Design decision entanglement.

The most complex decisions need to be made first
Operating Systems
Windows 7 = Windows XP (x) 1.25 resources when optimized
Use Case > Personal desktop and pool > Pod and Block > VMware infrastructure > Storage Design > User access Device

Storage Design Considerations

Server Workload
DR
OS
Disposable disks
Workload IOPS 2.5x standard deviation for design
Max footprint
Repositories - Home Dirs, Persistent Disks, Profile Stores, Transfer server, templates, applications

Non functional specifications

Manageability
Security
Availability
Recoverability
Performance
Users Love for system, dislike for change
Migration

Design checklist

Simplicity
User involvement
Balanced business and technical best practice
Design rationales
Clarity over ambiguity
Reusable
Simplicity

Best Practices

OS optimization
Antivirus resource demands
Storage design
PCoIP integration
Business case
Avoid the meandering path to failure
PCoIP one level below VOIP

Assessment > PoC > Pilot > Production design > Production Deployment