Instance types

Question 1

Characteristics of A1, M6g:

Answer 1

AMR based processors, tiny and efficient

Question 2

Characteristics of T3, T3a and when to use:

Answer 2

Burstable instances. When CPU usage is low but with occasional bursts (consume credit).

Question 3

Characteristics of M5, M5a, M5n:

Answer 3

steady-state general instances

Question 4

What are the characteristics of “instance storage”?

Answer 4

• It is directly (local) attached
• Superfast - because it is directly connected to the hardware
• It is ephemeral/temporary

Question 5

What are the disadvantages of using instance storage

Answer 5

It is ephemeral and is not designed for persistent data.

Question 6

Which cases can produce a data loss when using “Instance storage”?

Answer 6

Disk fails, HW fails, EC2 instance moves within hosts.

Question 7

What are the characteristics of “EBS”?

Answer 7

• It is a Network-attached storage
• Volumes are delivered over the network
• Persistent storage lives on past the lifetime of the instance
• Generally highly resilient
• This storage will survive issues on the EC2 instance