Storage - INTRO

Storage consists of four different components:

S3 - Simple Storage Service

Virtual Disk in the cloud to store objects (docs/files/text files/movies etc). Not to install a DB, an application, a computer game. This is an object based storage. For installing a DB, application or a computer game we need a block based storage. DropBox is one of the first start up to use S3.

Glacier -

Glacier is a place where we archive your files from S3. Glacier is used where we dont need instant access. It is extremely low cost. It takes around 3-4 hours to retrieve them.

EFS - Elastic File Service-

EFS is block based storage. This is a new service. EFS can be shared with multiple virtual machines.

Storage Gateway -

This is a way of connecting S3 to the on premise data center or to the head quarters. It is a virtual machine that is installed on prems, and you get a virtual machine image it then communicates with S3.