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A Network Block Device Behaves Like One Machine's Disk

The outcome says the machine may be taken away mid-run. A learner must be able to say which bytes vanish with the instance, which persist on a detachable volume, and which live independently in the object store. Without this distinction, checkpointing and restart advice in the compute sub-domain has nowhere to land.

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Attaching and Persistently Mounting an Elastic Block Store Volume to an EC2 Instance in AWS

Network-attached block storage provides a virtual machine with raw block devices whose lifecycle is independent of the instance, and making such a device usable requires a fixed layering: attach the …