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Amazon Elastic Block Store (EBS) now adds full snapshot size information in Console and API

Posted on: Feb 13, 2025

Amazon EventBridge Event Bus now allows you to deliver events directly to Amazon Web Services services in another account. This feature enables you to use multiple accounts to improve security and streamline business processes while reducing the overall cost and complexity of your architecture.  

Amazon EventBridge Event Bus is a serverless event broker that enables you to create scalable event-driven applications by routing events between your own applications, third-party SaaS applications, and other Amazon Web Services services. This launch allows you to directly target services in another account, without the need for additional infrastructure such as an intermediary EventBridge Event Bus or Lambda function, simplifying your architecture and reducing cost. For example, you can now route events from your EventBridge Event Bus directly to a different team's SQS queue in a different account. The team receiving events does not need to learn about or maintain EventBridge resources and simply needs to grant IAM permissions to provide access to the queue. Events can be delivered cross-account to EventBridge targets that support resource-based IAM policies such as Amazon SQS, Amazon Lambda, Amazon Kinesis Data Streams, Amazon SNS, and Amazon API Gateway.

Direct delivery to cross-account targets is now available in Amazon Web Services China (Beijing) Region, operated by Sinnet, and Amazon Web Services China (Ningxia) Region, operated by NWCD. To learn more, please read our blog post or visit our documentation. Pricing information is available on the EventBridge pricing page.

Since EBS Snapshots are incremental in nature, if you take multiple snapshots of a volume over time, each snapshot only stores the new or modified blocks while maintaining references to unchanged blocks from previous snapshots. The ‘full snapshot size’ field shows you the total size of all blocks that make up a snapshot, including both the blocks stored directly in that snapshot and all blocks referenced from previous snapshots. For instance, if you have a 100 GB volume with 50 GB of data, the ‘full snapshot size’ would show 50 GB regardless of whether it's the first snapshot or a subsequent one.  

The ‘full snapshot size’ field provides crucial information about your EBS snapshot storage, such as the total size of the snapshot in the archived tier or the amount of data written to the source volume at the time the snapshot was created. Please note that this is different from the incremental snapshot size, which only refers to the size of newly changed blocks stored in that specific snapshot.

This feature is now generally available in Amazon Web Services China (Beijing) Region, operated by Sinnet and Amazon Web Services China (Ningxia) Region, operated by NWCD. To get started, see the EBS Snapshots user guide and API specification.