Changing the feed in the storage of blob objects - Azure Storage (2023)

  • Article

The purpose of the change feed is to provide transaction logs of all changes made to blobs and blob metadata in your storage account. The change feed providesordered,Guaranteed,constant,immutable,read onlyA log of these changes. Client applications can read these records at any time, either in streaming or batch mode. Each change generates exactly one transaction log entry, so you don't need to maintain multiple log entries for the same change. With a change feed, you can create efficient and scalable solutions that cost-effectively handle change events that occur in your blob storage account.

For information on processing records in the change feed, seeA feed of process changes in Azure Blob Storage.

How the change feed works

Change feed records are saved ascorpsesby default in a dedicated container in your storage accountblob pricescosts. You can control the storage period of these files according to your needs (seeConditionscurrent version). Change events are attached as records in the change feedApache AvroFormat Specification: A compact, fast binary format that provides rich data structures with built-in schema. This format is commonly used in the Hadoop ecosystem, Stream Analytics, and Azure Data Factory.

You can process these logs asynchronously, incrementally, or in full. Any number of client applications can read the change feed independently, in parallel, and at their own pace. Analytics applications such asApache drillorApache Sparkcan consume records directly as Avro files, allowing you to process them cheaply and at high throughput without having to write a custom application.

The following diagram shows how records are added to the change feed:

Changing the feed in the storage of blob objects - Azure Storage (1)

Support for change feeds is suitable for scenarios where data is processed based on changed objects. Applications can, for example:

  • Update secondary index, sync with cache, search engine or other content management scenarios.
  • Extract business analytics insights and metrics based on changes made to your objects in streaming or batch mode.
  • Store, audit and analyze changes to your objects over any period of time to ensure security, compliance or enterprise data management information.
  • Build solutions to backup, mirror or replicate the state of objects in your disaster management or compliance account.
  • Build connected application pipelines that respond to change events, or schedule executions based on created or changed objects.

Changing the feed is a requirement forobject replicationIInstant recovery for blemish block.


The changelog provides a persistent, ordered, historical model of changes made to a blob. Changes are logged within minutes of the change and become available in your change feed log. If your application needs to react much faster to events, consider using itBlob data storage eventsinstead of this.Blob storage eventsIt provides one-off real-time events that allow your Azure functions or applications to quickly react to changes that occur in the blob.

(Video) Azure Storage Undelete Options

Enable and disable feed switching

You must enable changes on your storage account to start recording and record changes. Disable the change feed to stop changes being recorded. You can enable and disable changes using Azure Resource Manager templates in the portal or PowerShell.

Keep the following in mind when you enable the change feed.

  • There is only one change feed for the blob service in each storage account. Change feed records are stored in the$blobchangefeedContainer.

  • Create, update, and delete changes are logged only at the blob service level.

  • The feed changes recordsalreadychange for all available events that occur on the account. Client applications can filter event types as needed. (LookConditionscurrent version).

  • Only Standard General Purpose v2, Premium Block Blob and Blob Storage accounts can enable change feed. Hierarchical namespace enabled accounts are not currently supported. Version 1 general-purpose storage accounts are not supported, but can be upgraded to version 2 general-purpose storage accounts non-disruptively, seeUpgrade to a GPv2 storage accountfor more information.

  • Portal
  • Azure CLI
  • Power Shell
  • Presentation

Enable a change feed for your storage account through the Azure portal:

  1. imAzure-Portal, select your storage account.

  2. Navigate todata protectionoption belowdata management.

  3. Under, underpersecution, chooseEnable blob change feed.

  4. ChooseSave on computerPress the button to confirm the privacy settings.

    Changing the feed in the storage of blob objects - Azure Storage (2)

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Consume a change of food

The change feed produces several metadata and log files. These files are in the$blobchangefeedAccount container for storage. The$blobchangefeedThe container can be viewed either through the Azure portal or through the Azure Storage Explorer.

