Image Agent Backups (including those taken using the agent inside a VM) are typically the best in all other scenarios, especially where recovery may involve a Unitrends Physical appliance with Instant Recovery.Virtual Machine Backups (HoS) are best where the intended recovery target is back to a hypervisor node of the same platform.Simple Best Practices: As a general rule, unless otherwise eliminated by supported configurations or documented restrictions, the following are loose best practices for determining which type of backup of a particular system to use. Performing Image based backups using in-guest deployed agents (also referred to as block backups).Performing Traditional Agent File Backups using in-OS deployed agents (Also referred to as GOS backups), which may also include separate Database level backups.Performing VM-level backups (also called Host Based backups, or HOS).In this KB, we'll attempt to summarize that information into a single source to help better convey the best use cases for each protection model. Each of these methods have different benefits, restrictions, and options depending on several factors clarified in the Unitrends Administrators Guide. With Unitrends Release 10.3 and higher, customers have more choices for types of backups methods than prior. This KB will attempt to explain the supported best practices for these varying backup types ISSUE With 10.3 and higher releases, customers have more choices for types of backups methods than prior. For more information see Virtual Machine Reliability.Should I protect an Asset using VM, File Agent, or Image Agent backups? You can also plan and implement reliability for your virtual machine configuration. You can try out Azure Backup by following the Azure Backup quickstart. Learn more about working with VM restore points and the restore point collections API. To restore a VM, restore all relevant disks and attach them to a new VM. Once created, VM restore points can then be used to restore individual disks. To save space and costs, you can exclude any disk from your VM restore points. Each restore point stores a VM's configuration and a snapshot for each attached managed disk. The restore point collection itself contains individual restore points for specific VMs. You can use the API to create a VM restore point collection. This approach is most often used by independent software vendor (ISVs) or organizations with a relatively small number of VMs to manage. Create copy of VHD stored as a Managed DiskĪt this time, you can use Azure REST APIs to back up and restore your VMs.For example, if you create a snapshot of a managed disk with provisioned capacity of 64 GB and actual used data size of 10 GB, snapshot will be billed only for the used data size of 10 GB.įor more information on creating snapshots, see: They're billed based on the used portion of the disk. Snapshots can be used to create new managed disks when a VM is rebuilt. Snapshots exist independently of their source disks. A managed snapshot is a full, read-only copy of a managed disk. In development and test environments, snapshots provide a quick and simple option for backing up VMs that use managed disks. You can get started by replicating your virtual machines. The recovery plan feature is integrated with Azure Automation runbooks. Create recovery plans to orchestrate failover and failback of the entire application running on multiple VMs. You can run disaster-recovery drills with on-demand test failovers, without affecting your production workloads or ongoing replication. You can replicate to an Azure region of your choice, since recovery isn't restricted to paired regions. You can configure Azure Site Recovery for your VMs so that your applications are recoverable in matter of minutes with a single click. These scenarios may include widespread service interruptions or regional outages caused by natural disasters. When you restore from a recovery point, you can restore entire VM or specific files.įor a simple, hands-on introduction to Azure Backup for Azure VMs, see the Azure Backup quickstart.įor more information on how Azure Backup works, see Plan your VM backup infrastructure in Azure Azure Site RecoveryĪzure Site Recovery protects your VMs from a major disaster scenario. Azure Backup creates recovery points that are stored in geo-redundant recovery vaults. Azure Backup supports application-consistent backups for both Windows and Linux VMs. You'll use Azure Backup for most use-cases involving backup operations on Azure VMs running production workloads. There are several backup options available for virtual machines (VMs), depending on your use-case. You can protect your data by taking backups at regular intervals. Applies to: ✔️ Linux VMs ✔️ Windows VMs ✔️ Flexible scale sets
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