WAN Application Infrastructure Fueling Storage Networks
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1 WAN Application Infrastructure Fueling Storage Networks Andrea Chiaffitelli, AT&T Ian Perez-Ponce, Cisco
2 SNIA Legal Notice The material contained in this tutorial is copyrighted by the SNIA. Member companies and individuals may use this material in presentations and literature under the following conditions: Any slide or slides used must be reproduced without modification The SNIA must be acknowledged as source of any material used in the body of any document containing material from these presentations. This presentation is a project of the SNIA Education Committee Storage Networking Industry Association. All Rights Reserved. 2
3 Abstract WAN Application Infrastructures Fueling Storage Networks In recent years, Enterprise I/T organizations have experienced rapid proliferation of WAN-enabled application delivery services targeted at branch server/storage consolidation and acceleration of application distribution across [global] decentralized business infrastructures. As this growing trend continues, this session aims to provide an understanding of how deployment of these WAN-enabled application delivery technologies and the inherent shift of business essential data from edge-to-core expands the role and function of business continuity and disaster recovery practices across the connected Enterprise. Additionally, this session will also introduce advanced concepts of how many IP-based storage applications which enable business continuity and disaster recovery services may also be subject to application optimization and enhancement via advanced policy control systems in the network Storage Networking Industry Association. All Rights Reserved. 3
4 Agenda WAN Anatomy & Today s Application Environments WAN-enabled Application Delivery Services Technology concepts overview Impacts & implications to Enterprise info-structures consisting of large investments in SAN/Storage Scaling Business Continuity & Disaster Recovery Services for WAN-enabled Application Delivery Services -Based WAN Application Infrastructure Integration strategies for intelligent policy-aware networks and storage networks Summary 2007 Storage Networking Industry Association. All Rights Reserved. 4
5 WAN Anatomy: Inside the Pipe Scarce bandwidth resources rarely aligned with changing business priorities and demand Under heavy loads, critical applications and network services suffer 2007 Storage Networking Industry Association. All Rights Reserved. 5
6 What Is Needed? Increased Service Delivery Flexibility Empower enterprise I/T administrators to control end-user application experiences by defining user roles and rights with associated class of service (CoS) assignments and proactive SLA management Create an intelligent network that proactively response to network, application and storage events Corrective actions taken when necessary to fulfill SLA-type contractual obligations Simplified End-User Experience Automated enforcement of pre-defined business policies ensure seamless experience that delivery on contractual service guarantees Customer policies easily and dynamically communicated (portal) Assured Application Performance on the Network Enables enterprises to map applications into defined service classes and storage Allows mission-critical applications to directly trigger real-time reallocation of storage network resources to support guaranteed delivery regardless of network traffic conditions Business Demand Driver Services Business level policies define network actions enabling enterprises to align services with business goals 2007 Storage Networking Industry Association. All Rights Reserved. 6
7 Key Application & Infrastructure Costs Application Performance: WAN bandwidth constraints Network and application latency Global collaboration Branch Infrastructure Cost: Server and storage management Limited IT resources and budget WAN link costs Data protection costs Existing Network Demands: VoIP, video, content, client-server, etc Corporate communications E-Learning 2007 Storage Networking Industry Association. All Rights Reserved. 7
8 Typical Distributed Enterprise Expensive distributed I/T infrastructure: File and print servers servers Tape backup Licensing Application delivery woes: Congested WAN Bandwidth and latency Poor productivity Data Protection Risks: Failing backups Costly off-site vaulting Regulatory Compliance BRANCH OFFICE BRANCH OFFICE WAN BRANCH OFFICE DATA CENTER 2007 Storage Networking Industry Association. All Rights Reserved. 8
9 The WAN Is A Barrier To Consolidation Applications are designed for LAN environments: High bandwidth Low latency Round Trip Time (RTT) ~ 0mS Client LAN Switch Server Reliability WAN characteristics hinder consolidation: Already congested Round Trip Time (RTT) ~ many milliseconds Low bandwidth Latency Client LAN Switch Routed Network LAN Switch Server Packet Loss 2007 Storage Networking Industry Association. All Rights Reserved. 9
10 Latency Attributes Latency impairs application performance in three ways: Network latency: The amount of time necessary for a message to traverse the network Transport latency: The amount of time necessary for the transport mechanism (TCP) to acknowledge and retransmit data Application latency: The chattiness of an application protocol that causes messages to be exchanged across the network Round Trip Time (RTT) ~ many milliseconds 2007 Storage Networking Industry Association. All Rights Reserved. 10
