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| 1 | +--- |
| 2 | +title: Concepts – Migration considerations with VMware HCX |
| 3 | +description: Learn about VMware HCX migration considerations for Azure VMware Solution. |
| 4 | +author: rvandenbedem |
| 5 | +ms.author: rvandenbedem |
| 6 | +ms.topic: conceptual |
| 7 | +ms.service: azure-vmware |
| 8 | +ms.date: 3/20/2024 |
| 9 | +ms.custom: engagement-fy24 |
| 10 | +--- |
| 11 | + |
| 12 | +# VMware HCX migration considerations |
| 13 | + |
| 14 | +VMware HCX offers five options with the HCX Enterprise Edition license when migrating VMware vSphere virtual machines to the Azure VMware Solution: |
| 15 | + |
| 16 | +- Cold Migration |
| 17 | +- HCX vMotion |
| 18 | +- Bulk Migration |
| 19 | +- Replication Assisted vMotion |
| 20 | +- OS Assisted Migration |
| 21 | + |
| 22 | +The cost of the VMware HCX Enterprise Edition license is included in the cost of the Azure VMware Solution service. |
| 23 | + |
| 24 | +## VMware HCX migration options |
| 25 | + |
| 26 | +Each of these options has different advantages and disadvantages when used. You need to select the best options for your migration plan. |
| 27 | + |
| 28 | +| **Migration Method** | **Migration Downtime** | **Scale** | |
| 29 | +| :-- | :-- | :-- | |
| 30 | +| Cold Migration | Long downtime | VM copy with NFC protocol, small scale | |
| 31 | +| HCX vMotion | None | Serial migrations, small scale | |
| 32 | +| Bulk Migration | Minimal downtime | VM shutdown (source site)/VM power-on (destination site), Parallel migrations, largest scale | |
| 33 | +| Replication Assisted vMotion (RAV) | None | Parallel migrations, larger scale | |
| 34 | +| OS Assisted Migration (OSAM) | Conversion downtime | Hyper-V and KVM workload migrations | |
| 35 | + |
| 36 | +## VMware HCX architecture |
| 37 | + |
| 38 | +The Azure VMware Solution deploys VMware HCX as an Add-On. A VMware HCX Service Mesh is used to connect two sites together, including a Layer 2 network extension. This allows VMware vSphere virtual machines to be migrated from the on-premises site to the Azure VMware Solution private cloud. |
| 39 | + |
| 40 | +:::image type="content" source="media/concepts/vmware-hcx-migration-concepts.png" alt-text="Diagram showing the architecture of VMware HCX with the Azure VMware Solution." border="false" lightbox="media/concepts/vmware-hcx-migration-concepts.png"::: |
| 41 | + |
| 42 | +## Next Steps |
| 43 | + |
| 44 | +After learning about the VMware HCX migration considerations of the Azure VMware Solution, consider exploring the following articles: |
| 45 | + |
| 46 | +- [Create an HCX network extension](configure-hcx-network-extension.md) |
| 47 | +- [HCX Network extension high availability (HA)](configure-hcx-network-extension-high-availability.md) |
| 48 | +- [Enable HCX access over the internet](enable-hcx-access-over-internet.md) |
| 49 | +- [Upgrade HCX on Azure VMware Solution](upgrade-hcx-azure-vmware-solutions.md) |
| 50 | +- [Use VMware HCX Run Commands](use-hcx-run-commands.md) |
| 51 | +- [Enable SQL Azure hybrid benefit for Azure VMware Solution](enable-sql-azure-hybrid-benefit.md) |
| 52 | +- [Migrate a SQL Server standalone instance to Azure VMware Solution](migrate-sql-server-standalone-cluster.md) |
| 53 | +- [Migrate a SQL Server Always On Failover Cluster Instance to Azure VMware Solution](migrate-sql-server-failover-cluster.md) |
| 54 | +- [Migrate a SQL Server Always On Availability Group to Azure VMware Solution](migrate-sql-server-always-on-availability-group.md) |
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