Designing your xen app 7.5 environment

Designing your XenApp 7.5
Environment
April 2014
Andy Baker
Senior Architect
Thomas Berger
Senior Architect

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Agenda
3
• Methodology
• XenApp Overview
• Key Design Decisions
ᵒ User Layer
ᵒ Access Layer
ᵒ Resource Layer
ᵒ Control Layer
ᵒ Hardware Layer
• Design Resources
• Questions

2Assess
4Deploy
3Design
5Monitor1Define
Methodology

Methodology
2Assess
4Deploy
3Design
5Monitor
Assist in the definition of the
strategy that will help your
business take full advantage
of these technologies
1Define

1Define
Methodology
4Deploy
3Design
5Monitor
Review your current
environment, identify use cases
and gather detailed requirements
for the project.
2Assess

1Define
Methodology
2Assess
4Deploy
5Monitor
Define the architecture and operational
processes required to implement and
maintain the production environment
that will satisfy your success criteria.
3Design

3Design
1Define
Methodology
2Assess
5Monitor
Create and configure the
environment to meet
specifications from the
Design phase.
4Deploy

4Deploy
3Design
1Define
Methodology
2Assess
5Monitor
Perform the continued
monitoring and administrative
tasks in several different
capacities.

Session Virtualization
Desktop Virtualization Session Virtualization
Resource Layer
User Layer
Hardware Layer
Access Layer

Delivery
Services
Console
XenApp 6.5 Farm
(IMA)
XenDesktop 5.6 FP1 Site
(FMA)
Citrix
Studio
Web Interface
Receiver
DB DB
IMA
IMA CBP
XenApp
Controller
Server OS
Workers
Desktop OS
Workers
Delivery
Controller
Power &
Capacity
Mgmt
Provisioning
ServicesPVS
WMI
PVS Console
PCM
Console
Today: Separation of Owners & Roles
Different Desktops & Apps Architectures
EdgeSight
Console
VDA

Citrix
Studio
Storefront / Receiver for Web / Web Interface
Receiver
DB
Server OS
Workers
Desktop OS
Workers
Delivery
ControllerProvisioning
Services
FlexCast: Unified Service Delivery Team
FlexCast Management Architecture
VDA VDA
Citrix
Director
Provisioning
Console
XenDesktop / XenApp Site
(FMA)

Key Benefits of FMA
• Unified Management Infrastructure
• Citrix (Desktop) Director
• Simplified Upgrades
ᵒ +/- one major version
• Unified Provisioning
ᵒ MCS and PVS
ᵒ Hybrid Cloud Provisioning

XenApp 7.5 – New Features
• Eliminate CAPEX for
seasonal needs
• Leverage global clouds
for proximity to users
• Same management
consoles and skillsets
• Easier than competitors to
deploy and manage
• Publish dozens of apps in
less than a minute
• Built-in performance
monitoring
• Up to 8% more users per
server compared to
previous versions
• Multi-touch experience
• High-performance over
mobile networks
• Application
compatibility
• Application
remediation
• P2V App Migration
Hybrid cloud
provisioning
Simple
deployment &
management
Platinum
Mobility
Promotions
AppDNA
Complete App
Migration
Toolkit
HDX Mobile
Optimization
technologies
Free
XenMobile MDM
or
20% off
XenMobile Enterprise

Who are the users and what are our requirements
How do users gain access to our resources
What resources will we deliver
How will we manage and maintain the solution
What do I need to make this happen
The 5-layer model
User Layer
Access Layer
Resource Layer
Control Layer
Hardware Layer

The Flexibility of the 5-Layer Model
User Layer
Hardware Layer
Resource Layer
Control Layer
Access Layer
User Layer
Resource Layer
Access Layer
User Layer
Resource Layer
Access Layer
User Layer
Access Layer
Resource Layer

**********
User Layer – Endpoint
• Provide each user group
with appropriate endpoint
• Desktop Lock:
ᵒ Provides seamless user
experience
ᵒ Auto-connect to user’s
personal virtual desktop
ᵒ Only administrator access
to local desktop

User Layer – Bandwidth
21
• Bandwidth requirements
fluctuate based on application
• Seamless apps require less
bandwidth
• Use the following formula to
estimate bandwidth
requirements
H = Users with video without Flash Redirection
D = Users with video with Flash Redirection
X = Users that require 3D graphics
Z = Additional 1000 to 2000kbps to support peaks (<10 users)

Access Layer - Architecture
Site 2
HA Pair or
scale-out
cluster
NetScaler
Gateway
Storefront
Services
Site 1
Scale-out cluster
with web LB
SaaS / Mobile

