EC2 Storage Flashcards

1
Q

What is an EBS volume?

A
  • A network drive attached to an EC2 instance that persists data
  • Locked to an AZ
  • Has a provisioned capacity
  • Can be detached and attached to another instance
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2
Q

What is EBS Snapshot?

A
  • Used to make a backup of EBS volume at a point in time
  • Can copy snapshots across AZ or region
  • Right click on volume - create Snapshot
  • Stored in S3
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3
Q

What is AMI?

A
  • Amazon Machine Image - SAAS
  • Customization of an EC2 instance
  • Region specific, though can be copied (*)
  • Available from Public AMI, your own AMI, AWS Marketplace AMI - Buy and sell
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4
Q

What is EC2 Instance Store?

A
  • High performance disk
  • Attached to single EC2 instance, not shared
  • Much faster than volume
  • Ephemeral: data lost when stopped
  • Used for cache, temp, scratch
  • If need to save data, your responsibility
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5
Q

What is Elastic File System?

A
  • Manage Network File System that can be mounted to 100’s of EC2 instances
  • Works ONLY with Linux
  • Multi AZ
  • Highly available, scalable, expensive
  • No need for capacity planning
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6
Q

What is EC2 Image Builder?

A
  • Used to automate the create of Virtual Machines or container images. Create/Maintain/Validate/Test/Distribute
  • Used for EC2 AMI’s
  • Can copy the AMI to different regions
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