11 Bandwidth Limitations Bandwidth constraints keep applications from performing well Too much data and too small a pipe causes congestion, packet loss, and backpressure Applications & User Experience Degraded! 2007 Storage Networking Industry Association. All Rights Reserved. 11
12 Addressing The WAN Challenge Source Need Technology Latency Bandwidth Utilization Transport Throughput Network Integration Administrative Traffic Reduced number of network roundtrips caused by chatty application protocols Improved application response time on congested links by reducing the amount of data sent across the WAN Improved network throughput (total amount of data) by improving transport behavior Physical integration into existing network platforms Compliance with network functions Replacement for services that branch office servers provide Intelligent protocol proxies Application caching Compression TCP optimizations Adaptive congestion mgmt. Router modules, linecards Feature interoperability Centrally managed remote services interface 2007 Storage Networking Industry Association. All Rights Reserved. 12
13 Overcoming WAN Barriers to Application Consolidation WAN-enabled Application Delivery Services is a solution that leverages an intermix of hardware-enabled protocol optimization, caching and compression features between remote branch office and the data center to overcome application performance problems in WAN environments and consolidate data. BRANCH OFFICE DATA CENTER BRANCH OFFICE WAN Optimized Optimized 2007 Storage Networking Industry Association. All Rights Reserved. 13
14 WAN-enabled Application Delivery Services Benefits Technology implementations provide: Transparent integration Robust optimizations Auto discovery -Based configuration Consolidation benefits include: Remove costly servers Centralize data protection Save WAN resources Improvements include: Application acceleration WAN optimization Local infrastructure services BRANCH OFFICE BRANCH OFFICE WAN BRANCH OFFICE DATA CENTER 2007 Storage Networking Industry Association. All Rights Reserved. 14
15 Accelerates Broad Range of Applications Application Application Protocol Improvement File Sharing Internet / Intranet Data Transfer Software Distribution Database Applications Data Protection Windows (CIFS) UNIX (NFS) Exchange (MAPI) SMTP/POP3, IMAP Notes HTTP, HTTPS, WebDAV FTP SMS (CIFS, HTTP) Altiris (HTTP) SQL Oracle Notes Backup Applications Replication Applications 2X-400X 2X-50X 2X-50X 2X-50X 2X-100X 2X-10X 2X-50X Ensures LAN-like performance for branch-based access of corporate applications Enables branch server and storage consolidation without affecting workflow and employee productivity Simple network integration enables lower TCO Other Any TCP-based Application 2X-10X * Performance improvement varies based on user workload, compressibility of data, WAN characteristics and utilization. Actual numbers are case-specific and results may vary Storage Networking Industry Association. All Rights Reserved. 15
16 WAN Application Infrastructure & Storage Network Integration Relocation of business essential data from edge-to-core is a biproduct of WAN application infrastructure that creates opportunities for: Scaling existing datacenter storage networking footprints (NAS & SAN) to support increases in data volume Creating new service tiers that pertain to globally distributed applications versus local applications Increase in centralized command and control (C3) of business essential data for benefits that include data availability for collaboration to data protection for risk mitigation BRANCH OFFICE 2007 Storage Networking Industry Association. All Rights Reserved. 16 Opt BRANCH OFFICE Opt WAN SAN Opt BRANCH OFFICE DATA CENTER
17 WAN Application Infrastructure & BCDR Integration With increases in data volume stemming from applications being deployed across the WAN from central data center facilities, an increase in specialty storage services that support business continuity and disaster recovery practices should also be anticipated To help reduce resource constraints and overhead associated with integrating these globally-deployed applications into a BCDR framework, WAN application infrastructures can provide many of the same benefits for IP-enabled storage applications that they provide for traditional non-storage applications, thereby creating mutual advantages for each service DATA CENTER DR SITE Optimized WAN Optimized SAN Asynchronous Replication Remote Backup/Archiving Continuous Data Protection Tape Vaulting SAN 2007 Storage Networking Industry Association. All Rights Reserved. 17
18 Achieving Integrated Application Service Delivery Acceleration Reduce response times WAN Optimization Minimize bandwidth / latency Wide Area File Services Consolidate file/print/storage Flow Monitoring Reduce network costs QoS QoS configuration IP SLAs End-to-end performance mgmt BRANCH BRANCH OFFICE OFFICE ACLs Auto QoS WAN Optimization DATA DATA CENTER CENTER IP SLA Measurements NetFlow File Cache / Local Print Services Auto QoS WAN Optimization BRANCH BRANCH OFFICE OFFICE NetFlow 2007 Storage Networking Industry Association. All Rights Reserved. 18
19 Framework for -Based Networks Management Resource Management Workflow Access Control Monitoring Utilization Bandwidth Performance Resource Monitoring CoS/QoS Configuration Security Application awareness Optimization Network Infrastructure Common Services Application Awareness Asset Discovery Event Monitoring Optimization 2007 Storage Networking Industry Association. All Rights Reserved. 19
