講演者 : 渡邊 仁 氏 株式会社NTTデータ 技術革新統括本部 システム技術本部 デジタルテクノロジ推進室 12月17日 Hyperledger Tokyo Meetup ー Let's Celebrate 5 Years of Hyperledger with Brian Behlendorf! で講演

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Challenges of applying Blockchain
to enterprise systems in NTTDATA
Dec. 17, 2020
Jin Watanabe
NTT DATA Blockchain CoE, System Engineering HQ.

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NTT DATA Blockchain

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NTT DATA at a glance
NTT DATA
50+
Countries
133,000+
Employees
Worldwide
30+
Years
inheritance
■Name:
NTT DATA Corporation
■Head Office:
Koto-ku, Tokyo, Japan
■Business Areas:
• IT Service provider/System integration
• Networking system services
• Other business activities related to the above

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NTT DATA Blockchain CoE
25 countries & 500 + members in Blockchain Center of Excellence
Unity in
Diversity

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Blockchain Technology NTT DATA focus on
A
B
C
Deep evaluation and deep use
case collection
(4 Technologies)
Simple evaluation and use cases
collection
(10 Technologies)
Gather information
(50 + Technologies)
NTT DATA is using multiple Blockchain technologies
Permitted/Private
Permission-less
Bitcoin
Ethereum
Hyperledger
Fabric
Hyperledger
Sawtooth
Corda Quorum
Others ...

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Representative projects
Reduce business operating costs Create new values
TradeWaltz
Trade platform
Spunta
Interbank reconciliation
Traceability
ALASTRIA
LACChain
Latin America
Food Charity
Digital Economy
Production Level
Production Level
... ...
Digital Economy

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Blockchain to enterprise systems
in NTTDATA

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Commercialization Challenge 1: Blockchain and Data Management
We have focused on the challenges of data management.
Access Control
Data disclosure
only between specific members
Bulk Data Storage
Save
a number of documents
Data Owner
Update
the document owner

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NTT DATA BlockTrace™ DMP
Data Management Platform Supporting Information Linkage
through Block Chains
制御ミドル
User
Application
User
BlockTrace™ DMP
Write Data
Write Only Meta Data
Controller
Distributed
File Storage
Blockchain
Feature. 2
Provides per-user access
control to data Feature. 1
Enable management of
large amounts of data
Mainly tuned to
HL Fabric v2.x
IPFS

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Commercialization Challenge 2: System Lifecycle
Focus on long-term platform challenges
Availability
High Latency
Network
Operation and
monitoring
Execution
environment
constraint exclusion
Improvement through technology evaluation and development

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Between PoC and Production
What we can to maximize the value ?
PoC Production
(This presentation focus on Infra Layer)
“Proof of Concept” “Value Production”
To maximize the value, what we can?

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Non-Functional Requirements Grades
Focus on Operation / maintenance ability
Production
Availability
Scalability
Security
Operation ability
…
[*] IPA システム構築の上流工程強化（非機能要求グレード）
https://www.ipa.go.jp/sec/softwareengineering/std/ent03-b.html
Of course, all of them are important, but
I focus on Operation ability in this session.
To maximize the value, what we can in infra layer?
At the viewpoint of Non-Functional Requirements Grades [*] ,

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“Operation ability” means…
Ability to keep the system green
2 main theme: daily operation and support
Daily Operation
Support
Operation ability
…
• Monitoring/Logging
• Backup
• Incident Handling
• Trouble Shooting

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Daily Operation Cases 1
Virus Monitoring
Monitoring/Logging checkpoint
• After product upgrade, log pattern maybe changed. Check logs and apply to log
collection (not only blockchain product) .
• In some PJ, Job scheduler agent will be installed to daily backup and so on.
• Check the port not to conflict blockchain system.
• (as point of network conflict, be care of customer IP address policy to avoid
confliction to existing systems)
• Some customer security policy requires to install anti-virus agent to all node,
including Orderer/Peer.
• Check files to Read/Write performance under anti-virus agent
(some files/directories should be excluded from scanning)
Log pattern
Job scheduler
Daily Operation

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Daily Operation Cases 2
Backup checkpoint
• System will not be destroyed as intended.
• In some PJ, Orderer has crashed after restore using AWS-EC2 snapshot
(Raft index collapsed). We make and add a new Orderer in the PJ.
• Make recovery manuals in multiple ways.
• Backup data is waste if there is no recovery means.
• New OSS (not only blockchain product) will content bugs/unintended
behavior. So, it is important to make some means.
Restore pattern
Daily Operation

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Support Cases
Incident Handling / Trouble Shooting checkpoint
• We make “Reference Architecture” using k8s.
• But some business unit has no resources to educate/collect member who has k8s
skills.
• We customized not to use k8s.
Maintenance-easy Architecture
Support
Open-source support
• Some new OSS will be not
supported by
• Some business unit has no
resources to keep skillful OSS
engineers (such as code reading
ability for urgent trouble shooting).
• Blockchain CoE is a pool of them.

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Further Challenges
Connecting multiple companies and organizations
based on actual business
Laws and Rules
Legal compliance in one or more countries
International rulemaking and standardization
Protocol
Specified data format and communication method
by associations and consortiums
Business Applications How to Connect with the existing applications
Apply to enterprise How to incorporate into existing business flows

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Our Challenge
Rebuilding the business ecosystem

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The company name, product name, or service name described in this document
are trademarks or registered trademarks of their respective companies.
Congratulations 5 Years of Hyperledger !