EC2 - AMI Types (EBS vs Instance Store)

Question 1

select your AMI based on…

Answer 1

Region, OS, Architecture, Launch Permissions, Storage for the Root Device

Question 2

Instance Store is also known as

Answer 2

Ephemeral Storage

Question 3

EBS

Answer 3

Persistent Storage, fast provisioning times, more durability

Question 4

Can you attach EBS volumes after launching an instance?

Answer 4

Yes

Question 5

Can you attach instance store volumes after launching an instance?

Answer 5

No, but you can attach them before launching

Question 6

Can instances with instance stores be stopped?

Answer 6

No, only reboot or terminate

Question 7

Root device for EBS volume is created from

Answer 7

an EBS snapshot

Question 8

Root device for instance store volume created from

Answer 8

a template stored in S3

Question 9

Can you detach instance store volumes?

Answer 9

No

Question 10

Which takes longer to provision, EBS or instance store?

Answer 10

Instance store

Question 11

Can Instance store volumes be of any instance type?

Answer 11

No, there are limits on instance families

Question 12

On an instance store volume, what happens if the host fails?

Answer 12

instance data is gone

Question 13

What happens if you reboot both volume types?

Answer 13

You will not lose your data

Question 14

Can volumes be stopped?

Answer 14

EBS - Yes

Instance store - No

Question 15

Will root volumes be deleted on termination by default?

Answer 15

Yes. With EBS, you can tell AWS to keep the root volume