Wide Area Data Services WDS PRESENTED TO THE SUSSEX BRANCH OF THE BRITISH COMPUTER SOCIETY 1 6 TH. A P R I L 2 0 0 8 Shaun Elliott – kisdata limited Agenda Overview of Kisdata Ltd Wide Area Data Services – what it consists of and why it is important to you Questions (and hopefully answers!) About Kisdata 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. Wide Area Data Services What it is and why it is important to you The challenges that distributed enterprises face today PRODUCTIVITY COST SAVINGS DATA SECURITY 5 The CIO’s dilemma: Business performance or more control? 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 Increasing control of data Data Protection – WAN backup and DR Security – SSL encryption Consolidation – eases cost and management 6 WDS Optimisation Trends WDS Optimisation Distributed computing problems are converging • Networking problems Need “more bandwidth” Latency is a secret throughput killer Tape Important applications not prioritised Storage Tape Filers Backup Backup WAN BRANCH OFFICE DATA CENTER File Servers Mail Servers Filers Mail File Web Servers Servers Servers • Storage problems • Application problems Data sprawl Web, e-mail, FTP, Notes, ERP, Islands of storage database, etc… Backup & replication Slow response times Compliance worries Apps often not used…too slow 11 The three root causes of poor wide-area application performance Not enough bandwidth Transport protocol chattiness Application protocol inefficiencies If you don’t solve all three, users won’t see performance benefits. 12 WDS needs to address all key performance issues Root Technology Cause Solution Bandwidth Data • Reduce bandwidth needs Limitations Streamlining • Prioritises applications’ bandwidth use Transport Transport • Reduce TCP chattiness and latency Chattiness and Streamlining Latency • Accelerates SSL encrypted traffic Application Application • Reduce application chattiness and latency Chattiness and Streamlining Latency Management • Enables transparent deployment and Streamlining central management of WDS appliances 13 Latency and Chattiness: Root Causes of Poor Performance More Than a Bandwidth Problem Latency Time required to traverse the network WAN DATA CENTER BRANCH OFFICE Chattiness Interactions required to complete an operation or data transfer WAN DATA CENTER BRANCH OFFICE 14 Wide-area Data Services (WDS) is an integrated approach Networking Applications Overcome bandwidth LAN-like WAN and latency constraints performance Storage Consolidate and simplify 15 The WDS underlying framework Initiate new TCP Maintain TCP sessions Maintain TCP sessions sessions WAN DATA CENTER BRANCH OFFICE 1. Accelerate the applications that are 2. Make it simple to deploy and manage most important to your business • Transparent deployment • Accelerate all TCP-based applications • Auto-discovery, auto-interception • Prioritize all applications • No changes to clients, servers, or applications • Orders of magnitude improvements • No tunnels • Robust central management 16 Data Streamlining provides multiple bandwidth optimisations • Eliminate redundant data on the WAN Data Reduction • 60 – 95% reduction in bandwidth utilisation • LZ-Compression for “new” data segments Compression • Useful for data transferred on first pass • (Optional) Prioritize data on bandwidth and latency QoS • Compatible with existing QoS implementations 17 Application streamlining overcomes application protocol limitations Typical application inefficiency Open FID WAN Read 1 Read 2 DATA CENTER BRANCH OFFICE 18 Application streamlining overcomes application protocol limitations Request Optimized WAN Transfer WAN DATA BRANCH CENTER OFFICE Appliance completes Appliance completes transaction locally transaction locally The net effect is 65-98% reduction in WAN round trips 19 Application streamlining overcomes application limitations CIFS • Windows File Sharing & Windows-based applications NFS • Unix File Sharing & Unix-based applications MAPI • Microsoft Exchange HTTP • Web-based applications HTTPS • Secure Web applications MS-SQL • Database driven applications BACKUP & REPLICATION • Simplified replication of remote servers PROXY FILE SERVICE • Disconnected operations & integrated file sharing 20 Transport streamlining overcomes TCP limitations The net effect is a 60-98% reduction in round trips WAN DATA BRANCH CENTER OFFICE Make TCP payload bigger 16KB to 100KB+ Repack payload with references References Data New data From 100KB+ to Virtual 1MB+ 21 Transport streamlining provides many more TCP optimisations • Supports end-to-end acceleration of secure traffic SSL Acceleration • Maintains the preferred trust model Advanced TCP Acceleration • “Fill the pipe” for OC12 and larger connections • Works with clean or lossy links (HS-TCP and MX-TCP) • Eliminate 50% of overhead for small, short-lived Connection pooling connections Adaptive congestion • Adapt transfer parameters based on network windows characteristics Limited and fast • Ensure priority handling for packet resends retransmits 22 MX-TCP: Making WAN-based backup, replication, and transfers even faster MX-TCP High-Speed TCP Regular TCP Bandwidth / Throughput Time HS-TCP MX-TCP • High-Speed TCP avoids slow start, but will • Uses 100% of its allocated bandwidth with still back off in congestion no slowdown due to loss • Applies to all optimized traffic • Granular control: Enabled per QoS class • HS-TCP available on some WDS • Uses QoS per class bandwidth limits to set appliances sending rate Works well for lossy environments and satellite WANs too WDS approach accelerates all TCP applications – what to look for 24 WDS appliances should be designed for easy network integration • Wide range of models for data centers down to small offices Scalability • Up to 1,000,000 concurrent connections • Up to 4Gbps optimized bandwidth • Numerous 10/100/1000 in-path interfaces Deployment Flexibility • TCP connection forwarding • Diverse in-path and out-of-path deployment options • Serial clustering Software-based • Parallel clustering Redundancy • Hot backups • Fail-to-wire Ethernet cards Hardware-based • Multiple power supplies Redundancy • RAID Secure application acceleration that maintains the preferred trust model Optimized WAN transfer over SSL Request BRANCH OFFICE WAN DATA CENTER Secured connection Temporary Session Key SSL session setup 1. SSL Certificates and private keys copied to server-side appliance (no certificate faking in branch offices) Legend 2. Appliances use their own identity certificates to establish a secure connection (proactive or on-demand) SSL Certificate 3. On secure data request, client handshake with server is intercepted by server-side Appliance. Server-side Appliance SSL connection Temporary with origin server. Session Key 4. Server-side Appliance establishes SSL connection with client. Secured connection 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 26 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 DATA BRANCH CENTER OFFICE 27 WDS vs. application front end (AFE) devices Web only Single sided (no advanced data reduction) Web Server Allows internet & branch connections Web BRANCH OFFICE WAN DATA CENTER Application Front End (AFE) HTTPS INTERNET USER Backup File, Email, Filer, Web, SMS, etc… Web Files WAN Email DB BRANCH OFFICE DATA CENTER Accelerate all applications Custom Apps WDS Data reduction TCP optimization Application layer optimization 60 – 95% bandwidth savings QoS 28 Making the business case for WDS in your company Payback Period “66% reduction in Exchange servers & the Infrastructure Cost Savings 4 Months associated cost.” – Greenhill Investments “All our architects – around the world – work Accelerated Business 1 Month as if they were in the same office.” Processes – Gensler Architecture “$500,000 in MONTHLY bandwidth savings. A payback period of 5 months, even 5 Months Bandwidth Savings before we factor in productivity gains.” – LG Electronics “Our WAN backup windows went from 4 hours 6 Months More Secure Data to 5 minutes. Protecting a day’s data is worth $200,000 to us.” – Little Diversified Consulting 29 Gartner Magic Quadrant – WAN Optimisation Controllers Challengers Leaders Riverbed Juniper Networks Ability to execute Packeteer Expand Networks Cisco Systems F5 Networks Streamcore Systems Blue Coat systems Ipanema Technologies Citrix Converged Access Silver Peak Systems Intelligent Compression Technologies Certeon Stampede Technologies Exinda Networks Niche Players Visionaries Completeness of vision Source: Gartner September 2006 In summary, WDS Appliances will accelerate your business Accelerates all key applications by up to 100x over the WAN WAN Reduces bandwidth utilization by 60% to 95% Enables successful IT consolidation Tens of thousands of appliances in production 31 Questions?