Amazon Elastic Block Store Concepts: Difference between revisions
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=Internal= | =Internal= | ||
* [[Amazon Elastic Block | * [[Amazon Elastic Block Store#Subjects|Amazon Elastic Block Store]] | ||
=Block Device Mapping= | =Block Device Mapping= | ||
Revision as of 00:43, 10 December 2019
Internal
Block Device Mapping
Each instance has a root device volume.
A block device is a storage device that moves data in sequences of bytes or bits (blocks). These devices support random access and generally use buffered I/O. Examples include hard disks, CD-ROM drives, and flash drives. A block device can be physically attached to a computer or accessed remotely as if it were physically attached to the computer.
Amazon EC2 supports two types of block devices:
- Instance store volumes - virtual devices whose underlying hardware is physically attached to the host computer for the instance.
- EBS volumes - remote storage devices.
Volume
Each volume has a volume ID