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Block and File Storage

Last Updated: 15th March, 2026

Amazon EBS and Amazon EFS

Explanation
Amazon Elastic Block Store (EBS) provides persistent block-level storage for EC2 instances. It is designed for low-latency and high-performance workloads such as databases and transactional systems. EBS volumes are attached to instances and retain data independently of the instance lifecycle. Amazon Elastic File System (EFS) is a fully managed file storage service that provides shared file systems accessible by multiple EC2 instances simultaneously. EFS automatically scales storage capacity and supports standard file system semantics, making it ideal for shared workloads.

Table

Storage TypePurpose
EBSPersistent block storage
EFSShared file storage
SSD VolumesHigh-performance workloads
HDD VolumesCost-effective storage

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Example
A database application runs on EC2 instances using EBS volumes for low-latency data access. At the same time, multiple application servers share configuration files stored in EFS. EBS ensures consistent performance for transactional data. EFS allows concurrent access without manual synchronization. The architecture simplifies storage management while meeting performance and scalability needs.

Use Cases
• Database and transactional workloads
• Shared application file systems
• Enterprise workloads
• Persistent storage for virtual servers

Module 4: AWS Storage ServicesBlock and File Storage

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