1. PRESENTED TO THE SUSSEX BRANCH OF THE BRITISH COMPUTER SOCIETY 16 TH. APRIL 2008 Wide Area Data Services WDS Shaun Elliott – kisdata limited

2. Agenda Overview of Kisdata Ltd Wide Area Data Services – what it consists of and why it is important to you Questions (and hopefully answers!)

3. Kisdata brings together technology and business consulting skills to design and deliver solutions which work in the real world to bring competitive advantage. World class standard accreditations with the world’s major vendors & fully accredited staff, ensure the consistency & quality of our services. We have been awarded ISO 9001/9002 and are committed to delivering a high quality service with integrity. About Kisdata

4. Wide Area Data Services What it is and why it is important to you

5. 5 The challenges that distributed enterprises face today PRODUCTIVITYCOST SAVINGSDATA SECURITY

6. The CIO’s dilemma: Business performance or more control? 6 Increasing control of data  Data Protection – WAN backup and DR  Security – SSL encryption  Consolidation – eases cost and management Increasing distribution of organizations  88% of employees work outside of headquarters  IT must deliver to users guaranteed performance  Branches are expensive and difficult to manage

10. WDS Optimisation Trends WDS Optimisation

11. Distributed computing problems are converging 11 File Servers Mail Servers Web Servers FilersTape Backup Storage WAN File Servers Mail Servers Filers Tape Backup DATA CENTERBRANCH OFFICE Application problems  Web, e-mail, FTP, Notes, ERP, database, etc…  Slow response times  Apps often not used…too slow Storage problems  Data sprawl  Islands of storage  Backup & replication  Compliance worries Networking problems  Need “more bandwidth”  Latency is a secret throughput killer  Important applications not prioritised

12. 12 Application protocol inefficiencies Transport protocol chattiness Not enough bandwidth If you don’t solve all three, users won’t see performance benefits. The three root causes of poor wide-area application performance

13. WDS needs to address all key performance issues 13 Bandwidth Limitations Transport Chattiness and Latency Enables transparent deployment and central management of WDS appliances Reduce bandwidth needs Prioritises applications’ bandwidth use Reduce TCP chattiness and latency Accelerates SSL encrypted traffic Reduce application chattiness and latency Application Chattiness and Latency Root Cause Management Streamlining Data Streamlining Transport Streamlining Application Streamlining Technology Solution

14. Latency and Chattiness: Root Causes of Poor Performance More Than a Bandwidth Problem 14 WAN DATA CENTER BRANCH OFFICE Latency Time required to traverse the network Chattiness Interactions required to complete an operation or data transfer WAN DATA CENTER BRANCH OFFICE

15. Wide-area Data Services (WDS) is an integrated approach 15 Networking Overcome bandwidth and latency constraints Applications LAN-like WAN performance Storage Consolidate and simplify

16. The WDS underlying framework 16 Initiate new TCP sessions 1. Accelerate the applications that are most important to your business Accelerate all TCP-based applications Prioritize all applications Orders of magnitude improvements Maintain TCP sessions WAN DATA CENTERBRANCH OFFICE Maintain TCP sessions 2. Make it simple to deploy and manage Transparent deployment Auto-discovery, auto-interception No changes to clients, servers, or applications No tunnels Robust central management

17. Data Streamlining provides multiple bandwidth optimisations 17 Eliminate redundant data on the WAN 60 – 95% reduction in bandwidth utilisation Data Reduction Compression QoS LZ-Compression for “new” data segments Useful for data transferred on first pass (Optional) Prioritize data on bandwidth and latency Compatible with existing QoS implementations

18. Application streamlining overcomes application protocol limitations 18 Typical application inefficiency Open FID Read 1 Read 2 WAN DATA CENTER BRANCH OFFICE

19. 19 Request Application streamlining overcomes application protocol limitations WAN DATA CENTER BRANCH OFFICE Optimized WAN Transfer The net effect is 65-98% reduction in WAN round trips Appliance completes transaction locally Appliance completes transaction locally

20. Application streamlining overcomes application limitations 20 Windows File Sharing & Windows-based applications Microsoft Exchange Web-based applications Database driven applications Disconnected operations & integrated file sharing CIFS MAPI HTTP MS-SQL BACKUP & REPLICATION PROXY FILE SERVICE Simplified replication of remote servers Unix File Sharing & Unix-based applications NFS Secure Web applications HTTPS

21. 21 WAN Transport streamlining overcomes TCP limitations Make TCP payload bigger 16KB to 100KB+ The net effect is a 60-98% reduction in round trips DATA CENTER BRANCH OFFICE Repack payload with references From 100KB+ to Virtual 1MB+ References New data Data

