📦 Backup & Recovery in Azure

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🔄 Backup vs Disaster Recovery (DR)

Backup	Disaster Recovery (DR)
Focuses on data protection	Focuses on business continuity
Simple copy of data for recovery	Ensures app/service availability after an outage
Data-level recovery (files, VMs, DBs)	Site-level failover & replication
Uses Azure Backup service	Uses Azure Site Recovery (ASR)

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🛡️ Azure Backup Service Overview

• Azure Backup provides backup for Azure VMs, Files, SQL, SAP HANA.
• Centralized management via Recovery Services Vaults.
• Supports long-term retention.
• Secure with encryption and RBAC access.

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⚙️ Steps to Configure Azure VM Backup

✅ Pre-requisites:

• Azure Subscription
• Azure VM running
• Azure CLI or Portal access

✅ Steps:

1. Create Recovery Services Vault
2. Configure Backup Policy
3. Enable Backup for VM
4. Perform Manual Backup (On-Demand)
5. Restore VM from Recovery Point

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📌 Azure CLI Commands for VM Backup

# Login to Azure
az login

# Create Resource Group
az group create --name MyBackupRG --location eastus

# Create Recovery Services Vault
az backup vault create \
  --resource-group MyBackupRG \
  --name MyRecoveryVault \
  --location eastus

# Enable Backup for VM
az backup protection enable-for-vm \
  --vault-name MyRecoveryVault \
  --resource-group MyBackupRG \
  --vm MyVMName \
  --policy-name DefaultPolicy

# Trigger Backup Immediately
az backup protection backup-now \
  --vault-name MyRecoveryVault \
  --resource-group MyBackupRG \
  --item-name MyVMName \
  --backup-management-type AzureIaasVM \
  --workload-type VM

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🏢 Azure Site Recovery (ASR) Overview

• Azure Site Recovery provides disaster recovery orchestration.
• Replicates VMs across Azure Regions or On-Premises to Azure.
• Supports failover, failback, test failover scenarios.
• Works with Recovery Services Vaults.

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⚙️ Steps to Configure Azure Site Recovery (VM Replication & DR Setup)

✅ Pre-requisites:

• Azure VM deployed.
• Recovery Services Vault.
• Replication Policy created.

✅ Steps:

1. Create Recovery Services Vault (if not already created)
2. Enable Replication for Azure VM
3. Perform Test Failover
4. Failover (In case of Disaster)
5. Failback Post-Recovery

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📌 Azure CLI Commands for Site Recovery

# Enable Replication for Azure VM
az backup vault backup-properties set \
  --name MyRecoveryVault \
  --resource-group MyBackupRG \
  --backup-storage-redundancy GeoRedundant

az site-recovery protectable-item list \
  --resource-group MyBackupRG \
  --vault-name MyRecoveryVault \
  --fabric-name Azure \
  --container-name MyBackupRG

az site-recovery replication-protected-item create \
  --resource-group MyBackupRG \
  --vault-name MyRecoveryVault \
  --fabric-name Azure \
  --protection-container-name MyBackupRG \
  --name MyVMName \
  --policy-id <PolicyID>

# Trigger Test Failover
az site-recovery recovery-plan test-failover \
  --name MyRecoveryPlan \
  --vault-name MyRecoveryVault \
  --resource-group MyBackupRG \
  --failover-direction PrimaryToSecondary

# Trigger Actual Failover
az site-recovery replication-protected-item failover-commit \
  --resource-group MyBackupRG \
  --vault-name MyRecoveryVault \
  --fabric-name Azure \
  --protection-container-name MyBackupRG \
  --name MyVMName

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♻️ Restore Virtual Machine (Backup Recovery Steps)

✅ Via Azure Portal Steps:

1. Go to Recovery Services Vault > Backup Items.

2. Select Azure Virtual Machine > Choose VM.

3. Click on Restore VM.

4. Select Restore Point > Restore as:

   • Create new VM
   • Restore Disks

5. Review and Initiate Restore.

✅ Via Azure CLI Restore Command:

az backup recoverypoint list \
  --resource-group MyBackupRG \
  --vault-name MyRecoveryVault \
  --item-name MyVMName \
  --backup-management-type AzureIaasVM \
  --workload-type VM

# Use Recovery Point ID from above to trigger Restore
az backup restore restore-disks \
  --resource-group MyBackupRG \
  --vault-name MyRecoveryVault \
  --container-name IaasVMContainer;iaasvmcontainerv2;MyVMName \
  --item-name MyVMName \
  --recovery-point-id <RecoveryPointID> \
  --storage-account MyStorageAccount

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📝 Important Points Summary:

• Backup ensures data protection; DR ensures service availability.
• Azure Backup is used for data-level restores (files, VMs, DBs).
• Azure Site Recovery is for business continuity (replicating apps/VMs).
• Recovery Services Vault is the centralized control for both.
• Always perform Test Failover in ASR to validate DR readiness.
• Use Geo-Redundant Storage (GRS) for backup vaults in production.

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Do you want me to also give you a README.md file structure with all these codes ready for a GitHub repo? (Backup & DR Project Structure)?