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articles/migrate/concepts-azure-sql-assessment-calculation.md

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@@ -4,7 +4,7 @@ description: Learn about Azure SQL assessments in Azure Migrate Discovery and as
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author: rashi-ms
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ms.author: rajosh
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ms.topic: conceptual
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ms.date: 02/16/2023
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ms.date: 02/24/2023
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ms.custom: engagement-fy23
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---
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**Sizing criteria** | **Details** | **Data**
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--- | --- | ---
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**Performance-based** | Assessments that make recommendations based on collected performance data | The Azure SQL configuration is based on performance data of SQL instances and databases, which includes: CPU utilization, Memory utilization, IOPS (Data and Log files), throughput and latency of IO operations.
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**Performance-based** | Assessments that make recommendations based on collected performance data | The Azure SQL configuration is based on performance data of SQL instances and databases, which includes CPU utilization, Memory utilization, IOPS (Data and Log files), throughput, and latency of IO operations.
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## How do I assess my on-premises SQL servers?
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Azure SQL Database sizing | **Instance type** | Defaulted to *Single database*.
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Azure SQL Database sizing | **Purchase model** | Defaulted to *vCore*.
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Azure SQL Database sizing | **Compute tier** | Defaulted to *Provisioned*.
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High availability and disaster recovery properties | **Disaster recovery region** | Defaulted to the [cross-region replication pair](/azure/reliability/cross-region-replication-azure.md#azure-cross-region-replication-pairings-for-all-geographies) of the Target Location. In the unlikely event that the chosen Target Location doesn't yet have such a pair, the specified Target Location itself is chosen as the default disaster recovery region.
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High availability and disaster recovery properties | **Disaster recovery region** | Defaulted to the [cross-region replication pair](/azure/reliability/cross-region-replication-azure.md#azure-cross-region-replication-pairings-for-all-geographies) of the Target location. In an unlikely event when the chosen Target location doesn't yet have such a pair, the specified Target location itself is chosen as the default disaster recovery region.
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High availability and disaster recovery properties | **Multi-subnet intent** | Defaulted to Disaster recovery. <br/><br/> Select **Disaster recovery** if you want asynchronous data replication where some replication delays are tolerable. This allows higher durability using geo-redundancy. In the event of failover, data that hasn't yet been replicated may be lost. <br/><br/> Select **High availability** if you desire the data replication to be synchronous and no data loss due to replication delay is allowable. This setting allows assessment to leverage built-in high availability options in Azure SQL Databases and Azure SQL Managed Instances, and availability zones and zone-redundancy in Azure Virtual Machines to provide higher availability. In the event of failover, no data is lost.
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High availability and disaster recovery properties | **Internet Access** | Defaulted to Available.<br/><br/> Select **Available** if you allow outbound internet access from Azure VMs. This allows the use of [Cloud Witness](/azure/azure-sql/virtual-machines/windows/hadr-cluster-quorum-configure-how-to.md?view=azuresql&tabs=powershell#cloud-witness) which is the recommended approach for Windows Server Failover Clusters in Azure Virtual Machines. <br/><br/> Select **Not available** if the Azure VMs have no outbound internet access. This requires the use of a Shared Disk as a witness for Windows Server Failover Clusters in Azure Virtual Machines.
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High availability and disaster recovery properties | **Internet Access** | Defaulted to Available.<br/><br/> Select **Available** if you allow outbound Internet access from Azure VMs. This allows the use of [Cloud Witness](/azure/azure-sql/virtual-machines/windows/hadr-cluster-quorum-configure-how-to.md?view=azuresql&tabs=powershell#cloud-witness) which is the recommended approach for Windows Server Failover Clusters in Azure Virtual Machines. <br/><br/> Select **Not available** if the Azure VMs have no outbound Internet access. This requires the use of a Shared Disk as a witness for Windows Server Failover Clusters in Azure Virtual Machines.
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High availability and disaster recovery properties | **Async commit mode intent** | Defaulted to Disaster recovery. <br/><br/> Select **Disaster recovery** if you're using asynchronous commit availability mode to enable higher durability for the data without affecting performance. In the event of failover, data that hasn't yet been replicated may be lost. <br/><br/> Select **High availability** if you're using asynchronous commit data availability mode to improve availability and scale out read traffic. This setting allows assessment to leverage built-in high availability features in Azure SQL Databases, Azure SQL Managed Instances, and Azure Virtual Machines to provide higher availability and scale out.
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[Review the best practices](best-practices-assessment.md) for creating an assessment with Azure Migrate.
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### Instances to Azure SQL MI and Databases to Azure SQL DB configuration
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After the assessment determines the readiness and the recommended Azure SQL deployment type, it computes a specific service tier and Azure SQL configuration(SKU size) that can meet or exceed the on-premises SQL instance performance:
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After the assessment determines the readiness and the recommended Azure SQL deployment type, it computes a specific service tier and Azure SQL configuration (SKU size) that can meet or exceed the on-premises SQL instance performance:
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1. During the discovery process, Azure Migrate collects SQL instance configuration and performance that includes:
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- vCores (allocated) and CPU utilization (%)
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- CPU utilization for a SQL instance is the percentage of allocated CPU utilized by the instance on the SQL server
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- The Assessment isn't able to collect the performance data for some or all the servers in the assessment period. For a high confidence rating, ensure that:
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- Servers are powered on for the duration of the assessment.
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- Outbound connections on ports 443 are allowed.
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- If Azure Migrate connection status of the SQL agent in Azure Migrate is "Connected", check the last heartbeat.
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- If Azure Migrate connection status for all SQL instances is "Connected" in the discovered SQL instance section.
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- If Azure Migrate connection status of the SQL agent in Azure Migrate is *Connected*, check the last heartbeat.
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- Azure Migrate connection status for all SQL instances is *Connected* in the discovered SQL instance section.
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**Recalculate** the assessment to reflect the latest changes in confidence rating.
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- Some databases or instances were created during the time for which the assessment was calculated. For example, you created an assessment for the performance history of the last month, but some databases or instances were created only a week ago. In this case, the performance data for the new servers won't be available for the entire duration and the confidence rating would be low.

