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Merge pull request #107646 from normesta/normesta-reg-updates-5
Notes for Data Lake Gen2 support
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articles/storage/blobs/TOC.yml

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items:
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- name: Multi-protocol access
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href: data-lake-storage-multi-protocol-access.md
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- name: Supported Blob Storage features
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- name: Supported Blob storage features
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href: data-lake-storage-supported-blob-storage-features.md
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- name: Supported Azure services
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href: data-lake-storage-supported-azure-services.md

articles/storage/blobs/storage-blob-change-feed.md

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The purpose of the change feed is to provide transaction logs of all the changes that occur to the blobs and the blob metadata in your storage account. The change feed provides **ordered**, **guaranteed**, **durable**, **immutable**, **read-only** log of these changes. Client applications can read these logs at any time, either in streaming or in batch mode. The change feed enables you to build efficient and scalable solutions that process change events that occur in your Blob Storage account at a low cost.
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[!INCLUDE [updated-for-az](../../../includes/storage-data-lake-gen2-support.md)]
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The change feed is stored as [blobs](https://docs.microsoft.com/rest/api/storageservices/understanding-block-blobs--append-blobs--and-page-blobs) in a special container in your storage account at standard [blob pricing](https://azure.microsoft.com/pricing/details/storage/blobs/) cost. You can control the retention period of these files based on your requirements (See the [conditions](#conditions) of the current release). Change events are appended to the change feed as records in the [Apache Avro](https://avro.apache.org/docs/1.8.2/spec.html) format specification: a compact, fast, binary format that provides rich data structures with inline schema. This format is widely used in the Hadoop ecosystem, Stream Analytics, and Azure Data Factory.
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You can process these logs asynchronously, incrementally or in-full. Any number of client applications can independently read the change feed, in parallel, and at their own pace. Analytics applications such as [Apache Drill](https://drill.apache.org/docs/querying-avro-files/) or [Apache Spark](https://spark.apache.org/docs/latest/sql-data-sources-avro.html) can consume logs directly as Avro files, which let you process them at a low-cost, with high-bandwidth, and without having to write a custom application.

articles/storage/blobs/storage-blob-create-account-block-blob.md

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The BlockBlobStorage account kind lets you create block blobs with premium performance characteristics. This type of storage account is optimized for workloads with high transactions rates or that require very fast access times. This article shows how to create a BlockBlobStorage account by using the Azure portal, the Azure CLI, or Azure PowerShell.
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[!INCLUDE [updated-for-az](../../../includes/storage-data-lake-gen2-support.md)]
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For more information about BlockBlobStorage accounts, see [Azure storage account overview](https://docs.microsoft.com/azure/storage/common/storage-account-overview).
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## Prerequisites

articles/storage/blobs/storage-blob-immutable-storage.md

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For information about how to set and clear legal holds or create a time-based retention policy using the Azure portal, PowerShell, or Azure CLI, see [Set and manage immutability policies for Blob storage](storage-blob-immutability-policies-manage.md).
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[!INCLUDE [updated-for-az](../../../includes/storage-data-lake-gen2-support.md)]
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## About immutable Blob storage
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Immutable storage helps healthcare organization, financial institutions, and related industries—particularly broker-dealer organizations—to store data securely. Immutable storage can also be leveraged in any scenario to protect critical data against modification or deletion.

articles/storage/blobs/storage-blob-snapshots.md

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## About blob snapshots
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[!INCLUDE [updated-for-az](../../../includes/storage-data-lake-gen2-support.md)]
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A snapshot of a blob is identical to its base blob, except that the blob URI has a **DateTime** value appended to the blob URI to indicate the time at which the snapshot was taken. For example, if a page blob URI is `http://storagesample.core.blob.windows.net/mydrives/myvhd`, the snapshot URI is similar to `http://storagesample.core.blob.windows.net/mydrives/myvhd?snapshot=2011-03-09T01:42:34.9360000Z`.
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> [!NOTE]

articles/storage/blobs/storage-blob-soft-delete.md

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Azure Storage now offers soft delete for blob objects so that you can more easily recover your data when it is erroneously modified or deleted by an application or other storage account user.
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[!INCLUDE [updated-for-az](../../../includes/storage-data-lake-gen2-support.md)]
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## How soft delete works
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When enabled, soft delete enables you to save and recover your data when blobs or blob snapshots are deleted. This protection extends to blob data that is erased as the result of an overwrite.

articles/storage/blobs/storage-blob-static-website.md

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You can serve static content (HTML, CSS, JavaScript, and image files) directly from a storage container named *$web*. Hosting your content in Azure Storage enables you to use serverless architectures that include [Azure Functions](/azure/azure-functions/functions-overview) and other Platform as a service (PaaS) services.
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[!INCLUDE [updated-for-az](../../../includes/storage-data-lake-gen2-support.md)]
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> [!NOTE]
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> If your site depends on server-side code, use [Azure App Service](/azure/app-service/overview) instead.
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articles/storage/blobs/storage-custom-domain-name.md

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You can map a custom domain to a blob service endpoint or a [static website](storage-blob-static-website.md) endpoint.
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[!INCLUDE [updated-for-az](../../../includes/storage-data-lake-gen2-support.md)]
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> [!NOTE]
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> This mapping works only for subdomains (for example: `www.contoso.com`). If you want your web endpoint to be available on the root domain (for example: `contoso.com`), then you'll have to use Azure CDN. For guidance, see the [Map a custom domain with HTTPS enabled](#enable-https) section of this article. Because your going to that section of this article to enable the root domain of your custom domain, the step within that section for enabling HTTPS is optional.
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articles/storage/common/storage-disaster-recovery-guidance.md

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Azure Storage supports account failover (preview) for geo-redundant storage accounts. With account failover, you can initiate the failover process for your storage account if the primary endpoint becomes unavailable. The failover updates the secondary endpoint to become the primary endpoint for your storage account. Once the failover is complete, clients can begin writing to the new primary endpoint.
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[!INCLUDE [updated-for-az](../../../includes/storage-data-lake-gen2-support.md)]
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This article describes the concepts and process involved with an account failover and discusses how to prepare your storage account for recovery with the least amount of customer impact. To learn how to initiate an account failover in the Azure portal or PowerShell, see [Initiate an account failover (preview)](storage-initiate-account-failover.md).
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[!INCLUDE [updated-for-az](../../../includes/updated-for-az.md)]
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#### Storage account containing archived blobs
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Storage accounts containing archived blobs support account failover. Once failover is complete, to convert the account back to GRS or RA-GRS all archieved blobs need to be rehydrated to an online tier first.
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Storage accounts containing archived blobs support account failover. Once failover is complete, to convert the account back to GRS or RA-GRS all archived blobs need to be rehydrated to an online tier first.
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#### Storage resource provider
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---
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title: "include file"
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description: "include file"
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services: storage
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author: normesta
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ms.service: storage
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ms.topic: "include"
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ms.date: 03/13/2020
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ms.author: normesta
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ms.custom: "include file"
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---
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> [!NOTE]
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> This feature is not yet supported in accounts that have a hierarchical namespace (Azure Data Lake Storage Gen2). To learn more, see [Blob storage features available in Azure Data Lake Storage Gen2](https://docs.microsoft.com/azure/storage/blobs/data-lake-storage-supported-blob-storage-features).
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