Your client applications can consume the change feed using the blob change feed processor library provided with the change feed processor SDK. For information on processing records in the change feed, seeProcess change feed logs in Azure Blob Storage.

Change feed segments

The change summary is a log of organized changescompany sectionbut it is added and updated every few minutes. These segments are created only when blob change events occur that hour. This allows your client application to process changes that occur within specific time periods without having to search the entire log. For more information seetechnical data.

An available hourly change feed segment is described in a manifest file that lists the paths to the change feed files for that segment. List of$blobchangefeed/idx/segmenti/The virtual directory displays these segments in chronological order. The path of a segment describes the beginning of the hourly time range that the segment represents. You can use this list to filter the log segments that interest you.

Name Blob-Typ Länge der Blob-Ebene Inhaltstyp --------------------------------------- ------ -- ------------- ----------- ----------- ------- - ----- -----------$blobchangefeed/idx/segments/1601/01/01/0000/meta.json BlockBlob 584 application/json$blobchangefeed/ idx/segments/2019/02 /22/1810/meta .json BlockBlob 584 application/json$blobchangefeed/idx/segments/2019/02/22/1910/meta.json BlockBlob 584 application/json$blobchangefeed/idx/segments/ 02/23/2019/0110/meta .json BlockBlob 584 application/ json


The$blobchangefeed/idx/segments/1601/01/01/0000/meta.jsonit is created automatically when you activate the change feed. Feel free to ignore this file. It is always an empty initialization file.

Datoteka manifesta segmenta (meta.json) shows the path of the change feed files for this segment inchunkFilePathsProperty. Here is an example of a segment manifest file.

{ „version“: 0, „begin“: „2019-02-22T18:10:00.000Z“, „intervalSecs“: 3600, „status“: „Abgeschlossen“, „config“: { „version“: 0, „ configVersionEtag“: „0x8d698f0fba563db“, „numShards“: 2, „recordsFormat“: „avro“, „formatSchemaVersion“: 1, „shardDistFnVersion“: 1 }, „chunkFilePaths“: [ „$blobchangefeed/log/00/2019/02 /22/1810/", "$blobchangefeed/log/01/2019/02/22/1810/" ], "storageDiagnostics": { "verzija": 0, "lastModifiedTime": "2019-02-22T18:11: 01.187Z“, „podaci“: { „pomoć“: „55e507bf-8006-0000-00d9-ca346706b70c“ } }}


The$blobchangefeedThe container will only appear after you enable the feed switching feature in your account. After you enable the change feed, you have to wait a few minutes before you can print the blobs in the container.

Changing event records

Change feed files contain a series of change event records. Each change event record corresponds to a single blob change. Records are serialized and written to a file usingApache Avroformat specification. Records can be read using the Avro file format specification. Several libraries are available to process files in this format.

Change feed files are stored in the$blobchangefeed/log/virtual directory asadd specks. The first change feed file under each track has00000in the file name (eg00000.avro). The name of each subsequent log file added to this path is incremented by 1 (example:00001.avro).

(Video) Azure Storage Part-1 (Blob Container)

Event record schemes

For a description of each property, seeAzure Event Grid event schema for storing blob objects. The BlobPropertiesUpdated and BlobSnapshotCreated events are currently exclusive to change feeds and are not yet supported for Blob Storage events.


Change feed files for a segment do not appear immediately after the segment is created. The length of the delay is within the normal change feed posting latency interval, which is within minutes of the change.