articles/migrate/discovered-metadata.md

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articles/migrate/how-to-discover-applications.md

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articles/migrate/migrate-support-matrix-hyper-v.md

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# Support matrix for Hyper-V assessment
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This article summarizes prerequisites and support requirements when you discover and assess on-premises servers running in a Hyper-V environment for migration to Azure, using the [Azure Migrate: Discovery and assessment](migrate-services-overview.md#azure-migrate-discovery-and-assessment-tool) tool. If you want to migrate servers running on Hyper-V to Azure, review the [migration support matrix](migrate-support-matrix-hyper-v-migration.md).
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To set up discovery and assessment of servers running on Hyper-V, you create a project, and add the Azure Migrate: Discovery and assessment tool to the project. After the tool is added, you deploy the [Azure Migrate appliance](migrate-appliance.md). The appliance continuously discovers on-premises servers, and sends server metadata and performance data to Azure. After discovery is complete, you gather discovered servers into groups, and run an assessment for a group.
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To set up discovery and assessment of servers running on Hyper-V, you create a project, and add the Azure Migrate: Discovery and assessment tool to the project. After the tool is added, you deploy the [Azure Migrate appliance](migrate-appliance.md). The appliance continuously discovers on-premises servers and sends server metadata and performance data to Azure. After discovery is complete, you gather discovered servers into groups, and run an assessment for a group.
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## Limitations
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| **Support** | **Details**
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| :------------------- | :------------------- |
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| **Hyper-V host** | The Hyper-V host can be standalone, or deployed in a cluster.<br/><br/> The Hyper-V host can run Windows Server 2019, Windows Server 2016, or Windows Server 2012 R2. Server core installations of these operating systems are also supported. <br/>You can't assess servers located on Hyper-V hosts running Windows Server 2012.
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| **Hyper-V host** | The Hyper-V host can be standalone or deployed in a cluster.<br/><br/> The Hyper-V host can run Windows Server 2019, Windows Server 2016, or Windows Server 2012 R2. Server core installations of these operating systems are also supported. <br/>You can't assess servers located on Hyper-V hosts running Windows Server 2012.
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| **Permissions** | You need Administrator permissions on the Hyper-V host. <br/> If you don't want to assign Administrator permissions, create a local or domain user account, and add the user account to these groups- Remote Management Users, Hyper-V Administrators, and Performance Monitor Users. |
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| **PowerShell remoting** | [PowerShell remoting](/powershell/module/microsoft.powershell.core/enable-psremoting) must be enabled on each Hyper-V host. |
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| **Hyper-V Replica** | If you use Hyper-V Replica (or you have multiple servers with the same server identifiers), and you discover both the original and replicated servers using Azure Migrate, the assessment generated by Azure Migrate might not be accurate. |
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## Azure Migrate appliance requirements
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Azure Migrate uses the [Azure Migrate appliance](migrate-appliance.md) for discovery and assessment. You can deploy the appliance using a compressed Hyper-V VHD that you download from the portal, or using a [PowerShell script](deploy-appliance-script.md).
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Azure Migrate uses the [Azure Migrate appliance](migrate-appliance.md) for discovery and assessment. You can deploy the appliance using a compressed Hyper-V VHD that you download from the portal or using a [PowerShell script](deploy-appliance-script.md).
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- Learn about [appliance requirements](migrate-appliance.md#appliance---hyper-v) for Hyper-V.
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- Learn about URLs that the appliance needs to access in [public](migrate-appliance.md#public-cloud-urls) and [government](migrate-appliance.md#government-cloud-urls) clouds.

articles/migrate/migrate-support-matrix-physical-migration.md

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# Support matrix for migration of physical servers, AWS VMs, and GCP VMs

articles/migrate/migrate-support-matrix-physical.md

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articles/migrate/migrate-support-matrix-vmware.md

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# Support matrix for VMware discovery

articles/migrate/whats-new.md

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[Azure Migrate](migrate-services-overview.md) helps you to discover, assess, and migrate on-premises servers, apps, and data to the Microsoft Azure cloud. This article summarizes new releases and features in Azure Migrate.
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## Update (February 2023)
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- Discovery and assessment of SQL Server Always On Failover Cluster Instances and Always On Availability Groups is now in preview. [Learn more](how-to-discover-applications.md).
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- Discovery and assessment of SQL Server Always On Failover Cluster Instances and Always On Availability Groups is now supported. [Learn more](how-to-discover-applications.md).
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## Update (January 2023)
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- Envision savings with [Azure Savings Plan for compute](https://azure.microsoft.com/pricing/offers/savings-plan-compute) (ASP) savings option with Azure Migrate business case and assessments. ASP as a savings option assumption/setting is now available for business case, Azure VM assessment, Azure SQL assessment, and Azure App Service assessment.

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