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Copy file name to clipboardExpand all lines: articles/site-recovery/file-server-disaster-recovery.md
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@@ -24,7 +24,7 @@ The aim of an open distributed file-sharing system is to provide an environment
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DFSR uses a compression algorithm known as Remote Differential Compression (RDC) that can be used to efficiently update files over a limited-bandwidth network. It detects insertions, removals, and rearrangements of data in files. DFSR is enabled to replicate only the changed file blocks when files are updated. There are also file server environments, where daily backups are taken in non-peak timings, which cater to disaster needs. DFSR isn't implemented.
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The following diagram illustrates the file server environment with DFSR implemented.
In the previous diagram, multiple file servers called members actively participate in replicating files across a replication group. The contents in the replicated folder are available to all the clients that send requests to either of the members, even if a member goes offline.
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|Environment |Recommendation |Points to consider |
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|---------|---------|---------|
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|File server environment with or without DFSR| [Use Site Recovery for replication](#replicate-an-on-premises-file-server-by-using-site-recovery) | Site Recovery doesn't support shared disk clusters or network attached storage (NAS). If your environment uses these configurations, use any of the other approaches, as appropriate. <br> Site Recovery doesn't support SMB 3.0. The replicated VM incorporates changes only when changes made to the files are updated in the original location of the files.<br> Site Recovery offers a near-synchronous data replication process, and hence in the event of an unplanned failover scenario, there could be potential data loss, and might create USN mismatch issues.
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|File server environment with DFSR |[Extend DFSR to an Azure IaaS virtual machine](#extend-dfsr-to-an-azure-iaas-virtual-machine)|DFSR works well in extremely bandwidth-crunched environments. This approach requires an Azure VM that is up and running all the time. You need to account for the cost of the VM in your planning. |
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|File server environment with DFSR |[Extend DFSR to an Azure IaaS virtual machine](#extend-dfsr-to-an-azure-iaas-virtual-machine)|DFSR works well in extremely bandwidth-crunched environments. This approach requires an Azure VM that is up and running all the time. You need to account for the cost of the VM in your planning. |
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|Azure IaaS VM | File Sync | If you use File Sync in a disaster recovery scenario, during failover you must take manual actions to make sure that the file shares are accessible to the client machine in a transparent way. File Sync requires port 445 to be open from the client machine. |
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### Site Recovery support
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Because Site Recovery replication is application agnostic, these recommendations are expected to hold true for the following scenarios.
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| Source|To a secondary site|To Azure
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| Source|To a secondary site|To Azure
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|---------|---------|---------|
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|Azure|-|Yes|
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|Hyper-V|Yes|Yes
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|VMware|Yes|Yes
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|Physical server|Yes|Yes
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|Azure|-|Yes|
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|Hyper-V|Yes|Yes
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|VMware|Yes|Yes
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|Physical server|Yes|Yes
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> [!IMPORTANT]
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The following steps briefly describe how to use File Sync:
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1.[Create a storage account in Azure](https://docs.microsoft.com/azure/storage/common/storage-create-storage-account?toc=%2fazure%2fstorage%2ffiles%2ftoc.json). If you chose read-access geo-redundant storage for your storage accounts, you get read access to your data from the secondary region in case of a disaster. For more information, see [Disaster recovery and forced failover (preview) in Azure Storage](../storage/common/storage-disaster-recovery-guidance.md?toc=%2fazure%2fstorage%2ffiless%2ftoc.json).
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1.[Create a storage account in Azure](https://docs.microsoft.com/azure/storage/common/storage-create-storage-account?toc=%2fazure%2fstorage%2ffiles%2ftoc.json). If you chose read-access geo-redundant storage for your storage accounts, you get read access to your data from the secondary region in case of a disaster. For more information, see [Disaster recovery and storage account failover](../storage/common/storage-disaster-recovery-guidance.md?toc=%2fazure%2fstorage%2ffiless%2ftoc.json).
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2.[Create a file share](https://docs.microsoft.com/azure/storage/files/storage-how-to-create-file-share).
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3.[Start File Sync](https://docs.microsoft.com/azure/storage/files/storage-sync-files-deployment-guide) on your Azure file server.
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4. Create a sync group. Endpoints within a sync group are kept in sync with each other. A sync group must contain at least one cloud endpoint, which represents an Azure file share. A sync group also must contain one server endpoint, which represents a path on a Windows server.