22. Transport streamlining provides many more TCP optimisations 22 “Fill the pipe” for OC12 and larger connections Works with clean or lossy links (HS-TCP and MX-TCP) Ensure priority handling for packet resends Advanced TCP Acceleration Connection pooling Adaptive congestion windows Limited and fast retransmits Eliminate 50% of overhead for small, short-lived connections Adapt transfer parameters based on network characteristics Supports end-to-end acceleration of secure traffic Maintains the preferred trust model SSL Acceleration

23. MX-TCP: Making WAN-based backup, replication, and transfers even faster Time Bandwidth / Throughput High-Speed TCP Regular TCPMX-TCP HS-TCP High-Speed TCP avoids slow start, but will still back off in congestion Applies to all optimized traffic HS-TCP available on some WDS appliances MX-TCP Uses 100% of its allocated bandwidth with no slowdown due to loss Granular control: Enabled per QoS class Uses QoS per class bandwidth limits to set sending rate Works well for lossy environments and satellite WANs too

24. WDS approach accelerates all TCP applications – what to look for 24

25. WDS appliances should be designed for easy network integration Wide range of models for data centers down to small offices Up to 1,000,000 concurrent connections Up to 4Gbps optimized bandwidth Serial clustering Parallel clustering Hot backups Fail-to-wire Ethernet cards Multiple power supplies RAID Scalability Software-based Redundancy Hardware-based Redundancy Numerous 10/100/1000 in-path interfaces TCP connection forwarding Diverse in-path and out-of-path deployment options Deployment Flexibility

26. 26 Secure application acceleration that maintains the preferred trust model WAN DATA CENTER BRANCH OFFICE 1.SSL Certificates and private keys copied to server-side appliance (no certificate faking in branch offices) 2.Appliances use their own identity certificates to establish a secure connection (proactive or on-demand) 3.On secure data request, client handshake with server is intercepted by server-side Appliance. Server-side Appliance SSL connection with origin server. 4.Server-side Appliance establishes SSL connection with client. 5.Temporary session key is migrated from server-side Appliance to client-side Appliance, moving client’s SSL connection to client-side Appliance. 6.Transfers are accelerated via all OS streamlining mechanisms Request Optimized WAN transfer over SSL SSL session setup Temporary Session Key Secured connection Legend Secured connection Temporary Session Key SSL Certificate

27. 27 Enhanced Auto-Discovery Simplifies deployments for complex environments  Automatically finds and optimizes between most distant Appliance pair  Eliminates the need for manual peering rules  Requires no additional configuration  Supports unlimited Appliances in transit between Client Appliance and Server Appliance Improves performance  finds optimal Appliance pairing for maximum optimization BRANCH OFFICE DATA CENTER

28. WDS vs. application front end (AFE) devices 28 Backup WAN DATA CENTER BRANCH OFFICE Web Files Email DB Custom Apps WDS File, Email, Filer, Web, SMS, etc…  Accelerate all applications  Data reduction  TCP optimization  Application layer optimization  60 – 95% bandwidth savings  QoS DATA CENTER Application Front End (AFE) BRANCH OFFICE Web Server Web  Web only  Single sided (no advanced data reduction)  Allows internet & branch connections WAN INTERNET USER HTTPS

29. 29 Infrastructure Cost Savings Accelerated Business Processes Bandwidth Savings More Secure Data “66% reduction in Exchange servers & the associated cost.” – Greenhill Investments “All our architects – around the world – work as if they were in the same office.” – Gensler Architecture “$500,000 in MONTHLY bandwidth savings. A payback period of 5 months, even before we factor in productivity gains.” – LG Electronics “Our WAN backup windows went from 4 hours to 5 minutes. Protecting a day’s data is worth $200,000 to us.” – Little Diversified Consulting Making the business case for WDS in your company 4 Months Payback Period 1 Month 5 Months 6 Months

30. Niche PlayersVisionaries Ability to execute Completeness of vision Exinda Networks CerteonStampede Technologies Intelligent Compression Technologies Silver Peak Systems Streamcore Systems Ipanema Technologies Converged Access Citrix Blue Coat systems F5 Networks Cisco Systems Packeteer Expand Networks Juniper Networks Riverbed ChallengersLeaders Source: Gartner September 2006 Gartner Magic Quadrant – WAN Optimisation Controllers

31. 31 In summary, WDS Appliances will accelerate your business Reduces bandwidth utilization by 60% to 95% Accelerates all key applications by up to 100x over the WAN WAN Tens of thousands of appliances in production Enables successful IT consolidation

32. Questions?