Schema version 1

The following types of events can be logged in schema version 1 change feed logs:

  • BlobCreated
  • Blob deleted
  • Blob PropertiesUpdated
  • BlobSnapshotErstellt

The following example shows a change event log in JSON format using version 1 of the event schema:

{ "schemaVersion": 1, "topic": "/subscriptions//resourceGroups//providers/Microsoft.Storage/storageAccounts/“, „subject“: „/blobServices/ default/containers//corpse/", "eventType": "BlobCreated", "eventTime": "2022-02-17T12:59:41.4003102Z", "id": "322343e3-8020-0000 -00fe-233467066726", "data": { "api ": "PutBlob", "clientRequestId": "f0270546-168e-4398-8fa8-107a1ac214d2", "requestId": "322343e3-8020-0000-00fe-233467000000 " , „etag“: „0x8D9F2155CBF792 8“, „contentType“: „application/octet-stream“, „contentLength“: 128, „blobType“: „BlockBlob“, „url“: „“ , „sequencer“: „00000000000000010000000000000002000000000000001d“, „storageDiagnostics “: { „ponuda“: „9d725a00-8006-0000-00fe-233467000000“, „seq“: „(2,18 446744073709551615,29,29)“, „sid“: "4cc94e71-f6be-75bf-e7b2-f9ac41458e5a" } }}

Scheme version 3

The following types of events can be logged in schema version 3 change feed logs:

  • BlobCreated
  • Blob deleted
  • Blob PropertiesUpdated
  • BlobSnapshotErstellt

The following example shows a change event log in JSON format using version 3 of the event schema:

{ „schemaVersion“: 3, „topic“: „/subscriptions//resourceGroups//providers/Microsoft.Storage/storageAccounts/“, „subject“: „/blobServices/ default/containers//corpse/", "eventType": "BlobCreated", "eventTime": "2022-02-17T13:05:19.6798242Z", "id": "eefe8fc8-8020-0000 -00fe-23346706daaa", "data": { "api ": "PutBlob", "clientRequestId": "00c0b6b7-bb67-4748-a3dc-86464863d267", "requestId": "eefe8fc8-8020-0000-00fe-233467000000" , „etag“: „0x8D9F216266170DC “, „contentType”: „application/octet-stream“, „contentLength“: 128, „blobType“: „BlockBlob“, „url“: „“ , „sequencer“: „00000000000000010000000000000002000000000000001d“, „ prethodnaInfo“: { „SoftDeleteSnapshot“: „2022-02-17T13:08:42.4825913Z“, „WasBlobSoftDeleted“: „true“, „BlobVersion“: „2024-02-17T16: 11:52.0781797Z“, „LastVersion“: „2022- 02-17T16:11:52.0781797Z“, „PreviousTier“: „Hot“ }, „snapshot“: „2022-02-17T16:09:16.7261278Z“, „ blobPropertiesUpdated“ : { „ContentLanguage“ : { „current“ : „pl-Pl“, „ prethodni“ : „nl-NL“ }, „CacheControl“ : { „trenutni“ : „max-age=100“, „ prethodni“ : „max-age=99“ }, „ContentEncoding“ : { „trenutni“ : „gzip, Identitet“, „ prethodni“ : „gzip“ }, „ContentMD5“ : { „trenutni“ : „Q2h1Y2sgSW51ZwDIAXR5IQ==", „ prethodni“ : „Q2h1Y2sgSW=" }, „ContentDisposition" : { „current“ : „attachment“, „ previous“ : „“ }, „ContentType“ : { „current“ : „application/json“, „ previous“ : „ application/octet-stream" } }, "storageDiagnostics": { "ponuda": "9d726370-8006-0000-00ff-233467000000", "seq": "(2,18446744073709551615,29,29)", "sid": "4cc94e71-f6be-75bf-e7b2-f9ac41458e5a" } } }

Scheme version 4

The following types of events can be logged in schema version 4 change feed logs:

  • BlobCreated
  • Blob deleted
  • Blob PropertiesUpdated
  • BlobSnapshotErstellt
  • BlobTierChanged
  • BlobAsyncOperationInitiated
  • RestorePointMarkerCreated

The following example shows a change event log in JSON format using version 4 of the event schema:

