1. More Virtual Machines 2

2. Lessons Endpoints Availability & Grouping concepts
Start / Stop / Deallocate / Delete

3. Endpoints

4. Endpoints Communication between VMs does not use Endpoints
Uses TCP or UDP
Endpoints provide:
Inbound access to VM
Load-balancing between multiple VMs

5. Endpoint - Load Balancing
Load-balanced Endpoint provide two functions:
Performance: Spread load between multiple VMs
Fault tolerance: Ensure responsiveness if a VM is down
Uses periodic probe to test responsiveness
Is a per-port setting - for example HTTP-80

6. Availability and Grouping

7. Groupings "Grouping" Cloud Service (= public IP and management unit)
Virtual Network (= can communicate)
Affinity Group (= placed near each other)
Fault Domain (= physical racks)
Availability Set (= place in different racks)
Update Domain (= update at different times)

8. Availability Affinity Group - Place VMs "near" each other
Availability set - But place VMs not "too close" together
Too close = single-point-of-failure (= Fault Domain)

9. Start / Stop / Deallocate / Delete

10. SSDD - Start / Stop / Deallocate / Delete VMs
Start VM
Stop VM
Still on same physical server - still counts as "usage"
Deallocate VM
Delete VM

11. Authentication and Access (4x)
Portal access
Uses Live ID (Microsoft Account)
Go to
Role: Service Administrator or Co-Administrator
Uses special REST API without providing certificate
Management certificate
Certificate can be self-signed
Does not check certificate expiration
Used by PowerShell
Used by REST API
Storage access
Uses secret key
Or anonymous share access
RDP VM access
Uses username/password

12. 2/23/ :17 PM
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