Instance Types, Utilization, and Performance

Question 1

Virtualization Types – HVM AMIs(Hardware virtual machine)

Answer 1

• • Can use special hardware extensions
• • Can use PV drivers for network and storage
• • Usually the same or better performance than PV alone.

Question 2

Virtualization Types – PV AMIs(Paravirtual)

Answer 2

Historically faster than HVM, no longer the case.

Question 3

Instance Types – General Purpose

Answer 3

T2, M3, M4

Question 4

T2

Answer 4

• • intended for work loads that do not use the full CPU often or consistently
• • Provide Burstable Performance
• • EBS-only storage

Question 5

M3

Answer 5

• • Provide a balance of compute, memory, and network resources
• • SSD storage(Instance store);

Question 6

M4

Answer 6

• • Provide a balance of compute, memory, and network resources
• • Support Enhanced Networking
• • EBS-optimized

Question 7

Instance Types – Compute Optimized

Answer 7

• • Lowest price/compute performance in EC2

- - C3 and C4

Question 8

C3

Answer 8

• • SSD-backed instance storage

- - Support for Enhanced Networking and Clustering

Question 9

C4

Answer 9

• • Latest generation of Compute-optimized instances
• • Highest performing processors(optimized specifically for Ec2)
• • Support for Enhanced networking and clustering
• • EBS-optimized.

Question 10

Instance Types – Memory Optimized

Answer 10

Lowest price per amount and memory performance
R3 instance:
– SSD-backed instance storage
– High memory capacity(for big data etc)
– Support for Enhanced Networking

Question 11

Instance Types – GPU

Answer 11

• • Graphics and general purpose GPU compute.
• -G2 instances:
  
  • • High frequency processors
  • • High-performance NVIDIA GPUs
  • • On-board hardware video encoder
  • • Low-latency frame capture and encoding, enabling interactive
  • • Useful for GPU compute workloads, machine learning, video encoding, 3D application streaming, etc…

Question 12

Instance Types – Storage Optimized

Answer 12

• -very fast SSD-backed instance storage optimized for high random !O performance and high IOPS(IO operations per second).
• -I2

Question 13

I2

Answer 13

• • High IO performance(including high random performance);
• • High frequency processors;
• • SSD storage;
• • Supports TRIM;
• • Supports Enhanced Networking;

Question 14

Instance Types – Burstable Performance

Answer 14

– CPU Credits are used to “burst” past the baseline performance up to 100% a CPU core.

Question 15

EBS optimized instances

Answer 15

EBS volumes only allow you to provision up to 4,000k IOPS per volume.
EBS optimized instances have greater IOPs and can go up to 16K.

Question 16

EBS provisioned IOPs

Answer 16

can achieve 10,000 IOPS at 200GiB.