20 Communicate Events & Policies Across Storage Networking Uniform Set of Policies Across WAN Application Infrastructure Intelligent Network Management Definition Resource Management Resource Monitor Workflow Execution Validation Inventory Events occurring in the network trigger execution of rules in real-time resulting in decisions that enforced by dynamically configuring the network for storage service delivery Event types include user actions (portal, logon), storage services, and network conditions (network outage, time-of-day, congestion) Basic Types of Management: Dynamic Network and Hosting Provisioning / Based Network Management Configuring QoS on an aggregation router for video delivery Limiting peer-to-peer traffic Different time-of-day bandwidth and CoS profiles Admission control Traffic based 2007 Storage Networking Industry Association. All Rights Reserved. 20
21 -Based Service Control Scenario 1 User Triggered Enterprise IT 1. Customer makes service changes Self-Service Service Portal 2. Control System checks resources and updates schedules 3. Billing & records updated Billing Usage 4. Control System (PCS) pushes changes to network Network Provisioning Application Optimization Execution Point (PEP) Network Core CPE Edge Access Storage 2007 Storage Networking Industry Association. All Rights Reserved. 21
22 -Based Service Control Scenario 2 Application Triggered Customer Self-Service Service Portal 3. Control System checks policy, resources & pushes changes 5. Billing & usage updated Control System Network Provisioning Billing Usage 2. Application signals Control System for admission control & bandwidth flex 4. Control System responds to application Enterprise User 1. User initiates application session Execution Point Network Core CPE Access Edge Storage 2007 Storage Networking Industry Association. All Rights Reserved. 22
23 -Based Service Control Scenario 3 Application Triggered Exec Pt. detection of over-the-top requests Customer Self-Service Service Portal Billing Usage Enterprise User CPE 1. User initiates application session Access 3. Control System checks resources and pushes changes 4. Usage & potentially billing updated Network Provisioning Edge Control System 2. Execution Point signals detection of over-the-top application Execution Point Network Core 2007 Storage Networking Industry Association. All Rights Reserved. 23
24 -Based Service Control Scenario 4 Application Triggered Exec Pt. detection & control of usage-based service Enterprise IT 1. Customer makes quota changes Customer Self-Service Service Portal 4. Customer notified and billing updated Control System Billing Usage Enterprise User 2. Control System provisions quota at Execution Point 3. Execution Point signals Control System when quota is up Execution Point Network Core CPE Edge Access 2007 Storage Networking Industry Association. All Rights Reserved. 24
25 -Based Service Control Scenario 5 Service Monitoring Enterprise IT 2. Customer makes service changes Customer Self-service Portal 3. Control System checks resources and updates schedules Network Provisioning Billing Usage 4. Service demand & admission history updated Control System 5. Control System pushes changes to network Portal 1. Engineer configures monitoring policy Engineer Execution Point 6. Execution Point reports on usage to collector Network Core CPE Access Edge Storage 2007 Storage Networking Industry Association. All Rights Reserved. 25
26 Implementing the Intelligent Information Network BUSINESS VALUE / MARKET VALUE Networked Infrastructure Virtualization INTEGRATED TRANSPORT Improves IT utilization Improves efficiency of networked assets Increases network availability & security Reduces TCO Networked-Based Common Services Delivery INTEGRATED SERVICES Improves business processes Maximizes resource utilization Increases productivity Increases Quality of Service Application Protocol Optimization INTEGRATED APPLICATIONS Improves application throughput on a given infrastructure Delivers better enduser response times Avoids costly and ineffective technology upgrades Avoids costly application rework Intelligent Information Networks 2007 Storage Networking Industry Association. All Rights Reserved. 26 TIME
27 Summary Application Layer Interactive Services Layer Networked Infrastructure Layer Business Applications Application Networking Services Infrastructure Services Collaboration Applications Adaptive Management Services Server Storage Clients Network New Services Close Resource & Application Gaps Application and Collaboration Integration Gap Requirements: Application integration Human interaction Productivity and innovation Solution Application fluency in the network Real-time interaction and collaboration Resource Allocation Gap Requirements: Flexible, efficient and secure usage of IT resources Solution: Infrastructure virtualization Self-defending networks Integrated manageability Centralized policy control enablement 2007 Storage Networking Industry Association. All Rights Reserved. 27
28 Refer to Other Tutorials Please use this icon for referral to other tutorials where appropriate Check out SNIA Tutorial: Storage Virtualization Please use this icon for referral to demonstrations of the technology in the SNW Interop Lab when appropriate 2007 Storage Networking Industry Association. All Rights Reserved. 28
29 Q&A / Feedback Please send any questions or comments on this presentation to SNIA: trackapplication@snia.org Many thanks to the following individuals for their contributions to this tutorial. SNIA Education Committee Andrea Chiaffitelli, AT&T Ian Perez-Ponce, Cisco 2007 Storage Networking Industry Association. All Rights Reserved. 29
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