2. SNIA Legal Notice
EDUCATION
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• This presentation is a project of the SNIA
Education Committee.
WAN Application 2
3. Abstract EDUCATION
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.
WAN Application 3
4. Agenda
EDUCATION
• 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
WAN Application 4
5. WAN Anatomy:
Inside the Pipe EDUCATION
• Scarce bandwidth resources rarely aligned with changing business
priorities and demand
• Under heavy loads, critical applications and network services suffer
WAN Application 5
6. What Is Needed…?
EDUCATION
• 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
WAN Application 6
7. Key Application &
Infrastructure Costs EDUCATION
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
WAN Application 7
8. Typical Distributed
Enterprise EDUCATION
BRANCH OFFICE
BRANCH OFFICE
BRANCH OFFICE
• Expensive distributed I/T
infrastructure:
– File and print servers
– Email servers
– Tape backup
– Licensing
• Application delivery woes: WAN
– Congested WAN
– Bandwidth and latency
– Poor productivity
• Data Protection Risks:
– Failing backups
– Costly off-site vaulting
– Regulatory Compliance
DATA CENTER
WAN Application 8
9. The WAN Is A Barrier To
Consolidation EDUCATION
• Applications are
designed for LAN Round Trip Time (RTT) ~ 0mS
environments:
LAN
– High bandwidth Client
Switch Server
– Low latency
– Reliability
• WAN characteristics
hinder consolidation:
Round Trip Time (RTT) ~ many milliseconds
– Already congested
Routed Network
– Low bandwidth Client
LAN
Switch
LAN
Switch Server
– Latency
– Packet Loss
WAN Application 9
10. Latency Attributes
EDUCATION
• 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
WAN Application 10
11. Bandwidth Limitations
EDUCATION
• 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!
WAN Application 11
12. Addressing The WAN
Challenge EDUCATION
Source Need Technology
• Reduced number of network
Latency roundtrips caused by chatty • Intelligent protocol proxies
application protocols
• Improved application response time
Bandwidth on congested links by reducing the • Application caching
Utilization amount of data sent across the • Compression
WAN
• Improved network throughput (total
Transport • TCP optimizations
amount of data) by improving
Throughput transport behavior • Adaptive congestion mgmt.
• Physical integration into existing
Network network platforms
• Router modules, linecards
Integration • Compliance with network functions
• Feature interoperability
Administrative • Replacement for services that • Centrally managed remote
Traffic branch office servers provide services interface
WAN Application 12
13. Overcoming WAN Barriers to
Application Consolidation EDUCATION
• 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
WAN
BRANCH OFFICE Oiz
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tm
id
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dp
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WAN Application 13
14. WAN-enabled Application
Delivery Services Benefits EDUCATION
BRANCH OFFICE
• Technology implementations BRANCH OFFICE BRANCH OFFICE
provide:
– Transparent integration
– Robust optimizations
– Auto discovery
– Policy-Based configuration
• Consolidation benefits
WAN
include:
– Remove costly servers
– Centralize data protection
– Save WAN resources
• Improvements include:
– Application acceleration
– WAN optimization
– Local infrastructure services
DATA CENTER
WAN Application 14
15. Accelerates Broad Range
of Applications EDUCATION
Application Application Protocol Improvement
• Ensures LAN-like
• Windows (CIFS)
File Sharing • 2X-400X performance for
• UNIX (NFS) branch-based
• Exchange (MAPI) access of corporate
E-mail • SMTP/POP3, IMAP • 2X-50X applications
• Notes
• Enables branch
Internet / server and storage
• HTTP, HTTPS, WebDAV • 2X-50X
Intranet consolidation
Data Transfer • FTP • 2X-50X without affecting
workflow and
Software • SMS (CIFS, HTTP) employee
• 2X-100X
Distribution • Altiris (HTTP) productivity
• SQL
Database • Simple network
• Oracle • 2X-10X
Applications integration enables
• Notes
lower TCO
Data • Backup Applications
• 2X-50X
Protection • Replication Applications
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.
