education wan application infrastructure fueling storage ......ip sla measurements netflow file...

EDUCATION

WAN Application Infrastructure Fueling Storage NetworksAndrea Chiaffitelli, AT&TIan Perez-Ponce, Cisco

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WAN Application Infrastructure Fueling Storage Networks © 2007 Storage Networking Industry Association. All Rights Reserved. 2

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Abstract

WAN Application Infrastructures Fueling Storage NetworksIn 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 anunderstanding 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.

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• 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

• Policy-Based WAN Application Infrastructure– Integration strategies for intelligent policy-aware networks and

storage networks

• Summary

Agenda

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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

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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

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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

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Typical Distributed Enterprise

• Expensive distributed I/T infrastructure:– File and print servers– Email 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

WAN

DATA CENTER

BRANCH OFFICEBRANCH OFFICE

BRANCH OFFICE

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• Applications are designed for LAN environments:– High bandwidth– Low latency– Reliability

• WAN characteristics hinder consolidation:– Already congested– Low bandwidth– Latency– Packet Loss

The WAN Is A Barrier To Consolidation

Round Trip Time (RTT) ~ 0mS

Client

LAN Switch Server

Round Trip Time (RTT) ~ many milliseconds

ServerClientLAN

SwitchLAN

Switch

Routed Network

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• 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

Latency Attributes

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Bandwidth Limitations

• Bandwidth constraints keep applications from performing well

• Too much data and too small a pipe causes congestion, packet loss, and backpressure

Applications Applications & User & User

Experience Experience Degraded!Degraded!

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Source Need Technology

Latency• 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

Administrative Traffic

• Replacement for services that branch office servers provide

• Centrally managed remote services interface

Bandwidth Utilization

• Intelligent protocol proxies

• Application caching• Compression

• TCP optimizations• Adaptive congestion mgmt.

Transport Throughput

Network Integration

• Router modules, linecards• Feature interoperability

Addressing The WAN Challenge

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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.

WAN

DATA CENTERDATA CENTER



OptimizedOptimized

OptimizedOptimized

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• Technology implementations provide:

– Transparent integration– Robust optimizations– Auto discovery– Policy-Based configuration

• Consolidation benefits include:

– Remove costly servers– Centralize data protection– Save WAN resources

• Improvements include:– Application acceleration– WAN optimization– Local infrastructure services

WAN

WAN-enabled Application Delivery Services Benefits

DATA CENTER

BRANCH OFFICE

BRANCH OFFICE

BRANCH OFFICE

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Accelerates Broad Range of Applications

Application Application Protocol Improvement

File Sharing• Windows (CIFS)• UNIX (NFS)• Exchange (MAPI)• SMTP/POP3, IMAP• Notes

• HTTP, HTTPS, WebDAV

• FTP

• SMS (CIFS, HTTP)• Altiris (HTTP)

Database Applications

• SQL• Oracle• Notes

• 2X-10X

Data Protection

• Backup Applications• Replication Applications

• 2X-50X

Other • Any TCP-based Application • 2X-10X

E-mail

• 2X-400X

• 2X-50X

• 2X-50X

• 2X-50X

Internet / IntranetData TransferSoftware Distribution • 2X-100X

• 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

* Performance improvement varies based on user workload, compressibility of data, WAN characteristics and utilization. Actual numbers are case-specific and results may vary.

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WAN Application Infrastructure & Storage Network Integration• Relocation of business essential

data from edge-to-core is a bi-product 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

WAN

DATA CENTER

BRANCH OFFICE

BRANCH OFFICE

BRANCH OFFICE

SAN

OptOpt OptOpt

Opt

Opt

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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

SANSAN

DR SITE

WANOptimizedOptimized OptimizedOptimized

Asynchronous ReplicationAsynchronous ReplicationRemote Backup/ArchivingRemote Backup/Archiving

Continuous Data ProtectionContinuous Data ProtectionTape VaultingTape Vaulting

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WANOptimization

Auto QoS

Auto QoS

WANOptimization

DATA CENTERDATA CENTER

BRANCH OFFICEBRANCH OFFICE BRANCH OFFICEBRANCH OFFICE

IP SLAMeasurements

NetFlow

File Cache / Local PrintServices

NetFlow

ACLs

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

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Asset Asset DiscoveryDiscovery

Event Event MonitoringMonitoring OptimizationOptimization

Policy Policy ManagementManagement

ResourceResourceManagementManagement WorkflowWorkflow

Framework for Policy-Based Networks

NetworkInfrastructure

NetworkNetworkInfrastructureInfrastructure

CommonServicesCommonCommonServicesServices

ApplicationAwarenessApplicationApplicationAwarenessAwareness

•• Access Access ControlControl

•• MonitoringMonitoring•• UtilizationUtilization•• BandwidthBandwidth•• PerformancePerformance

•• ResourceResourceMonitoringMonitoring

•• CoS/QoS CoS/QoS •• ConfigurationConfiguration•• SecuritySecurity

•• ApplicationApplicationawarenessawareness

•• OptimizationOptimization

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WorkflowWorkflow

Resource ManagementResource Management

Communicate Events & Policies Across Storage Networking

• 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 Policy Management:• Dynamic Network and Hosting

Provisioning / Policy 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

Uniform Set of Policies Across WAN Application Infrastructure Uniform Set of Policies Across WAN Application Infrastructure

