How does AWS storage work, and what options are available?
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Amazon Web Services (AWS) offers a range of storage solutions designed to meet various use cases—whether you need scalable object storage, block storage for EC2 instances, or high-performance file systems. Here's a breakdown of how AWS storage works and the primary options available:
How AWS Storage Works
At a high level, AWS storage solutions provide scalable, durable, and secure environments for data. AWS handles the underlying infrastructure, including replication, availability, encryption, and lifecycle management.
You can access AWS storage:
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Directly via AWS Console
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Programmatically through SDKs/APIs
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Using CLI tools
AWS Storage Options
1. Amazon S3 (Simple Storage Service)
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Type: Object storage
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Use cases: Backup, media hosting, data lakes, static websites, big data analytics
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Key features:
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Virtually unlimited storage
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Tiered storage classes (Standard, Infrequent Access, Glacier, etc.)
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Lifecycle policies
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High durability (99.999999999%)
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2. Amazon EBS (Elastic Block Store)
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Type: Block storage
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Use cases: Attached to EC2 instances for OS, databases, and applications
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Key features:
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SSD and HDD volume types (e.g., gp3, io2)
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Snapshots for backup
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Encryption and IOPS provisioning
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3. Amazon EFS (Elastic File System)
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Type: File storage
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Use cases: Shared file systems across multiple EC2 instances, lift-and-shift apps
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Key features:
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Fully managed NFS-based file system
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Scales automatically
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Pay-as-you-go
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4. Amazon FSx
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Type: File storage
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Use cases: Windows-based applications, HPC, ML workloads
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Variants:
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FSx for Windows File Server (SMB protocol)
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FSx for Lustre (high performance for compute-intensive workloads)
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FSx for NetApp ONTAP (advanced data management)
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5. Amazon Glacier / S3 Glacier Deep Archive
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Type: Archival storage (part of S3)
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Use cases: Long-term data archiving and compliance
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Key features:
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Low cost
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Retrieval times from minutes to hours
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Ideal for infrequently accessed data
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6. AWS Storage Gateway
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Type: Hybrid cloud storage
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Use cases: Connect on-premises environments to AWS
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Gateway types:
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File Gateway
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Volume Gateway
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Tape Gateway
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7. Amazon Backup
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Type: Centralized backup service
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Use cases: Automating backup across AWS services (EBS, RDS, DynamoDB, etc.)
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Key features:
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Policy-based backup management
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Compliance and audit support
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