WAN Application 15
16. WAN Application Infrastructure
& Storage Network Integration EDUCATION
BRANCH OFFICE
• Relocation of business essential BRANCH OFFICE BRANCH OFFICE
data from edge-to-core is a bi-
product of WAN application
infrastructure that creates
opportunities for:
Opt
– Scaling existing datacenter
O
storage networking footprints pt O
tp
(NAS & SAN) to support increases WAN
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 DATA CENTER
include data availability for
collaboration to data protection for
risk mitigation SAN
WAN Application 16
17. WAN Application Infrastructure
& BCDR Integration EDUCATION
• 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 Optimized
WAN
Asynchronous Replication
Remote Backup/Archiving
SAN Continuous Data Protection
Tape Vaulting SAN
WAN Application 17
18. Achieving Integrated Application
Service Delivery EDUCATION
BRANCH OFFICE
BRANCH OFFICE
BRANCH OFFICE
• Acceleration BRANCH OFFICE
– Reduce response times
File Cache /
• WAN Optimization Local Print
Services
– Minimize bandwidth / IP SLA
latency Measurements
• Wide Area File Services NetFlow
Auto QoS
ACLs
– Consolidate file/print/storage WAN
Auto QoS Optimization
• Flow Monitoring NetFlo
WAN w
– Reduce network costs Optimization
• QoS
– QoS configuration DATA CENTER
DATA CENTER
• IP SLAs
– End-to-end performance
mgmt
WAN Application 18
19. Implementing the Intelligent
Information Network EDUCATION
Intelligent
Application Information
Networks
Protocol
Optimization
Networked-Based
BUSINESS VALUE / MARKET VALUE
Common Services
Delivery
Networked
Infrastructure INTEGRATED
Virtualization APPLICATIONS
• Improves application
INTEGRATED throughput on a given
INTEGRATED SERVICES infrastructure
TRANSPORT
• Improves IT • Improves business • Delivers better end-
utilization processes user response times
• Improves efficiency • Maximizes resource • Avoids costly and
of networked utilization ineffective technology
assets upgrades
• Increases
• Increases network
productivity • Avoids costly
availability &
application rework
security • Increases Quality of
• Reduces TCO Service
WAN Application TIME 19
20. Communicate Events & Policies
Across Storage Networking EDUCATION
Uniform Set of Policies Across WAN Application Infrastructure
Intelligent
Network • Events occurring in the network trigger
execution of rules in real-time resulting in
Policy Management decisions that enforced by dynamically
configuring the network for storage service
Policy Policy
delivery
Definition Validation
– Event types include user actions (portal, logon),
storage services, and network conditions
(network outage, time-of-day, congestion)
Resource Management Basic Types of Policy Management:
• Dynamic Network and Hosting
Resource Provisioning / Policy Based Network
Inventory
Monitor Management
– Configuring QoS on an aggregation router for
video delivery
Workflow – Limiting peer-to-peer traffic
Policy – Different time-of-day bandwidth and CoS
profiles
Execution
• Admission control – Traffic based
WAN Application 21
21. Policy-Based Service Control
Scenario 1 EDUCATION
User Triggered
1. Customer makes
service changes
Self-Service Billing
Portal 3. Billing & Usage
Policy records Policy
updated
2. Policy Control
System checks
Enterprise IT resources and
updates schedules
4. Policy Control
System (PCS)
pushes changes to
network
Network Provisioning
Policy
Application Execution
Optimization Point (PEP)
Network
Core
CPE Edge
Access Storage
WAN Application 22
22. Policy-Based Service Control
Scenario 2 EDUCATION
Application Triggered
Customer Billing
Self-Service Usage
Portal Policy
5. Billing & usage
updated 2. Application signals Policy
Policy Control System for
Control admission control &
System bandwidth flex
3. Policy Control
System checks
policy, resources
4. Policy Control
& pushes changes
System
responds to
Network Provisioning application
Enterprise
User
1. User initiates
Policy
application session
Execution
Point
Network
Core
CPE Access Edge Storage
WAN Application 23
23. Summary
EDUCATION
Application and Collaboration
Integration Gap
Requirements:
Application
Business Collaboration • Application integration
Layer
Applications Applications • Human interaction
• Productivity and innovation
Management
Application Networking Services Solution
Interactive
Services
Adaptive
Services
• Application fluency in the network
Layer
• Real-time interaction and
Infrastructure Services collaboration
Resource Allocation Gap
Infrastructure
Networked
Requirements:
Layer
Server Storage Clients Network • Flexible, efficient and secure
usage of IT resources
Solution:
• Infrastructure virtualization
• Self-defending networks
• Integrated manageability
New Services Close Resource & Application Gaps • Centralized policy control
enablement
WAN Application 27
24. Refer to Other Tutorials
EDUCATION
• 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
WAN Application 28
25. Q&A / Feedback
EDUCATION
• 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
WAN Application 29
