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AWS Development Essentials by Uchit Vyas, Prabhakaran Kuppusamy

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Working with Amazon EBS

Amazon EBS is a persistent storage provided by AWS. All the data stored on persistent storage is available even after instance shutdown and can be operated at a device level. When the instance is launched, the root device volume holds the image that is used to boot it. When AWS announced Amazon EC2, all AMIs were supported by the Amazon EC2 instance store. This means that the root device for an instance (where the OS is installed) launched from the AMI is an instance store volume formed from a template stored in Amazon's Simple Storage Service (S3). After introducing EBS storages (EBS volumes) in late 2009, AWS presented AMIs that were backed by Amazon EBS. This means that the root device for an instance launched from the ...

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