Amazon EBS (Elastic Block Store )

Question 1

What is Amazon EBS ( Elastic Block Store )

Answer 1

It’s a service the provides block level storage volumes for use with Amazon EC2 instances

Question 2

What do Amazon EBS volumes behave like ?

Answer 2

Like Raw, unformatted external block devices

Question 3

How Many instances can you attach a single EBS volume to ?

Answer 3

Only ONE instance at a time

Question 3

What can you do with an EBS volume on an EC2 instance ?

Answer 3

You can MOUNT an EBS volume on an EC2 instance

Question 4

How Many EBS volumes can you attach on an EC2 instance ?

Answer 4

Multiple EBS volumes can be on the same instance

Question 5

What measured latency does an EBS volume provide when mounted on an instance ?

Answer 5

Singe-digit millisecond latency

Question 6

What enables a EBS volume to provide single-digit latency ?

Answer 6

When an EBS volume is mounted on an EC2 instance.

Question 7

What are EBS volume designed for and useful for ?

Answer 7

For throughput and
Transaction intensive workloads at any scale.

Question 7

What does Amazon EBS offer regarding data ?

Answer 7

Data persistence

Question 8

What is Amazon EBS Data Persistence ?

Answer 8

All the data on an attached Amazon EBS volume remains available even after you have STOPPED or TERMINATE an EC2 instance.

Question 9

What is SSD-backed Storage used for

Answer 9

It’s optimized for transactional workloads which involve frequent read/write operations with small I/O size.

Eg.
Databases and Boot volumes

Question 9

What are the TWO Amazon EBS Volume Types ?

Answer 9

• Solid-State Drive
  SSD-backed Storage
• Hard Disk Drive
  HDD-backed Storage

Question 10

What Storage volumes provides the Highest Performance ?

Answer 10

SSD-backed Storage:
provisioned IOPS SSD io1 and io2

Question 11

What storage volumes is best for Latency sensitive Transactional workloads

Answer 11

SSD-backed Storage:
provisioned IOPS SSD io1 and io2

Question 12

What storage volumes balance price and performance for a wide variety of transactional data.

Answer 12

SSD-backed Storage:
General Purpose SSD Volumes

gp3
gp2

Question 13

What does gp3 volumes enable customers to do ?

Answer 13

It enables customers to provision performance independent of storage capacity.

Question 14

What does SSD-backed volumes depend primarily on ?

Answer 14

IOPS ( input/output operations per sec )

Question 15

What is HDD-backed Storage used for ?

Answer 15

it’s used for throughput-intensive workloads

Eg.

MapReduce
Datawarehouse
log processing

Question 15

What volumes are used in HDD-backed storage ?

Answer 15

Throughput Optimized HDD:
st1
sc1

Question 16

What are HDD-backed st1 volumes used for ?

Answer 16

For frequently accessed throughput-intensive workloads

Question 17

What are HDD-backed sc1 volumes used for ?

Answer 17

• For less frequently accessed data
• Also the lowest cost Cold HDD

Question 18

What does HDD-backed storage depend primarily on ?

Answer 18

On Throughput measured by Megabytes per second

Question 19

Maximum size for SSD-Backed Storage Provisioned IOPS io1 ?

Answer 19

16TB

Question 20

Maximum size for SSD-Backed Storage Provisioned IOPS io2 ?

Answer 20

64 TB

Question 21

Maximum IOPS for SSD-Backed Storage Provisioned IOPS io1 and io2 ?

Answer 21

64,000 IOPS (Higher with Nitro)

Question 22

Which EBS storage provides the Highest Durability ?

Answer 22

SSD-Backed Provisioned IOPS io2

Question 23

Which EBS storage is considered to be a very large High Performance volume ?

Answer 23

SSD-Backed Provisioned IOPS io2

Question 24

Which SSD-Backed Storage Provisioned IOPS volume is the cheapest

Answer 24

SSD-Backed Provisioned IOPS io1

Question 25

When To Choose SSD-Backed Provisioned IOPS io1?

Answer 25

- Legacy workload - Migration scenario where io1 already exists - Cost sensitivity but still need provisioned IOPS

Question 26

When To Choose SSD-Backed Provisioned IOPS io2?

Answer 26

- Mission-critical database - Financial systems - Need highest durability - Very Large volume sizes - Long-running production workloads

Question 27

When To Choose SSD-Backed GP3?

Answer 27

Balanced performance Independent control of: - IOPS - Throughput Excellent price/performance ratio Default recommendation

Question 28

Which EBS volumes support Multi-Attach capability ?

Answer 28

Only io1 and io2 support Multi-Attach.

Question 29

Which SSD-Backed General Purpose volume is the cheapest?

Answer 29

SSD-Backed gp3

Question 30

Define throughput control for each of the SSD-Backed General Purpose volumes ?

Answer 30

gp2: Throughput control is LIMITED. gp3: Throughput control is ADJUSTABLE.

Question 31

What is io2 Block Express ?

Answer 31

io2 Block Express is an enhanced version of io2 designed for: - Very large databases - Ultra-high IOPS - Ultra-low latency - Enterprise workloads (SAP HANA, Oracle, SQL Server)

Question 32

Maximum IOPS for io2 Block Express ?

Answer 32

256,000

Question 32

What latency does io2 Block Express provide ?

Answer 32

Sub-millisecond latency

Question 33

Maximum size for io2 Block Express ?

Answer 33

64TB