A minimum of three replicas should be kept for production image versions
Impact:MediumCategory:High Availability
APRL GUID:b49a39fd-f431-4b61-9062-f2157849d845
Description:
Keeping a minimum of 3 replicas for production images in Azure's Compute Gallery ensures scalability and prevents throttling in multi-VM deployments by distributing VM deployments across different replicas. This reduces the risk of overloading a single replica.
Zone redundant storage should be used for image versions
Impact:MediumCategory:High Availability
APRL GUID:488dcc8b-f2e3-40ce-bf95-73deb2db095f
Description:
Use ZRS for high availability when creating image/VM versions in Azure Compute Gallery, offering resilience against Availability Zone failures. ZRS accounts are advisable in regions with Availability Zones, with the choice of Standard_ZRS recommended over Standard_LRS for these regions.
Consider creating TrustedLaunchSupported images where possible
Impact:LowCategory:High Availability
APRL GUID:1c5e1e58-4e56-491c-8529-10f37af9d4ed
Description:
We recommend creating Trusted Launch Supported Images for benefits like Secure Boot, vTPM, trusted launch VMs, large boot volume. These are Gen 2 Images by default and you cannot change a VM's generation after creation, so review the considerations first.
Create Image Versions replicas in secondary region
Impact:MediumCategory:Disaster Recovery
APRL GUID:b14ee8ed-7d27-447b-b6fb-6472cb5f4b75
Description:
On multi-region deployments, replicate Image Versions to a secondary region to ensure disaster recovery capability. This ensures that the Image Versions are available in the secondary region in case of a disaster in the primary region.
Click the Azure Resource Graph tab to view the query
//under-development
Configure Image version replica count per region.
Impact:MediumCategory:Disaster Recovery
APRL GUID:b3c3ba1d-7de6-442d-8c50-023330fbf765
Description:
You can set a different replica count in each target region, based on the scale needs for the region. For every 20 VMs that you create concurrently, we recommend you keep one replica.