•Virtual appliance with same functionality as NG MPX
•Designed to upgrade Secure Gateway
•Capacity for medium-size deployments (500 users per appliance)
•Available for Citrix XenServer, VmWare ESX, Microsoft HyperV hypervisors
•Designed for secure access
•High capacity (5,000 users per appliance)
•Upgradable to NetScaler for additional functionality
•Multi-function appliance (secure access, load-balancing, acceleration)
•Highest capacity (10,000+ users per appliance)
•Most reliable hardware
•Ideal for business continuity across multiple datacenters
Access Layer – Appliance Options
NetScaler Gateway VPX
NetScaler SDX 88xx or higher
NetScaler Gateway MPX

Access Layer – Failover Challenges
StoreFront
• DNS round robin
commonly used
• Lacks intelligence
• Sporadic service
denials

Access Layer – Automated Failover
StoreFront
Delivery Controller
NetScaler
• Validates functional
services on functional
servers
• Adds/removes
services automatically
• Built-in configuration
wizards

Access Layer – StoreFront Multi Site
• Homogenous aggregated sites
• Heterogeneous site aggregation
• Site selection using AD Group
(‘Home Farm’)
• Disaster recovery sites
sites
US
Disaster Recovery
EU
DR1
sites
US1
US2
EU1
EU2
sites
SFEU SFUS
Dev

Access Layer – StoreFront Optimized Routing
Without optimization With optimization

Access Layer – StoreFront Location Aware
Gateway
Connect
Direct
Connect
No
Connect

Access Layer – StoreFront Sizing
29
Test CPU Activities per Second Activities per Hour
One Server 75% 291 17,519
90% 375 22,525
Two Servers 75% 529 31,789
90% 681 40,872
• StoreFront servers configured with 4 vCPUs and 4GB of RAM
• Heavy usage (means logon, enumerate, subscribe, unsubscribe, logoff)
• StoreFront is CPU intensive, not memory

Resource Layer – XenApp VM Specification
30
• vCPUs per VM will vary according to NUMA architecture
• 1 vCPU = 1 virtual core with hyper threading
• 2 * 8 pCore = 16 pCores * 2 = 32 vCores / 4 vCPU = 8 2008 R2 VMs & 128GB
• 2 * 8 pCore = 16 pCores * 2 = 32 vCores / 8 vCPU = 4 2008 R2 VMs & 128GB
Operating
System
vCPU RAM Master Image Write Cache /
Difference Disk
Medium Users
per VM
Server 2008 R2 4 16 60 15GB 25
Server 2012 R2 8 32 60 30GB 55

Control Layer– Image Management (MCS)
VDI SHVD
• Top 3 hypervisors
XenServer
Hyper-V
vSphere
• Workloads
ᵒ Desktop VM
ᵒ Server VM
• Management time
ᵒ 30 min for 1,000 VMs
• Medium-low storage I/O impact
MCS

Control Layer – Image Management (PVS)
VDI SHVD Physical
Servers
Physical
PCs
PVS
• Top 3 hypervisors
ᵒ XenServer
ᵒ Hyper-V
ᵒ vSphere
• Workloads
ᵒ Desktop VM
ᵒ Server VM
ᵒ Physical Server
ᵒ Physical PC
• Low storage I/O impact
• Management time
ᵒ 15 min for 1,000 VMs
ᵒ Reboot speed rollbacks
ᵒ Automated image updates

Control Layer – SQL 2012 Edition
33
Feature Enterprise Business
Intelligence
Standard Web Express
Scalability and performance
Compute capacity OS maximum 4 Sockets or 16 cores 4 Sockets or 16 cores 4 Sockets or 16 cores 1 Socket or 4 cores
Maximum memory utilized OS maximum 64GB 64GB 64GB 1GB
Maximum database size 524PB 524PB 524PB 524PB 10GB
High availability
AlwaysOn failover cluster instances Yes Yes (2 nodes) Yes (2 nodes) - -
AlwaysOn availability groups Yes - - - -
Database mirroring Yes Yes (synchronous
only)
Yes (synchronous
only)
Witness Only Witness Only

Control Layer –Sizing
34
Component Number vCPU RAM Storage
NetScaler
Gateway
2 2 2 3.2
StoreFront 2 2 4 60
Delivery
Controllers
2 2 4 60
SQL Servers 3 2 4 60
License Server 1 2 4 60
Hyper-V SCVMM 1 2 4 100
• Infrastructure sizing example for 500 user deployment
• 2 x Dual Xeon E5-2690 2.9GHz servers can host infrastructure and 385 users!

