In part 2 of the materials from the June 25 AWS RoadShow in Cambridge Haven Power Business Systems Manager, Paul Armstrong, discusses how Haven Power provides IT disaster recovery with AWS and how they are adopting AWS as a platform for tier 1 applications such as billing.

1. Haven Power & AWS
Paul Armstrong
Business Systems Manager

2. Haven Power Presentation | 19/06/2014 2
Haven Power
• Electricity Supplier to serve small to medium sized business customers
and large Industrial & Commercial customers
• Launched in 2006, now employing 350 staff with a turnover in excess of
£250 million
The initial problem:
• The IT estate has grown rapidly with the business, with the technology
infrastructure struggling to keep up with demand
• Mixed virtualisation and a combination of on-site, off-site servers
• Technology working in a reactive basis to support growth

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Requirements
• Provision of a solution quickly, to provide more robust disaster
recovery.
• Flexibility to change as the onsite solutions / change programme
developed and advanced.
• To provide a supporting solution for the entire Business
Continuity Plan – not just IT Disaster recovery.
• Low entry cost and flexibility to evolve the solution over time.

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Tender Process
• In-House
• Off-Site Hardware
• Cloud Based
Solution
Tender DR BAU Production
2011 2012 2013
Core Design Data Backup
Services Replication
DEV/Test Services
Refine
Capacity planning
Compute power utilisation
Storage and network usage costs
and optimisation
Training
Continuous Development
Virtual Machine export processes
Why IaaS and AWS?
Flexible Solution
Willingness of AWS to work closely as a partner, both directly
and through a local partner – Smart421
Rapid time to Live
Manage Cost Profile.
2014
Extend Virtual Networks
Transfer Core Billing and
Registration System
Future planning Data
Warehouse and MI projects

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What has changed over 3.5 years ?
The solution has had to support:
• Internal rationalisation, consolidation and virtualisation of platforms
• Opening of a new office wing, closing of temporary office location and relocation of
200 people
• A significant change programme introducing a new billing and registration platform
• Significant growth of the business and critical dependency on IT
• Existing Production Hardware coming to end of life

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Lessons to Share
• Continuous training – with attrition rates and continuous development, training and
education is essential. (Skills are in demand)
• Architecture Definitions for capacity planning regularly include costs models for
annual operating (hours run per day) and storage costs.
• As current infrastructure comes to end of life, reviewing options for hardware refresh /
transition to the cloud. Cost model becoming harder to ignore as the business has
grown.
• Continuous Improvement - working with suppliers to ensure they support our
infrastructure and application needs moving forward.