{ „schemaVersion“: 4, „topic“: „/subscriptions//resourceGroups//providers/Microsoft.Storage/storageAccounts/“, „subject“: „/blobServices/ default/containers//corpse/", "eventType": "BlobCreated", "eventTime": "2022-02-17T13:08:42.4835902Z", "id": "ca76bce1-8020-0000 -00ff-23346706e769", "data": { "api ": "PutBlob", "clientRequestId": "58fbfee9-6cf5-4096-9666-c42980beee65", "requestId": "ca76bce1-8020-0000-00ff-233467000000" , „etag“: „0x8D9F2169F42D701“, „contentType“: „application/octet-stream“, „contentLength“: 128, „blobType“: „BlockBlob“, „blobVersion“: „2022-02-17T16:11:52.5901564Z ", "containerVersion": "00000000000000001", "blobTier" : "Arhiva", "url": "", "sequencer": "00000000000000010000000000000002000000000000001d", " previousInfo ": { "SoftDeleteS Nickerchen" : „2022-02-17T13:08:42.4 825913Z “, „WasBlobSoftDeleted“: „true“, „BlobVersion“: „2024-02-17T16:11:52.0781797Z“, „LastVersion“: „2022-02-17T16: 11:52.0781797Z“, „PreviousTier“: „Hot “ }, „snapshot“: „2022-02-17T16:09:16.7261278Z“, „blobPropertiesUpdated“ : { „ContentLanguage“ : { „current“ : „pl-Pl ", " previous ": "nl-NL" } , "CacheControl" : { "trenutni" : "max-age=100", " prethodni" : "max-age = 99" }, "ContentEncoding" : { "trenutni" : "gzip, Identitet", " prethodni " : "gzip" }, "ContentMD5" : { "trenutni" : "Q2h1Y2sgSW51ZwDIAXR5IQ==", " prethodni " : "Q2h1Y2sgSW=" }, "ContentDisposition" : { "trenutni" : „privitak“, „ prethodni“ : „“ } , „ContentType“ : { „current“ : „application/json“, „ previous“ : „application/octet-stream“ } }, „asyncOperationInfo“: { „DestinationTier“ : „Hot“, „WasAsyncOperation“: „true“ , „CopyId“: „copyId“ }, „storageDiagnostics“: { „bid“: „9d72687f-8006-0000-00ff-233467000000“, „seq“: „(2 ,18446744073709551615,29,29)", "sid" : "4cc94e71-f6be-75bf-e7b2-f9ac41458e5a" } }}

Scheme version 5

The following types of events can be logged in schema version 5 change feed logs:

  • BlobCreated
  • Blob deleted
  • Blob PropertiesUpdated
  • BlobSnapshotErstellt
  • BlobTierChanged
  • BlobAsyncOperationInitiated

The following example shows a change event log in JSON format that uses the version 5 event schema:

