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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: 02/07/2024
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ms.date: 01/15/2025
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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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The following table provides an overview of redundancy options available for storage account types and whether conversion and manual migration are supported:
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| Storage account type | Supports LRS | Supports ZRS | Supports conversion<br>(from the portal) | Supports conversion<br>(by support request) | Supports manual migration |
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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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| ZRS Classic<sup>4</sup><br /><sub>(available in standard general purpose v1 accounts)</sub> | &#x2705; | | | | |
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<sup>1</sup> Conversion for premium file shares is available by [opening a support request](#support-initiated-conversion); Customer-initiated conversion can be undertaken using either [PowerShell](redundancy-migration.md?tabs=powershell#customer-initiated-conversion) or the [Azure CLI](redundancy-migration.md?tabs=azure-cli#customer-initiated-conversion).<br />
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<sup>1</sup> Customer-initiated conversion can be undertaken using either [PowerShell](redundancy-migration.md?tabs=powershell#customer-initiated-conversion) or the [Azure CLI](redundancy-migration.md?tabs=azure-cli#customer-initiated-conversion). You can also [open a support request](#support-initiated-conversion).<br />
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<sup>2</sup> Managed disks are available for LRS and ZRS, though ZRS disks have some [limitations](/azure/virtual-machines/disks-redundancy#limitations). If an LRS disk is regional (no zone specified), it can be converted by [changing the SKU](/azure/virtual-machines/disks-convert-types). If an LRS disk is zonal, then it can only be manually migrated by following the process in [Migrate your managed disks](../../reliability/migrate-vm.md#migrate-your-managed-disks). You can store snapshots and images for standard SSD managed disks on standard HDD storage and [choose between LRS and ZRS options](https://azure.microsoft.com/pricing/details/managed-disks/). For information about integration with availability sets, see [Introduction to Azure managed disks](/azure/virtual-machines/managed-disks-overview#integration-with-availability-sets).<br />
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<sup>3</sup> If your storage account is v1, you need to upgrade it to v2 before performing a conversion. To learn how to upgrade your v1 account, see [Upgrade to a general-purpose v2 storage account](storage-account-upgrade.md).<br />
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<sup>4</sup> ZRS Classic storage accounts are deprecated. For information about converting ZRS Classic accounts, see [Converting ZRS Classic accounts](#converting-zrs-classic-accounts).<br />
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### Protocol support
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You can't convert storage accounts to zone-redundancy (ZRS, GZRS or RA-GZRS) if either of the following cases are true:
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You can't convert storage accounts to zone-redundancy (ZRS, GZRS, or RA-GZRS) if either of the following cases are true:
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- NFSv3 protocol support is enabled for Azure Blob Storage
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- The storage account contains Azure Files NFSv4.1 shares with public endpoints configured
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- The storage account contains Azure Files NFSv4.1 shares with public endpoint access enabled
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Converting NFSv4.1 shares with public endpoints enabled isn't supported. To change redundancy for NFS shares with public endpoints, follow these steps in order:
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1. [Disable access](../files/storage-files-networking-endpoints.md#restrict-public-endpoint-access) to the storage account's public endpoint.
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1. Submit the conversion request to change redundancy of the given storage account.
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1. Once the storage account is migrated, [configure private or public endpoints](../files/storage-files-networking-endpoints.md) as required.
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### Failover and failback
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articles/storage/files/files-change-redundancy-configuration.md

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author: khdownie
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ms.service: azure-file-storage
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ms.topic: how-to
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ms.date: 08/26/2024
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ms.date: 01/15/2025
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ms.author: kendownie
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---
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<sup>2</sup> If your storage account contains blobs in the archive tier, review the [access tier limitations](../common/redundancy-migration.md#access-tier) before changing the redundancy type to geo- or zone-redundant.<br />
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<sup>3</sup> The type of conversion supported depends on the storage account type. For more information, see the [storage account table](#storage-account-type).<br />
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<sup>4</sup> Conversion to ZRS or GZRS for an LRS account resulting from a failover isn't supported. For more information, see [Failover and failback](#failover-and-failback).<br />
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<sup>5</sup> Converting from LRS to ZRS [isn't supported if the NFSv3 protocol support is enabled for Azure Blob Storage or if the storage account contains Azure Files NFSv4.1 shares](#protocol-support). <br />
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<sup>5</sup> Converting from LRS to ZRS [isn't supported if the NFSv3 protocol support is enabled for Azure Blob Storage or if the storage account contains Azure Files NFSv4.1 shares with public endpoints enabled](#protocol-support). <br />
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<sup>6</sup> Even though enabling geo-redundancy appears to occur instantaneously, failover to the secondary region can't be initiated until data synchronization between the two regions is complete.<br />
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## Change the replication setting
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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, see the [region limitations](#region) article.
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Customer-initiated conversion can be completed in supported regions using the Azure portal, PowerShell, or the Azure CLI. After initiation, the conversion could still take up to 72 hours to begin.
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For standard file shares, customer-initiated conversion can be completed in supported regions using the Azure portal, PowerShell, or the Azure CLI.
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For premium file shares, customer-initiated conversion is available through PowerShell and Azure CLI. Or you can request a [support-initiated conversion](#support-initiated-conversion).
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After initiation, the conversion could still take up to 72 hours to begin.
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> [!IMPORTANT]
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> There is no SLA for completion of a conversion.
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The following table lists the redundancy options available for storage account types and whether conversion and manual migration are supported:
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| Storage account type | Supports LRS | Supports ZRS | Supports conversion<br>(from the portal) | Supports conversion<br>(by support request) | Supports manual migration |
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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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<sup>1</sup> Conversion for premium file shares is only available by [opening a support request](#support-initiated-conversion); [Customer-initiated conversion](#customer-initiated-conversion) isn't currently supported.<br />
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<sup>1</sup> Customer-initiated conversion can be undertaken using either [PowerShell](redundancy-migration.md?tabs=powershell#customer-initiated-conversion) or the [Azure CLI](redundancy-migration.md?tabs=azure-cli#customer-initiated-conversion). You can also [open a support request](#support-initiated-conversion).<br />
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### Protocol support
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You can't convert storage accounts to zone-redundancy (ZRS or GZRS) if either of the following cases are true:
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- NFSv3 protocol support is enabled for Azure Blob Storage
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- The storage account contains Azure Files NFSv4.1 shares
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- The storage account contains Azure Files NFSv4.1 shares with public endpoint access enabled
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Converting NFSv4.1 shares with public endpoints enabled isn't supported. To change redundancy for NFS shares with public endpoints, follow these steps in order:
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1. [Disable access](storage-files-networking-endpoints.md#restrict-public-endpoint-access) to the storage account's public endpoint.
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1. Submit the conversion request to change redundancy of the given storage account.
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1. Once the storage account is migrated, [configure private or public endpoints](storage-files-networking-endpoints.md) as required.
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### Failover and failback
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