Storage Options on AWS - S3, EBS, Instance Storage & EFS

Friends,

In this post, I want to talk to you about different storage options on AWS. AWS gives us following types of storage options:

1. EBS: Think of it like a disc of your server. It is Block-level storage and hence most suitable for very fast read and write operations at the same time. E.g. OS, databases etc. These are connect over network to the EC2 instances (like SAN).
2. Instance Storage:This is again block level disc with your EC2 instances, but they are local on the physical host. These are non-persistent discs.
3. EFS: This is available as an equivalent of NFS. You can mount an EFS to multiple EC2 instances.
4. S3: Object level storage. Objects (files) are accessed via their keys. This is suitable for storing files which can be accessed by an application via AWS API. Do not use this as a disc or mount it to EC2 instances.
5. Glacier: This is the archival service from AWS. Instead of doing archival on tapes (on-premises), you may choose to archive to Glacier. It is cheapest form of storage. A video on Glacier is coming soon. 

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