Policy ManagementPolicy ManagementPolicy

DefinitionPolicy

DefinitionPolicy

ValidationPolicy

Validation

Policy Execution

Policy Execution

ResourceMonitor

ResourceMonitor InventoryInventory

Intelligent Network

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4. Policy Control System (PCS) pushes changes to network

Storage

NetworkCore

EdgeAccessCPE

Network ProvisioningNetwork Provisioning

Application Optimization

Billing Billing UsageUsagePolicyPolicy

SelfSelf--Service Service PortalPortal

Enterprise IT

1. Customer makes service changes

2. Policy Control System checks resources and updates schedules

3. Billing & Policy records updated

Policy Execution

Point (PEP)

Policy-Based Service Control Scenario 1

User TriggeredUser Triggered

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Storage

Network Core

EdgeAccessCPE

Network Provisioning

Policy Execution

Point

Policy Control System


Customer Customer SelfSelf--Service Service

PortalPortal

Enterprise User

1. User initiates application session

2. Application signals Policy Control System for admission control & bandwidth flex

4. Policy Control System responds to application

3. Policy Control System checks policy, resources & pushes changes

5. Billing & usage updated


Application TriggeredApplication Triggered

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NetworkCore

EdgeAccessCPE




PortalPortal

Enterprise User

1. User initiates application session

4. Usage & potentially billing updated

2. Policy Execution Point signals detection of over-the-top application


3. Policy Control System checks resources and pushes changes

Policy Execution

Point


Application Triggered Application Triggered –– Policy Exec Pt. detection of Policy Exec Pt. detection of ‘‘overover--thethe--toptop’’ requestsrequests

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3. Policy Execution Point signals Policy Control System when quota is up

2. Policy Control System provisions quota at Policy Execution Point

Network Core

EdgeAccessCPE



PortalPortal

Enterprise IT

1. Customer makes quota changes

4. Customer notified and billing updated

Enterprise User

Policy Execution

Point


Application Triggered Application Triggered –– Policy Exec Pt. detection & control of usagePolicy Exec Pt. detection & control of usage--based servicebased service


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5. Policy Control System pushes changes to network

Storage

Network Core

EdgeAccessCPE


Billing Billing Usage Usage PolicyPolicy

Customer Customer SelfSelf--service service

PortalPortal

Enterprise IT

2. Customer makes service changes

3. Policy Control System checks resources and updates schedules

4. Service demand & admission history updated

Engineer

1. Engineer configures monitoring policy

PortalPortal

6. Policy Execution Point reports on usage to collector

Policy Execution

Point



Service MonitoringService Monitoring

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INTEGRATED APPLICATIONS

• Improves application throughput on a given infrastructure

• Delivers better end-user response times

• Avoids costly and ineffective technology upgrades

• Avoids costly application rework

INTEGRATED APPLICATIONS

• Improves application throughput on a given infrastructure

• Delivers better end-user response times

• Avoids costly and ineffective technology upgrades

• Avoids costly application rework

Application Protocol

Optimization

TIMETIME

Networked-BasedCommon Services

Delivery

INTEGRATEDSERVICES

• Improves business processes

• Maximizes resource utilization

• Increases productivity

• Increases Quality of Service

INTEGRATEDSERVICES

• Improves business processes

• Maximizes resource utilization

• Increases productivity

• Increases Quality of Service

INTEGRATEDTRANSPORT

• Improves IT utilization

• Improves efficiency of networked assets

• Increases network availability & security

• Reduces TCO

INTEGRATEDTRANSPORT

• Improves IT utilization

• Improves efficiency of networked assets

• Increases network availability & security

• Reduces TCO

Networked Infrastructure Virtualization

Intelligent Information Networks

Intelligent Information Networks

BU

SIN

ESS

VA

LUE

/ M

AR

KET

VA

LUE

BU

SIN

ESS

VA

LUE

/ M

AR

KET

VA

LUE

Implementing the Intelligent Information Network

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Inte

ract

ive

Serv

ices

Laye

r Application Networking Services

Infrastructure ServicesA

daptive M

anagement

Services

BusinessApplications

App

licat

ion

Laye

r Collaboration Applications

Net

wor

ked

Infr

astr

uctu

re

Laye

r

Server Storage Clients Network

Resource Allocation GapRequirements: • Flexible, efficient and secure

usage of IT resources

Application and Collaboration Integration GapRequirements: • Application integration• Human interaction • Productivity and innovation

Solution:• Infrastructure virtualization• Self-defending networks• Integrated manageability• Centralized policy control

enablement

Solution• Application fluency in the network• Real-time interaction and collaboration

New Services Close Resource & Application GapsNew Services Close Resource & Application Gaps

Summary

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Refer to Other Tutorials

• Please use this icon for referral to other tutorials where appropriate

• Please use this icon for referral to demonstrations of the technology in the SNW Interop Lab when appropriate

Check outSNIA Tutorial:

Storage Virtualization

Check outSNIA Tutorial:

Storage Virtualization

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Q&A / Feedback• Please send any questions or comments on this presentation to

SNIA: [email protected]

Many thanks to the following individuals for their contributions to this tutorial.

SNIA Education Committee

Andrea Chiaffitelli, AT&T Ian Perez-Ponce, Cisco

mailto:[email protected]

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