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Follow these steps to use File Sync:
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1.[Create a storage account in Azure](https://docs.microsoft.com/azure/storage/common/storage-create-storage-account?toc=%2fazure%2fstorage%2ffiles%2ftoc.json). If you chose read-access geo-redundant storage (recommended) for your storage accounts, you have read access to your data from the secondary region in case of a disaster. For more information, see [Disaster recovery and forced failover (preview) in Azure Storage](../storage/common/storage-disaster-recovery-guidance.md?toc=%2fazure%2fstorage%2ffiless%2ftoc.json)..
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1.[Create a storage account in Azure](https://docs.microsoft.com/azure/storage/common/storage-create-storage-account?toc=%2fazure%2fstorage%2ffiles%2ftoc.json). If you chose read-access geo-redundant storage (recommended) for your storage accounts, you have read access to your data from the secondary region in case of a disaster. For more information, see [Disaster recovery and storage account failover](../storage/common/storage-disaster-recovery-guidance.md?toc=%2fazure%2fstorage%2ffiless%2ftoc.json)..
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2.[Create a file share](https://docs.microsoft.com/azure/storage/files/storage-how-to-create-file-share).
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3.[Deploy File Sync](https://docs.microsoft.com/azure/storage/files/storage-sync-files-deployment-guide) in your on-premises file server.
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4. Create a sync group. Endpoints within a sync group are kept in sync with each other. A sync group must contain at least one cloud endpoint, which represents an Azure file share. The sync group also must contain one server endpoint, which represents a path on the on-premises Windows server.
*[Designing Highly Available Applications using RA-GRS](../common/storage-designing-ha-apps-with-ragrs.md?toc=%2fazure%2fstorage%2fblobs%2ftoc.json)
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*[Disaster recovery and storage account failover (preview) in Azure Storage](../common/storage-disaster-recovery-guidance.md?toc=%2fazure%2fstorage%2fblobs%2ftoc.json)
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*[Disaster recovery and storage account failover](../common/storage-disaster-recovery-guidance.md?toc=%2fazure%2fstorage%2fblobs%2ftoc.json)
Copy file name to clipboardExpand all lines: articles/storage/common/redundancy-migration.md
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<sup>1</sup> Incurs a one-time egress charge.
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> [!CAUTION]
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> If you performed an [account failover](https://docs.microsoft.com/azure/storage/common/storage-disaster-recovery-guidance) for your (RA-)GRS or (RA-)GZRS account, it is configured to be locally redundant in the new primary region. Live migration to ZRS or GZRS for such LRS accounts is not supported. You will need to perform [manual migration](https://docs.microsoft.com/azure/storage/common/redundancy-migration#perform-a-manual-migration-to-zrs).
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> If you performed an [account failover](storage-disaster-recovery-guidance.md) for your (RA-)GRS or (RA-)GZRS account, the account is locally redundant in the new primary region after the failover. Live migration to ZRS or GZRS for an LRS account resulting from a failover is not supported. You will need to perform a [manual migration](#perform-a-manual-migration-to-zrs) to ZRS or GZRS.
Copy file name to clipboardExpand all lines: articles/storage/common/storage-designing-ha-apps-with-ragrs.md
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@@ -7,7 +7,7 @@ author: tamram
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ms.service: storage
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ms.topic: conceptual
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ms.date: 01/14/2020
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ms.date: 04/08/2020
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ms.author: tamram
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ms.reviewer: artek
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ms.subservice: common
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* You can use the Storage Client Library to read and write data in either the primary or secondary region. You can also redirect read requests automatically to the secondary region if a read request to the primary region times out.
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* If the primary region becomes unavailable, you can initiate an account failover. When you fail over to the secondary region, the DNS entries pointing to the primary region are changed to point to the secondary region. After the failover is complete, write access is restored for GRS and RA-GRS accounts. For more information, see [Disaster recovery and storage account failover (preview) in Azure Storage](storage-disaster-recovery-guidance.md).
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> [!NOTE]
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> Customer-managed account failover (preview) is not yet available in regions supporting GZRS/RA-GZRS, so customers cannot currently manage account failover events with GZRS and RA-GZRS accounts. During the preview, Microsoft will manage any failover events affecting GZRS/RA-GZRS accounts.
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* If the primary region becomes unavailable, you can initiate an account failover. When you fail over to the secondary region, the DNS entries pointing to the primary region are changed to point to the secondary region. After the failover is complete, write access is restored for GRS and RA-GRS accounts. For more information, see [Disaster recovery and storage account failover](storage-disaster-recovery-guidance.md).
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