Difference between AWS Storage Services
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In this read, we will take a good look at some of the differences between different AWS Storage Services i.e. S3, EBS, and EFS. Let’s get started.
| Attributes | Amazon S3 | Amazon EBS | Amazon EFS |
|---|---|---|---|
| Stands for Simple storage service | Stands for Elastic block store | Stands for Elastic file system | |
| Storage type | Object storage that can store any kind of data in any format | Persistent block-level storage for the EC2 instances | POSIX compliant file storage system for the EC2 instances |
| Feature(s) | Accessible to anyone or any service with the rightful permissions | Best for workloads that require lowest latency data access from the single EC2 instance | Provides a file system interface and concurrent accessible storage for the multiple EC2 instances |
| Maximum storage size | Unlimited | 16 TiB for single volumne | Unlimited system size |
| Maximum file size | Single S3 object can range in size from a minimum of 0 bytes to a maximum of 5 TB | Equivalent to the maximum size of the volumes | 47.9 TiB for a single file |
| Scalability | Highly scalable | Can manually increase or decrease the memory size. We can attach and detach additional volumes to and from EC2 instances to offer scalability | Elastic in nature and can automatically increase or decrease as we add or remove files |
| Availability | S3 standard - 99.99%, S3 standard IA - 99.9%, S3 OneZone IA - 99.5% | Has an availability of 99.99% | Offers no service level agreement and runs in multiple availability zones |
| Encryption methods | Supports SSL end-points using HTTPS, Client-side and Service side encryption (such as SSE-S3, SSE-C, or SSE-KMS) | Encryptes both data at rest and in transit through the EBS encryption that uses AWS Key management service - Client management keys | Encryptes both data at rest by using AWS key management service and in transit by using TLS 1.2 |
| Durability | Stored across multiple availability zones and offers the durability of 99.999999999% | Stored in a single availability zone | Stored in multiple availability zones |
| Access control | Uses bucket policies and IAM user policies. Has the Block Public Access feature to manage the global access to the bucket object(s) | IAM roles, policies, or Security groups | Resources that can access the mount point can access the file system |
| Backup and restoration | Offers to version or cross-region replication | Offers durable snapshot capabilities | Offer EFS to EFS replication through AWS DataSync service or any third party tools |
| Real-time example(s) | Best for web serving and content management media, backups, data lake, or big-data analytics | Suitable for boot volumes, transaction and NoSQL databases, data warehousing, and ETL operations | Best for database backups, containers, storage sets, web serving, etc. |
| Pricing | Based on the S3 bucket location | We pay a per-GB month of provisioned storage | We pay based on the amount of file system storage per month |
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