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articles/storage/common/redundancy-migration.md

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ms.service: azure-storage
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ms.topic: how-to
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ms.date: 01/15/2025
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ms.date: 02/11/2025
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ms.author: shaas
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ms.subservice: storage-common-concepts
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ms.custom: engagement-fy23, references_regions, devx-track-azurepowershell
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- [Support-initiated](#support-initiated-conversion)
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> [!IMPORTANT]
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> There is no SLA for completion of a conversion. If you need more control over when a conversion begins and finishes, consider a [Manual migration](#manual-migration). Conversion times can vary depending on the size of your account, current resource demands within a region, and other factors.
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> There's no SLA for completion of a conversion. If you need more control over when a conversion begins and finishes, consider a [Manual migration](#manual-migration). Conversion times can vary depending on the size of your account, current resource demands within a region, and other factors.
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> [!TIP]
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> Microsoft recommends using a [customer-initiated conversion](#customer-initiated-conversion) instead of support-initiated conversion whenever possible. You can initiate a conversion and monitor its progress directly from within the Azure portal or with client tool such as PowerShell and the Azure CLI. Because the conversion is initiated by the customer, there is no need to create and manage a support request.
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> Microsoft recommends using a [customer-initiated conversion](#customer-initiated-conversion) instead of support-initiated conversion whenever possible. You can initiate a conversion and monitor its progress directly from within the Azure portal or with client tool such as PowerShell and the Azure CLI. Because the customer initiates the conversion, there's no need to create and manage a support request.
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#### Customer-initiated conversion
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Instead of opening a support request, customers in most regions can start a conversion and monitor its progress. This option eliminates potential delays related to creating and managing support requests. For help determining the regions in which customer-initiated conversion is supported, refer to the [region limitations](#region) article.
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Instead of opening a support request, customers in most regions can start a conversion and monitor its progress. This option eliminates potential delays related to creating and managing support requests. For help with determining the regions in which customer-initiated conversion is supported, refer to the [region limitations](#region) article.
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Customer-initiated conversion can be undertaken in supported regions using the [Azure portal](redundancy-migration.md?tabs=portal#customer-initiated-conversion), [PowerShell](redundancy-migration.md?tabs=powershell#customer-initiated-conversion), or the [Azure CLI](redundancy-migration.md?tabs=azure-cli#customer-initiated-conversion). A conversion typically begins within 72 hours after initiation, but can take longer due to resource availability, data volume, and other factors.
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<sup>2</sup> If the conversion fails, submit a support request to Microsoft to determine the reason for the failure.<br />
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> [!NOTE]
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> While Microsoft acts upon your request for a conversion promptly, there's no guarantee as to when it will complete. If you need your data converted by a certain date, Microsoft recommends that you perform a manual migration instead.
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> While Microsoft acts upon your request for a conversion promptly, there's no guarantee as to when it completes. If you need your data converted by a certain date, Microsoft recommends that you perform a manual migration instead.
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>
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> Conversion times can vary depending on the size of your account, current resource demands within a region, and other factors.
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:::image type="content" source="media/redundancy-migration/request-live-migration-problem-desc-portal-sml.png" alt-text="Screenshot showing how to request a conversion - Problem description tab." lightbox="media/redundancy-migration/request-live-migration-problem-desc-portal.png":::
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1. Select **Next**. The **Recommended solution** tab might be displayed briefly before it switches to the **Solutions** page. On the **Solutions** page, you can check the eligibility of your storage account(s) for conversion:
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1. Select **Next**. The **Recommended solution** tab might be displayed briefly before it switches to the **Solutions** page. On the **Solutions** page, you can check the eligibility of your storage accounts for conversion:
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- **Target replication type**: (choose the desired option from the drop-down)
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- **Storage accounts from**: (enter a single storage account name or a list of accounts separated by semicolons)
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- Select **Submit**.
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:::image type="content" source="media/redundancy-migration/request-live-migration-solutions-portal-sml.png" alt-text="Screenshot showing how to check the eligibility of your storage account(s) for conversion - Solutions page." lightbox="media/redundancy-migration/request-live-migration-solutions-portal.png":::
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:::image type="content" source="media/redundancy-migration/request-live-migration-solutions-portal-sml.png" alt-text="Screenshot showing how to check the eligibility of your storage accounts for conversion - Solutions page." lightbox="media/redundancy-migration/request-live-migration-solutions-portal.png":::
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1. Take the appropriate action if the results indicate your storage account isn't eligible for conversion. Otherwise, select **Return to support request**.
