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Virtualization and cloud will drive the future of Data Center networking
Phil Sayer
Principal Analyst
Forrester Research
October 5, 2009
2 Entire contents © 2008 Forrester Research, Inc. All rights reserved.
Four questions all CIOs are asking
What is the impact of cloud? Should we build a new Data Center or just buy cloud services?
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What about storage? When should we go for new architectures like FCoE?2
What Data Center architecture do we need to support server virtualization?
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How can we introduce a second switch vendor into our Data Center? What are the benefits and risks?
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Slide 2
t2 This slide should appear right after the title slide.tpohlmann, 06/04/2009
3 Entire contents © 2008 Forrester Research, Inc. All rights reserved.
Agenda
• Server virtualization: first steps to a virtual DC?
• Storage: is Fibre Channel history?
• Cloud computing is the future of IT
• Introducing a second switch vendor into the DC
• Recommendations
4 Entire contents © 2008 Forrester Research, Inc. All rights reserved.
Firms plan to virtualize over half their servers by 2010
Source: Enterprise And SMB Hardware Survey, North America And Europe, Q3 2008
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Server virtualization promises much more than just cost saving
• Server virtualization provides the basis for high availability, scalability and manageability, plus:
– Application portability
– Shared DR infrastructure
• Automated management enhances the picture
– Fast provisioning
– Image synchronization between locations
– Recovery orchestration
– Visibility across multiple server and storage systems
6 Entire contents © 2008 Forrester Research, Inc. All rights reserved.
The future of storage: will you really need a SAN?
December 2008 “Do You Really Need A SAN Anymore?”
Leverage Ethernet-based storage for greater savings
• NAS delivers many of the same values as FC SAN
• iSCSI is mature and is available now
• FCoE will reduce the cost of accessing existing FC SANs, but CEE standards are not quite there yet
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FCoE will reduce the cost of accessing FC SANs…
LAN SAN BSAN A
Today
Ethernet FC
Ethernet FCFC
I/O Consolidation with FCoE
LAN SAN BSAN A
Ethernet FC
Enhanced Ethernet and FCoE
8 Entire contents © 2008 Forrester Research, Inc. All rights reserved.
… but FCoE is really a step towards Converged Enhanced Ethernet (CEE)
• Fibre Channel was designed to solve Ethernet performance problems eg dropped packets
• Lossless 10G switches (CEE) fix the problem – the standards are supported by Brocade, EMC, NetApp, Emulex, Fujitsu, IBM, Intel, Juniper, Sun, Cisco and Force10 to replace FC and Infiniband
• Ethernet will be the single, unified interconnect fabric for the data center due to its ubiquity, familiarity, cost and performance
• 10Gbps now, increasing soon to 40G and eventually to 100Gbps.
9 Entire contents © 2008 Forrester Research, Inc. All rights reserved.
Lossless Ethernet will also simplify DC topology!
Three layer DC architecture
Switch fabric
Single layer switch architecture
• Single layer switches will reduce cost, latency, and power (spanning tree is not needed)
• Non-blocking design improves core capacity scalability
• Virtual servers and storage can be located anywhere in the data center (or outside!) for total flexibility
• The entire data center can be built on a single virtual switch
10 Entire contents © 2008 Forrester Research, Inc. All rights reserved.
Cloud computing platforms build off server virtualization
Self-service portal
Source: March 7, 2008, “Is Cloud Computing Ready For The Enterprise?”
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Existing definition: cloud computing
> A standardized IT capability (services, software, or infrastructure) delivered via the Internet in a pay-per-use and self-service way
> An internal cloud is a multitenant, dynamically provisioned and optimized infrastructure with self-service deployment, hosted within your own data center.
> A hosted cloud is a multitenant cloud infrastructure built on top of rented resources in a hosting center, but walled off and dedicated to a single client
New definitions: internal cloud and hosted cloud
12 Entire contents © 2008 Forrester Research, Inc. All rights reserved.
Virtual private cloud
Lots of hardware and plumbing today
IT TODAY
The future of IT is a combination of internal, hosted, and public clouds – a virtual private cloud
Publiccloud
Internal cloud
> Virtual private cloud technology defines the network security boundaries for services and the locations where elements of these services can be placed.
Hostedcloud
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Introducing a second vendor into the DC…
Why? Either to change vendors entirely or as part of a dual sourcing strategy
• Avoid vendor lock-in
• Deploy the best technology for each application
• Improve your negotiating position with each vendor
• Start by eliminating non-proprietary networking standards
• Phase the migration, either by layers, segments. Or both
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…the benefits outweigh the potential risks
• Multi-vendor network management tools are mature
• Interoperability is not a problem – use standard networking protocols
• Build, configure, and fault location procedures should always be based on best practice anyway
• Support and escalation processes can be standardized
• Training costs will be higher – but overall TCO is generally lower
15 Entire contents © 2008 Forrester Research, Inc. All rights reserved.
If you remember nothing else . . .
Virtualization and NAS require a non-blocking, low latency, loss-less, scalable switch architecture. This makes it a good time to review your vendor strategy
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Use cloud techniques to deliver an internal self-service environment as part of a virtual private cloud2
Use virtualization as the start of a strategic overhaul not simply for hardware consolidation. It should be at the heart of your DC strategy including DR
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Slide 15
t3 This should appear second-to-last -- not counting the traditional 'thank you' slide -- right before the recommendations slide which will e replaced bythe next slide.tpohlmann, 06/04/2009
16 Entire contents © 2008 Forrester Research, Inc. All rights reserved.
Thank you
Phil Sayer
+44 (0) 20 7323 7637
www.forrester.com