{ „schemaVersion“: 5, „topic“: „/subscriptions//resourceGroups//providers/Microsoft.Storage/storageAccounts/“, „subject“: „/blobServices/ default/containers//corpse/", "eventType": "BlobCreated", "eventTime": "2022-02-17T13:12:11.5746587Z", "id": "62616073-8020-0000 -00ff-233467060cc0", "data": { "api ": "PutBlob", "clientRequestId": "b3f9b39a-ae5a-45ac-afad-95ac9e9f2791", "requestId": "62616073-8020-0000-00ff-233467000000" , „etag“: „0x8D9F2171BE32588“, „ contentType": „application/octet-stream“, „contentLength“: 128, „blobType“: „BlockBlob“, „blobVersion“: „2022-02-17T16:11:52.5901564Z ", "containerVersion": "00000000000000001", "blobTier" : "Arhiva", "url": "", "sequencer": "00000000000000010000000000000002000000000000001d", " previousInfo ": { "SoftDeleteS Nickerchen" : „2022-02-17T13:12:11.5 726507Z “, „WasBlobSoftDeleted“: „true“, „BlobVersion“: „2024-02-17T16:11:52.0781797Z“, „LastVersion“: „2022-02-17T16: 11:52.0781797Z“, „PreviousTier“: „Vruće " }, "snimak" : "2022-02-17T16:09:16.7261278Z", "blobPropertiesUpdated" : { "ContentLanguage" : { "trenutni" : "pl-Pl ", " prethodni ": "nl-NL" } , "CacheControl" : { "trenutni" : "max-age=100", " prethodni" : "max-age = 99" }, "ContentEncoding" : { "trenutni" : "gzip, Identitet", " prethodni " : "gzip" }, "ContentMD5" : { "trenutni" : "Q2h1Y2sgSW51ZwDIAXR5IQ==", " prethodni " : "Q2h1Y2sgSW=" }, "ContentDisposition" : { "trenutni" : „privitak“, „ prethodni“ : „“ } , „ContentType“ : { „current“ : „application/json“, „ previous“ : „application/octet-stream“ } }, „asyncOperationInfo“: { „DestinationTier“ : „Hot“, „WasAsyncOperation“: „true“ , „CopyId“: „copyId“ }, „blobTagsUpdated“: { „ prethodni“: { „Tag1“: „Value1_3“, „Tag2“: „Value2_3“ }, „ current": { "Tag1": "Value1_4", "Oznaka2": "Value2_4" } }, "restorePointMarker": { "rpi": "cbd73e3d-f650-4700-b90c-2f067bce639c", "rpp": "cbd73e3d-f650-4700-b90c-2f067bce639c", "rpl" : "test-restore-label", "rpt": "2022-02-17T13:56:09.3559772Z" }, "storageDiagnostics": { "bid": "9d726db1 -8006-0000-00ff-233467000000", "seq ": "(2,18446744073709551615,29,29)", "sid": "4cc94e71-f6be-75bf-e7b2-f9ac41458e5a" } }}

technical data

  • Change event records are only added to the change feed. Once these records are added, they are immutable and the record position is stable. Client applications can maintain their own checkpoint at the position of reading the change feed.

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  • Change event records are added within minutes of the change. Client applications can choose to consume records as they are added for streaming access or in bulk at some other time.

  • Change event records are sorted by change orderafter the corpse. The order of changes in blobs is not defined in Azure Blob Storage. Any changes in the previous segment take precedence over any changes in the following segments.

  • Change event records are serialized to a log file usingApache Avro 1.8.2format specification.

  • Modify the event logs where it isevent typehas a value ofcontrolare internal system records and do not represent a change to any object in your account. You are free to ignore these records.

  • values ​​inmemory diagnosticsThe asset bag is for internal use only and is not intended for use in your application. Your applications should not be contractually dependent on this data. Feel free to ignore these features.

  • The time represented by the segment isapproximatelywith 15 minute limits. To ensure that all records are consumed within the given time, consume a consecutive segment of the previous and next hour.

  • Each segment can have a different numberchunkFilePathsdue to internal partitioning of the log stream to manage publication throughput. Diaries in eachchunkFilePathare guaranteed to contain mutually exclusive blobs and can be consumed and processed in parallel without breaking the order of changes per blob during iteration.

  • Segments start atpublicationStatus. This is the case after adding records to the segment is completeFinished. Log files in each segment dated by dateLast Consumableproperty in$blobchangefeed/meta/Segments.jsonThe file should not be used in your application. Here's an exampleLast Consumableownership in one$blobchangefeed/meta/Segments.jsonFile:

{ "verzija": 0, "lastConsumable": "2019-02-23T01:10:00.000Z", "storageDiagnostics": { "verzija": 0, "lastModifiedTime": "2019-02-23T02:24:00.556Z ", "data": { "aid": "55e551e3-8006-0000-00da-ca346706bfe4", "lfz": "2019-02-22T19:10:00.000Z" } }}

Conditions and known issues

This section describes known issues and conditions in the current version of the change feed.