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Make sure the region where your storage account is located supports all of the desired replication settings. For example, if you're converting your account to zone-redundant (ZRS, GZRS, or RA-GZRS), make sure your storage account is in a region that supports it. See the lists of supported regions for [Zone-redundant storage](storage-redundancy.md#zone-redundant-storage) and [Geo-zone-redundant storage](storage-redundancy.md#geo-zone-redundant-storage).
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> [!IMPORTANT]
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> [Customer-initiated conversion](#customer-initiated-conversion) is available in all public regions that support ZRS except for the following:
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> [Customer-initiated conversion](#customer-initiated-conversion) is available in all public regions that support ZRS with the following exceptions:
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> - (North America) Mexico Central
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>
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| Storage account type | Supports LRS | Supports ZRS | Supports conversion<br>(from the Azure portal) | Supports conversion<br>(by support request) | Supports manual migration |
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|:----------------------------|:------------:|:------------:|:-----------------------:|:-------------------------:|:-------------------------:|
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| Standard general purpose v2 | &#x2705; | &#x2705; | &#x2705; | &#x2705; | &#x2705; |
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| Premium file shares | &#x2705; | &#x2705; | | &#x2705; <sup>1</sup> | &#x2705; |
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| Premium file shares | &#x2705; | &#x2705; | &#x2705; | &#x2705; <sup>1</sup> | &#x2705; |
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| Premium block blob | &#x2705; | &#x2705; | | | &#x2705; |
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| Premium page blob | &#x2705; | | | | |
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| Managed disks<sup>2</sup> | &#x2705; | &#x2705; | &#x2705; | | &#x2705; |
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### Access tier
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Make sure the desired redundancy option supports the access tiers currently used in the storage account. For example, ZRS, GZRS and RA-GZRS storage accounts don't support the archive tier. For more information, see [Hot, Cool, and Archive access tiers for blob data](../blobs/access-tiers-overview.md). To convert an LRS, GRS or RA-GRS account to one that supports zone-redundancy, first move the archived blobs to a storage account that supports blobs in the archive tier. Then convert the source account to ZRS, GZRS and RA-GZRS.
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Make sure the desired redundancy option supports the access tiers currently used in the storage account. For example, ZRS, GZRS and RA-GZRS storage accounts don't support the archive tier. For more information, see [Hot, Cool, and Archive access tiers for blob data](../blobs/access-tiers-overview.md). To convert an LRS, GRS or RA-GRS account to one that supports zone-redundancy, first move the archived blobs to a storage account that supports blobs in the archive tier. Then convert the source account to ZRS, GZRS, and RA-GZRS.
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An LRS storage account containing blobs in the archive tier can be switched to GRS or RA-GRS after rehydrating all archived blobs to the Hot or Cool tier. You can also perform a [manual migration](#manual-migration).
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When you initiate a zone-redundancy [conversion](#customer-initiated-conversion) from the Azure portal, the conversion process typically begins within 72 hours after initiation, but can take longer due to resource availability, data volume, and other factors. To monitor the progress of a customer-initiated conversion, see [Monitoring customer-initiated conversion progress](#monitoring-customer-initiated-conversion-progress).
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> [!IMPORTANT]
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> There is no SLA for completion of a conversion. If you need more control over when a conversion begins and finishes, consider a [Manual migration](#manual-migration). Conversion times can vary depending on the size of your account, current resource demands within a region, and other factors.
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> There's no SLA for completion of a conversion. If you need more control over when a conversion begins and finishes, consider a [Manual migration](#manual-migration). Conversion times can vary depending on the size of your account, current resource demands within a region, and other factors.
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After a zone-redundancy conversion, you must wait at least 72 hours before changing the redundancy setting of the storage account again. The temporary hold allows background processes to complete before making another change, ensuring the consistency and integrity of the account. For example, going from LRS to GZRS is a 2-step process. You must add zone redundancy in one operation, then add geo-redundancy in a second. After going from LRS to ZRS, you must wait at least 72 hours before going from ZRS to GZRS.
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