human in the
cabling
• 80% of the errors can be avoided very
easily
The small thingshave the big effect
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Overview, Overview, Overview“Small things with a big error prevention effect”
• Color keeps the overview
• The code must be applicable
by the operators– Colored patch cords ??
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Think before act“Small things with a big error prevention effect”
Additional step before disengage
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Prevent wrong connection“Small things with a big error prevention effect”
Mechanical coding
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Only if authorized“Small things with a big error prevention effect”
Key look
… also against patch cable thief's
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Don’t ask for the impossible“Small things with a big error prevention effect”
Latch operation with bladeserver deployment
Source: Polywell Computers
Source: unknown
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The importance of the patch cord
• The patch cords are deployed where the signal level
is lowest and the distribution is highest
As higher the data rate
as higher the demand for
the patch cords!
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