It covers Azure end to end architecture with High availability and various components in terms of functional and nonfunctional. https://youtu.be/SUb-J9vHqPE

1. Azure IAAS Based Architecture – High
Availability
Azure IAAS Based Architecture

2. Design &
Architecture -
Considerations
Monitoring Logging Security
Notifications
Service
Management/Ope
rations
Storage/Backup
Automation Roles/Policies High Availability
Disaster Recovery Fail over

3. Azure IAAS Architecture
Blob Storage images
Web Client CDN
DNS
Application Gateway
Active
Directory
Key Vault NSG
Identity, Secrets & Access
Management
Security
Center
Azure
Monitor
Health Monitoring
Cost
Management
Billing Alerts
with check
Azure
Devops
ARM
Automation
Networking
VPN
Gateway
Cost Center
Notification
Hub
Source IP:
VM Private IP
(10.1.1.4)
SQL Server
on VM
Site to Site (or) Point to stie (or) Express route
VNet
Service End
Point
Azure
Sentinel

4.  HA – High Availability – Keep you applications 24X7
 DR – Disaster Recovery - Get your applications and data back after a major disaster
 RPO –Recovery Point Objective - Maximum tolerable period in which data might be lost from and IT Service
due to major incident
 RTO – Recovery Time Objective -Maximum tolerable length of down time of your IT Service or Application
Strategy
 Find/Define Applications to enable HA and DR
 Business impact analysis
 Set RPO/RTO
HA & DR Strategy

5. HA –
 Availability sets
 Availability zones
 Auto scaling
 Failover
 Storage failover
 Azure site recovery – VNet replication, VM replication
Levels of HA and DR -
 Low - it can tolerate for few hours and tolerate of loosing few hours data
 No fault isolation – 99.9% SLA
 Take backups and restore the complete the system after a disaster –Blob storage
 Medium - It can tolerate for 15 minutes to on hour -
 Fault isolation with Racks and Storage – 99.95% SLA
 Scale resources in the response to a DR event
 Warm Standby – Can tolerate up to 15minutes
 Availability zones with VM scaleset – 99.99% SLA
 Scale resources in the response to a DR event - Azure Site Recovery
 Hot standby – Real-time
 Enable Multi-Site – Use Traffic Manager or Azure Front door to failover to different region
HA & DR Strategy

6. Credits - https://www.mssqltips.com/sqlservertip/6397/azure-vm-high-availability-and-disaster-recovery-options-for-
sql-server/

7. Azure IAAS Architecture
Blob Storage
Web Client Frontdoor
DNS
Application Gateway
Active
Directory
Key Vault NSG
Identity, Secrets & Access
Management
Security
Center
Azure
Monitor
Health Monitoring
Cost
Management
Billing Alerts
with check
Azure
Devops
ARM
Automation
Networking
VPN
Gateway
Cost Center
Notification
Hub
Source IP:
VM Private IP
(10.1.1.4)
SQL Server
on VM
VNet
Service End
Point
Azure
Sentinel
Blob Storage
Application Gateway Source IP:
VM Private IP
(10.1.1.4)
SQL Server
on VM
Service End
Point
GeoReplication
Active Regions
Standby Regions