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AWS TSA 2022 > EC2 Storage > Flashcards

EC2 Storage Flashcards

1
Q

What does EBS stand for?

A

Elastic Block Store

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2
Q

What is an EBS Volume?

A

It is a network drive you can attach to your instance to persist data

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3
Q

Are EBS Volumes global?

A

No, they are AZ specific

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4
Q

What does IOPS stand for?

A

IO Operations Per Second

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5
Q

What happens to the EBS volume when the instance is terminated?

A

By default, the root EBS volume will be deleted. You can prevent that by disabling “Delete on Termination”. By default, any other attached volume is not deleted

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6
Q

How can I move an EBS volume from 1 AZ or Region to another?

A

You make a backup/snapshot of the volume, then copy the snapshot to a new AZ/Region

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7
Q

What does AMI stand for?

A

Amazon Machine Image

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8
Q

What is an AMI?

A

It is a customization of an EC2 instance

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9
Q

What are the 6 types of EBS Volumes?

A
  • gp2 / gp3 (SSD) - General Purpose SSD
  • io1 / io2 (SSD) - Highest Performance SSD
  • st1 (HDD) - Low cost HDD
  • sc1 (HDD) - Lowest cost HDD
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10
Q

What type of volumes can be used as root volumes?

A

Only gp2/gp3 and io1/io2

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11
Q

What are gp2/gp3 General Purpose SSD volumes best suited for?

A

Cost effective storage with low latency

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12
Q

What are io1/io2 Provisioned IOPS SSD volumes best suited for?

A

Critical business apps with sustained IOPS performance or apps that need more than 16,000 IOPS

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13
Q

What are st1 Throughput Optimized HDD volumes best suited for?

A

Big Data, Data Warehousing

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14
Q

What are sc1 Cold HDD volumes best suited for?

A

Infrequently accessed data and scenarios where low cost is important

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15
Q

Can I attach an EBS Volume to multiple instances?

A

Only if the instances are of the type io1/io2

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16
Q

What are the 4 benefits of encrypting an EBS volume?

A
  • Data at rest is encrypted in the volume
  • All data in flight between the volume and instance is encrypted
  • All snapshots will be encrypted
  • All volumes created from snapshots will be encrypted
17
Q

How can I encrypt an unencrypted volume?

A

Create a backup/snapshot of the volume. Copy the volume and encrypt during the copy process

18
Q

What does EFS stand for?

A

Elastic File System

19
Q

What is EFS?

A

It is a managed network file system that can be mounted on many instances in multiple AZs

20
Q

What are some good use cases for EFS?

A

Content Management, Web Serving, Data Sharing, Wordpress

AWS TSA 2022 (19 decks)

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