  • TheURLThe log file property is currently always empty.
  • TheLast ConsumableThe segments.json file property does not specify the first segment that the change feed finalizes. This problem occurs only after the first segment is completed. All subsequent segments after the first hour were accurately recordedLast ConsumableProperty.
  • You can't see this right now$blobchangefeedContainer when calling the ListContainers API. You can view the content by calling the ListBlobs API directly on the $blobchangefeed container.
  • Storage account redirectionnot supported for accounts with change feed enabled. Disable the change feed before starting failover.
  • Storage accounts that have previously run oneKonto-FailoverThere may be issues with not displaying the log file. Future account upgrades may also affect the log file.
  • You may see 404 (Not Found) and 412 (Prerequisite Failed) errors$blobchangefeedI$blobchangefeedsysContainer. Feel free to ignore these errors.

feature support

Support for this feature may be affected by enabling Data Lake Storage Gen2, Network File System (NFS) 3.0, or SSH File Transfer Protocol (SFTP).

If you have enabled any of these features, read onSupport for the Blob Storage feature in Azure Storage accountsto evaluate support for this feature.


What is the difference between a change feed and Storage Analytics logging?

Analytics logs contain records of all read, write, list, and delete operations with successful and failed requests for all operations. Analysis protocols are best-effort protocols and the order is not guaranteed.

Change Feed is a solution that provides a transactional log of successful mutations or changes in your account, eg B. Creating, modifying and deleting blocks. The change feed ensures that all events are logged and displayed in the order of successful changes per blob, so you don't have to filter out the distractions of a large volume of reads or failed requests. The change feed is fundamentally designed and optimized for application development that requires certain safeguards.

(Video) Azure Storage Account - Azure Blob Storage Snapshots

Should I use feed switching or store events?

You can use both functions as a feed changer andBlob data storage eventsProvide the same information with the same guarantee of delivery reliability, the main difference being the latency, ordering and storage of event recordings. The change feed publishes entries to the log within minutes of a change and also guarantees the order of change operations per blob. Storage events are broadcast in real time and cannot be ordered. Change feed events are permanently stored in your storage account as persistent read-only logs with your defined retention, while storage events are transient and consumed by the event handler unless you specifically store them. With a change feed, any number of your applications can freely consume logs using the blob API or SDKs.

Next steps

  • See an example of reading a change feed using a .NET client application. SeeProcess change feed logs in Azure Blob Storage.
  • Learn how to react to events in real time. SeeRespond to Blob Storage events
  • Learn more about detailed logging data for successful and failed operations for all requests. SeeAzure Storage analytics logging


What are the characteristics of change feed in Azure blob storage? ›

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.

How do I change the access level in Azure blob storage? ›

To update the default access tier for an existing storage account in the Azure portal, follow these steps:
  1. Navigate to the storage account in the Azure portal.
  2. Under Settings, select Configuration.
  3. Locate the Blob access tier (default) setting, and select either Hot or Cool. ...
  4. Save your changes.
May 3, 2023

How do I change my blob type in Azure? ›

In Azure Storage you can not change the blob type for an existing file. Some people recommends download the files and upload again. But you can also use azcopy from the Cloud Shell in the Azure portal. At least in PowerShell the azcopy utility is available.

How do I change storage redundancy in Azure? ›

To change the redundancy option for your storage account in the Azure portal, follow these steps:
  1. Navigate to your storage account in the Azure portal.
  2. Under Data management select Redundancy.
  3. Update the Redundancy setting.
  4. Select Save.
Mar 9, 2023

What is Azure change feed? ›

Change feed in Azure Cosmos DB is a persistent record of changes to a container in the order they occur. Change feed support in Azure Cosmos DB works by listening to an Azure Cosmos DB container for any changes. It then outputs the sorted list of documents that were changed in the order in which they were modified.

Which store the data from which the change feed is generated? ›

The monitored container: The monitored container has the data from which the change feed is generated. Any inserts and updates to the monitored container are reflected in the change feed of the container.

