EC2 Storage

Question 1

EBS Volume

Answer 1

Elastic Block Store

block-level storage device, can only be mounted to 1 instance at a time.
bound to specific A.Z.

Question 2

EBS Snapshot

Answer 2

backup/copy of your EBS Volume, copy can be used across A.Z. or Region

Question 3

AMI

Answer 3

Amazon Machine Image.

Provides the information required to launch an instance.

Can create your own or use AWS (public) AMI

Question 4

EC2 Image Builder

Answer 4

Used to create virtual machines or container images.

automates creation & maintenance of AMIs.

Free service, only pay for underlying resources (ex: AMI storage)

Question 5

EC2 Instance Store

Answer 5

physical hardware disk attached to physical server, used by EC2.
better performance but wish data loss if hardware fails.

Question 6

EFS

Answer 6

Elastic File System.

storage to attach to EC2 instance, similar to EBS except it can be mounted to MULTIPLE EC2 instances.

works across multiple A.Z.

Question 7

Differences between EFS vs EBS

Answer 7

EFS - expensive. managed network file system that can be shared across different Amazon EC2 instances

EBS - block-level storage designed to be used exclusively with separate EC2 instance

Question 8

EFS IA

Answer 8

Elastic File Sytem Infrequent Access

• lower cost then EFS
• used for files not access everyday

Question 9

EFS Life Cycle Policy

Answer 9

EFS auto moves files to EFS IA based on when you access them

Question 10

Shared Responsibility for EC2 Storage

Answer 10

aws = infrastructure, hardware
us = set up backup/snapshots, encrypting data

Question 11

FSx (Windows)

Answer 11

Windows native shareable file system

Question 12

FSx (Lustre)

Answer 12

For HPC (high performance computing), scalable file storage