Here is a detailed summary of the video transcription in markdown format, broken down into sections for better readability:
Background on 11 9s of Durability in Amazon S3
- Ian McGarry, Software Development Manager for Amazon S3, discusses the internal mechanisms and checks that Amazon S3 uses to achieve 11 9s of durability.
- S3 operates at a massive scale, with millions of drives and over 1 PB of data transfer per second.
- S3 has three core pillars to ensure durability: device failure, zone failure, and operational changes.
- Device failure is handled through integrity checks, data redundancy, and periodic durability auditing.
- Zone failure is handled by storing data across multiple availability zones, allowing S3 to tolerate the loss of an entire zone.
- S3 uses a robust DNS-based routing system to route around zone failures quickly, ensuring availability.
- S3 also has strong controls and guardrails in place, such as deployment restrictions and shadow mode testing, to mitigate the impact of operational changes.
- S3 started as a globally distributed service but later shifted to a regionally isolated architecture to improve performance and durability.
Beyond 11 9s: Data Protection in Amazon S3
- Data protection objectives: Protect against accidental deletes, overwrites, and lifecycle expirations; build resiliency against bad actors and regional issues; and meet governance and compliance requirements.
- Data protection and security are closely related, with features like IAM, MFA, and encryption providing benefits for both.
- The continuum of data protection includes:
- Versioning: Protects against overwrites and accidental deletes.
- MFA Delete: Adds an additional layer of protection for versioning.
- Object Lock: Enforces retention periods and legal holds for data.
- Cross-bucket, cross-account, and multi-region protection:
- S3 Replication: Replicates data across regions or accounts.
- Batch Operations: Enables bulk replication of existing data.
- Backup Solutions: Isolated, managed backups of S3 data.
- Auditing and monitoring features:
- Trusted Advisor: Identifies buckets without versioning enabled.
- AWS Config: Monitors changes to bucket configurations.
- S3 Storage Lens: Provides metrics and visibility into data protection settings.
Protecting Against Accidental Deletes, Overwrites, and Lifecycle Expirations
- Versioning protects against overwrites by creating a new version for each update, and delete markers instead of object deletions.
- Lifecycle rules can manage the retention of current and non-current versions.
- Conditional checks like
if-match
can prevent accidental overwrites.
- Cloud Trail can be used to monitor and audit changes to bucket configurations.
Cross-Region and Cross-Account Protection
- S3 Replication enables replication of data across regions or accounts, with options for delete marker replication, storage class selection, and cross-account replication.
- Replication provides fault tolerance and allows for quick recovery in the event of a regional outage.
- Batch Operations can be used to retroactively replicate existing data.
- Replication Time Control provides SLA-backed replication with event notifications.
- Backup Solutions, both AWS-managed and partner solutions, provide isolated and managed backups of S3 data.
Recap and Resources
- Key takeaways:
- Choose the right data protection features and make them the default.
- Audit and monitor for unexpected changes.
- Regularly review new features and updates.
- Additional resources:
- Skill Builder for training and learning opportunities.
- Customer surveys to provide feedback and help shape future improvements.