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Object replication in Azure Storage is a feature that enables you to automatically copy blobs from a source storage account to a destination storage account, either within the same Azure region or across different regions. This can be particularly useful for scenarios involving data availability, redundancy, and optimized data access for users in different geographical areas.
To configure object replication, you need to have two or more Azure Storage accounts, which could be in the same region or in different regions. Before you begin, you also need to make sure that the storage accounts are compatible with replication, which generally means they should be General-purpose v2 accounts.
Here’s a step-by-step outline to configure object replication:
An example of replication rules might involve only replicating blobs that have a certain prefix, such as ‘images/’. Suppose you have a container called ‘media’ with various files, and you want to replicate only the image files. Your rule could be set up like so:
Rule Name | Source Container | Destination Container | Prefix Match | Min Creation Time |
---|---|---|---|---|
ImageReplication | media | media-replica | images/ | (not set) |
In conclusion, configuring object replication in Azure involves setting replication policies and rules that align with your data redundancy and distribution needs. Careful planning and monitoring are crucial to maintain data consistency and control costs associated with storage and data transfer.
Answer: False
Explanation: Object replication is meant for replicating blobs across different storage accounts that may reside in different Azure regions, not within the same region.
Answer: Block Blobs, Append Blobs
Explanation: Currently, object replication supports block blobs and append blobs, but not page blobs, queues, or tables.
Answer: True
Explanation: Object replication requires the change feed to be enabled on both the source and the destination storage accounts.
Answer: Replication Policy
Explanation: Object replication is configured using a replication policy that defines the rules and relationship between the source and target storage accounts.
Answer: False
Explanation: Object replication only applies to new blobs or those that have been modified after the policy was enabled. Existing blobs must be copied over manually if needed.
Answer: Zone-redundant storage (ZRS)
Explanation: Object replication requires the source and target storage accounts to be in the same region if they are using LRS, GRS, or RA-GRS, but they can be in different regions if ZRS is used.
Answer: True
Explanation: Object replication policies can be set up to replicate blobs from multiple source containers to a single destination container in another storage account.
Answer: Prefix match
Explanation: You can define rules within a replication policy to replicate blobs that match certain name prefixes.
Answer: True
Explanation: The cost of object replication is based on replication data transfer, which includes both the amount of data and the number of operations.
Answer: Assign the Storage Blob Data Contributor role to the principal of the destination storage account
Explanation: To set up replication across subscriptions, the principal of the destination storage account needs permissions such as Storage Blob Data Contributor on the source account.
Answer: False
Explanation: Object replication is currently only available for Blob Storage and cannot be configured with Azure File Sync, which is used for file shares.
Answer: Azure Blob Storage versioning
Explanation: Blob Storage versioning must be turned on to use object replication, as it relies on the versioning of the blobs to replicate any changes.
Object replication in Azure Storage is the ability to automatically copy blobs or blob snapshots from a source storage account to a destination storage account.
Object replication can improve the availability and durability of data in the event of an outage or disaster. It can also provide better performance for distributed applications that require low latency.
There are two types of replication in Azure Storage read-access geo-redundant storage (RA-GRS) and geo-zone-redundant storage (GZRS).
RA-GRS replication asynchronously replicates data to a secondary region, where it is available for read access. If the primary region becomes unavailable, you can access the data from the secondary region.
GZRS replication synchronously replicates data to a secondary region within the same geographic region. This type of replication provides higher durability than RA-GRS.
You can enable object replication for a storage account by creating a replication policy that specifies the source and destination storage accounts, as well as the replication type.
Yes, you can create a replication policy that specifies which types of blobs or blob snapshots to replicate, such as only replicating block blobs or only replicating blobs with certain metadata.
The amount of time it takes for replicated data to become available in the destination region depends on the replication type and the size of the data. Generally, it can take several minutes to several hours.
You can monitor the status of object replication by viewing the replication status for each blob or by using Azure Monitor to view metrics such as replication latency and data transfer.
There are no hard limits to the amount of data that can be replicated, but there are practical limitations based on the size of the data and the available network bandwidth between the source and destination storage accounts.
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