To ensure your services aren't interrupted and avoid a single point of failure, it's recommended to deploy at least two instances of each VM. This feature is called an availability set.
An availability set is a logical feature used to ensure that a group of related VMs are deployed so that they aren't all subject to a single point of failure and not all upgraded at the same time during a host operating system upgrade in the datacenter. VMs placed in an availability set should perform an identical set of functionalities and have the same software installed.
Microsoft does not automatically update your VM's OS or software. You have complete control and responsibility for that. However, the underlying software host and hardware are periodically patched
When you place VMs into an availability set, Azure guarantees to spread them across Fault Domains and Update Domains.
Azure Backup is a backup as a service offering that protects physical or virtual machines no matter where they reside: on-premises or in the cloud.
An availability set is a logical feature used to ensure that a group of related VMs are deployed so that they aren't all subject to a single point of failure and not all upgraded at the same time during a host operating system upgrade in the datacenter. VMs placed in an availability set should perform an identical set of functionalities and have the same software installed.
Microsoft does not automatically update your VM's OS or software. You have complete control and responsibility for that. However, the underlying software host and hardware are periodically patched
When you place VMs into an availability set, Azure guarantees to spread them across Fault Domains and Update Domains.
Azure Backup is a backup as a service offering that protects physical or virtual machines no matter where they reside: on-premises or in the cloud.
- Files and folders on Windows OS machines (physical or virtual, local or cloud)
- Application-aware snapshots (Volume Shadow Copy Service)
- Popular Microsoft server workloads such as Microsoft SQL Server, Microsoft SharePoint, and Microsoft Exchange
- Native support for Azure Virtual Machines, both Windows, and Linux
- Linux and Windows 10 client machines
Unlimited data transfer. Azure Backup does not limit the amount of inbound or outbound data you transfer. Azure Backup also does not charge for the data that is transferred.
Azure Backup utilizes several components that you download and deploy to each computer you want to back up. The component that you deploy depends on what you want to protect.
- Azure Backup agent
- System Center Data Protection Manager
- Azure Backup Server
- Azure Backup VM extension
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