Hardware Layer – Storage
35
Storage Type Benefits Concerns Appropriate For…
Local Storage • Inexpensive
• Simple to deploy
• Virtual machines are inaccessible
if physical server is offline
• Limited number of disk spindles
(based on server design)
• Longer operational processes as
each local store must be updates
Rack servers
Direct Attached Storage • Moderate expense
• Virtual machine migration when
server is offline
• Failure on DAS array can impact
multiple physical servers
• DAS interconnects consume
valuable space in a blade chassis
• Limited number of connections
to a DAS array
Rack servers
Centralized Storage • Shared master image across
physical servers
• Virtual machine migration when
physical server is offline
• Simple expansion
• Advanced features to help offset
costs
• Expensive
• Complex
• Often requires storage tiers to
control hosts
Blade servers

Hardware Layer – IOPS per User
36
• PVS typically generates less
IOPS than MCS
• MCS generates less IOPS for
Server 2012 on Hyper-V due
to larger block sizes with
VHDX files
0 5 10 15 20 25
Windows 7
Windows 8
Windows 2012
IOPS
Peak Average Steady State IOPS
(95th Percentile)
Provisioning Services
Machine Creation Services

Hardware Layer – Read / Write Ratio
37
• PVS and MCS are very similar
on Windows Server 2012
• Optimize XenApp write cache
storage for writes and not
reads
0% 20% 40% 60% 80%100%
Windows 7 - MCS
Windows 7 - PVS
Windows 8 - MCS
Windows 8 - PVS
Windows 2012 - MCS
Windows 2012 - PVS
Percent
Read/Write Ratio
Read Write

Hardware Layer – Users per Server
38
• Based on Dual Xeon E5-2690
2.9GHz (16 total cores)
• XenApp hosts ~25% more
users that XenDesktop
• Server 2012 hosts ~10% more
users than Server 2008 R2
• Decrease by ~10-20% for AV
• Decrease by 20% for Office
2013 not Office 20070
50
100
150
200
250
300
Win 7 Win 8 Win
2008r2
Win 2012
UsersperServer
Optimized for Scale Optimized for UX

XenApp Blueprint
40
http://www.citrix.com/products/xenapp/tech-info.html
• High-level architectures based
on common scenarios
• Provides descriptive design
guidance
• Based on Citrix Consulting
leading practices and in-depth
validation by Citrix Solutions
Lab

Project Accelerator
41
http://project.citrix.com
• Allows key design decisions to
be changed
Lab
• Generates architectural
diagram and sizing plan
• ~14,000 projects

Virtual Desktop Handbook
42
http://support.citrix.com/article/CTX139331
• Detailed information on design
decisions
Lab
• Provides useful tips and
experience from the field
• 4:3 aspect ratio
• More than 55,000 downloads

Next Webinar: XenDesktop Design
• Title: Designing your XenDesktop 7.5 Environment
• Description: This webinar will touch on the architectural changes in XenApp
7.5. The session will also cover the Citrix Consulting Methodology, which
focuses on ensuring that projects are properly planned and designed before
implementation begins.
• When: April 29th & 30th
• April 29th – Register Now
• April 30th – Register Now

Fuel your talent with continuous learning.
•Citrix Education offers the following technical training for professionals:
• CXA-103: Citrix XenApp 7.5 Architecture and New Features
• CXA-207: Citrix XenApp 7.5 Skills Update
•Visit bit.ly/CTXTRAINING to save 10%*
•*Offer expires 90 days from receipt of this message. Not valid with any other promotions, packages or discounts. Applies only to new
purchases. Regional limitations may apply.

Simplify your journey, let us guide you.
•Accelerate your implementation and minimize risk by taking advantage of Citrix
Consulting. You’ll get the expertise of seasoned Citrix Consulting Architects to
successfully deploy Citrix solutions in any phase of your project.
•
Visit bit.ly/CTXCONCULTING to learn more about our proven methodology.

Citrix Support Program Options
• Access to Technical Support Engineers when you need it
… Unlimited 24x7x365 Citrix Worldwide Technical Support
• Flexible to meet your changing organizational needs
… Unlimited number of technical contacts from your team
• Assist your teams with support tools and knowledge
…. Learn best practices for optimizing your Citrix infrastructure
• Affordable Technical Support direct from Citrix
… Per-license pricing model allows you to pay as you grow
• Enterprise Support
… Available for over 2500 licenses
• Technical Resource Management
… Single point of contact dedicated to your IT environment
Visit bit.ly/CTXSUPPORT to learn more about our proven methodology.

Designing your xen app 7.5 environment

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