How do I change the tier of multiple blobs in Azure? ›

Simply select the Azure Blobs you want to change the Tiering of, using control and a left click of the mouse to select multiple individual Blobs, or press Control and A to select them all.

How do I change my storage account from v1 to v2 in Azure? ›

  1. Sign in to the Azure portal.
  2. Navigate to your storage account.
  3. In the Settings section, select Configuration.
  4. Under Account kind, select on Upgrade.
  5. Under Confirm upgrade, enter the name of your account.
  6. Select Upgrade at the bottom of the blade.
Mar 9, 2023

How do I move a blob from one container to another in Azure? ›

Copy all containers, directories, and blobs to another storage account by using the azcopy copy command. This example encloses path arguments with single quotes (''). Use single quotes in all command shells except for the Windows Command Shell (cmd.exe).

How many types of blob storage are there? ›

The storage service offers three types of blobs, block blobs, append blobs, and page blobs.

What is the maximum size of blobs in Azure? ›

Scale targets for Blob storage
Maximum size of single blob containerSame as maximum storage account capacity
Maximum number of blocks in a block blob or append blob50,000 blocks
Maximum size of a block in a block blob4000 MiB
Maximum size of a block blob50,000 X 4000 MiB (approximately 190.7 TiB)
7 more rows
Apr 2, 2023

How to modify an Azure storage account by setting a custom domain to it? ›

  1. In the Azure portal, go to your storage account.
  2. In the menu pane, under Security + networking, select Networking.
  3. In the Networking page, choose the Custom domain tab. Note. ...
  4. In the Domain name text box, enter the name of your custom domain, including the subdomain. ...
  5. To register the custom domain, choose the Save button.
Mar 9, 2023

What are the different types of redundancy in Azure? ›

Azure managed disks offer two storage redundancy options, zone-redundant storage (ZRS), and locally redundant storage. ZRS provides higher availability for managed disks than locally redundant storage (LRS) does.

Can we change disk type in Azure? ›

There are four disk types of Azure managed disks: Azure ultra disks, premium SSD, standard SSD, and standard HDD. You can switch between premium SSD, standard SSD, and standard HDD based on your performance needs.

Which method of the container class is used to create a new change feed estimator? ›

The correct way to initialize an estimator to measure that processor would be using GetChangeFeedEstimatorBuilder like so: ChangeFeedProcessor changeFeedEstimator = monitoredContainer . GetChangeFeedEstimatorBuilder("changeFeedEstimator", Program.

How do I delete a feed in Azure Devops? ›

You may restore the feed to its original state, or permanently delete it in the feed settings to clean up storage. This feed name may not be reused until permanently deleted. Please go to Deleted feed's Feed Settings,then click Permanently Delete Feed button.

Which device is used to feed the data? ›

Keyboard is the most common and very popular input device which helps to input data to the computer.

Which input device is used to feed data? ›

The most common input devices are the keyboard, mouse, and touch screen.

What is the process of feeding data into the computer called? ›

Data going into the computer is called Input .

What is the difference between file storage and blob storage? ›

Azure File Storage and Blob Storage offer the same level of redundancy, but Azure Blob Storage is cheaper than File Storage. Azure File Storage provides the folder for the data storage, while Azure Blob Storage does not provide the folder. They give a flat structure for data storage.

What are the 5 types of storage in Azure? ›

Most organizations will use more than one type of storage.
  1. Azure Blob Storage. Blob is one of the most common Azure storage types. ...
  2. Azure Files. Azure Files is Microsoft's managed file storage in the cloud. ...
  3. Azure Queue Storage. ...
  4. Azure Table. ...
  5. Azure Managed Disks.
Apr 19, 2022

What is the difference between Azure disk storage and Azure blob? ›

What is the difference between blob and file storage? Azure Blob Storage is an object store used for storing vast amounts unstructured data, while Azure File Storage is a fully managed distributed file system based on the SMB protocol and looks like a typical hard drive once mounted.

