1. MODULE 1: INTRO TO UNIDESK

2. Agenda The Basics of Unidesk Layering Layer storage model Layering Use Cases

3. UNDERSTANDING BASIC LAYERING Module 1

4. What is a layer? A layer is storage entity in an NTFS file system that stores files and registry entries for: – Applications – Operating Systems and – User changes Our Composite File System (CFS) presents these to windows as “merged” C: App O/S User CF S C:\DIR\A.DAT C:\DIR\D.DAT C:\DIR\B.DAT C:\DIR\D.DAT C:\DIR\A.DAT (from O/S) C:\DIR\B.DAT (from App) C:\DIR\D.DAT (from User)

5. Layering applied to desktops File 1 Registry entry 1 File 2 Registry entry 2 File 3 Registry entry 3 Base OS File Sys Base OS Registry Base OS File Sys Base OS Registry Registry Merge File System Filter

6. Three Types of Layers User/Personalization Layer (read/write from desktop) – Machine specific – Domain info, profile, user installed apps, etc. – Actually is two VDMKs sub-layers: one called “Control” the other “Data” “Application” Layers (read only from the desktop) – Shared by desktops – Created by IT admin – Not just for applications or just single applications Operating System Layer (read only from the desktop) – “Gold Image” – Created and maintained/updated by IT

7. What the Desktop “Sees”

8. How does Windows find the ‘stuff.exe’ ? Windows Office CRM User Data User Data User Control User Control 3) Query User Control? Not found. 4) Query CRM? Yes! Satisfy I/O request 2) Is it Data or Control? It is Control 1)User launches stuff.exe from CRM application CFS

9. BASIC LAYER STORAGE

10. Layers Stored as VDMKs Stored on any standard ESX datastore – (local or SAN) Broken into 3 directories – User – App – OS Thin Provisioned VMDKs are the standard storage format

11. LAYERING USE CASES

12. Key Use Cases Full User/Machine Personalization Storage Reduction for persistent desktops Simplified application packaging (layering) Supporting applications that are not supported by app virtualization products Reduced number of gold images Simple desktop repair (not re-imaging)

13. QUESTIONS YOU MAY SEE AGAIN

14. Review Questions How many types of layers does Unidesk support? Unidesk stores layers on what types of datastores? The personalization layer is split into how many “sub layers” What does CFS stand for?