What are the three types of storage tiers for Azure blob storage? ›

Azure offers three storage tiers to store data in blob storage: Hot Access tier, Cool Access tier, and Archive tier.

How do I change the container name in Azure blob? ›

Go to storage explorer and connect your storage account with connection strings and then follow these steps:
  1. Expand the Storage accounts.
  2. Expand your storage account.
  3. Click on Blob Containers.
  4. Right-click on your container that you want to rename.
  5. Select Rename from the menu. Please log in or register to add a comment.
Jul 6, 2019

How can you easily move files stored in Azure blob storage between storage tiers? ›

Copy Blobs with Azure Storage Explorer
  1. Go to the Azure portal.
  2. Open the Storage Account that contains the Blobs.
  3. Navigate to the Data migration menu.
  4. Click on the "Browse data migration tools" button. This will show all the options to migrate or move data in Azure Storage.
May 17, 2022

What is the difference between general purpose V1 and V2 in Azure? ›

General Purpose v1 is still available for creation but now offers a subset of the options available from General Purpose v2. It provides all the data services like General Purpose v2 but does not have all the replication options or access tiers.

What is the difference between GPv1 and GPv2 in Azure storage account? ›

GPv2: Basic storage account type for blobs, files, queues, and tables. Use GPv2 for most scenarios using Azure Storage. GPv1: Legacy account type for blobs, files, queues, and tables. Use GPv2 accounts instead when possible.

What is the difference between general purpose V1 and V2? ›

The general-purpose V1 storage account is similar to the V2 account. This legacy type account can also host blobs, files, queues, and tables. While a general-purpose V1 account offers similar functionality to the V2 accounts, Microsoft recommends using the general-purpose V2 account instead.

How do I move files from one blob to another? ›

Click on the ... to the right of the Files box, select one or multiple files to upload from the file system and click Upload to begin uploading the files. To download data, selecting the blob in the corresponding container to download and click Download.

How to move files from one folder to another in Azure storage? ›

How to use this solution template
  1. Go to the Move files template. ...
  2. Select existing connection or create a New connection to your destination file store where you want to move files to.
  3. Select Use this template tab.
  4. You'll see the pipeline, as in the following example:
Sep 23, 2022

What are the characteristics of Azure blob storage? ›

Blob Storage is designed for:
  • Serving images or documents directly to a browser.
  • Storing files for distributed access.
  • Streaming video and audio.
  • Writing to log files.
  • Storing data for backup and restore, disaster recovery, and archiving.
  • Storing data for analysis by an on-premises or Azure-hosted service.
Mar 28, 2023

Which characteristics are benefits of Azure blob storage? ›

Azure Blob Storage helps you create data lakes for your analytics needs, and provides storage to build powerful cloud-native and mobile apps. Optimize costs with tiered storage for your long-term data, and flexibly scale up for high-performance computing and machine learning workloads.

What are the three primary characteristics of Azure that are specifically mentioned in an SLA? ›

Three key characteristics of SLAs for Azure products and services:
  • Performance Targets. Specific to each Azure product and service. ...
  • Uptime and Connectivity Guarantees. 📝 Monthly Uptime % = (Maximum Available Minutes-Downtime) / Maximum Available Minutes X 100. ...
  • 📝 Service credits.


1. Azure Blob Storage - Azure Blob Storage Tutorial - Step by Step
(Scott Duffy @ GetCloudSkills)
2. AZ-204 Part 2 - Develop for Azure storage (15-20%) Study Cram
(Abdullah Abu-Hassan)
3. Blob Point-in-Time Restore Deep Dive
(John Savill's Technical Training)
4. How to use Azure Blob Storage with .Net 6 | Azure Blob Storage Tutorial
(Israel Quiroz)
5. Azure Storage Blob fundamentals
6. Azure Storage Account Creating | Lecture 40
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