EC2-OLD

Question 1

whats the resilancy level of an EC2 host?

Answer 1

AZ (if the az fails, it fails)

Question 2

Can EBS allow you to share storage between AZ’s?

Answer 2

No, EBS is deployed in a single AZ

Question 3

A1, M6g gen

Answer 3

A uses Graviton 1, M6g Graviton 2 [general]

Question 4

T fam

Answer 4

Burstable io [general]

Question 5

M fam (a/n)

Answer 5

Steady state general instances (consistent, steady-state cpu), a is amd fam, n is intel fam.

Question 6

C

Answer 6

media encoding, scientific modeling, gaming servers, general machiene learning, [compute]

Question 7

R

Answer 7

Real time analytics, [Memory]

Question 8

X

Answer 8

[Memory]

Question 9

z

Answer 9

[Memory]

Question 10

P

Answer 10

[Accelerated computing]

Question 11

G

Answer 11

[Accelerated computing]

Question 12

F

Answer 12

[Accelerated computing]

Question 13

I

Question 14

I3

Answer 14

[storage optimized]

Question 15

D

Answer 15

[storage optimized]

Question 16

H

Answer 16

[storage optimized]

Question 17

What is direct storage connected to?

Answer 17

The EC2 Host

Question 18

What is Network attached storage and what aws product serves it?

Answer 18

Volumes delivered over a network / EBS

Question 19

is EBS Persistent?

Answer 19

yes

Question 20

what is block storage

Answer 20

storege as a collecion of blocks, presented as a volume, Mountable and bootable (the os creates a fs on top of it)

Question 21

what kind of volume does most ec2 instances use to boot?

Answer 21

EBS

Question 22

what is the resilliancy of EBS

Answer 22

AZ resiilliance

Question 23

When can you attach Instance Store volumes to ec2? at launch time, after, or both?

Answer 23

launch time only

Question 24

When can you attach EBS to ec2? at launch time, after, or both?

Answer 24

both

Question 25

What sizes can EBS HDDs have? (min-max)

Answer 25

125GB - 16TB

Question 26

burstable max of st1 ebs?

Answer 26

250/s/TB

Question 27

base throughput of st1 ebs?

Answer 27

40MB/s/TB

Question 28

Max throughput of sc1?

Answer 28

250 MB/s

Question 29

How are instance stores attached to ec2?

Answer 29

physically

Question 30

can an instance store be attached to multiple ec2s? why/why not?

Answer 30

No, because it's physically attached to one (not logically!)

Question 31

How good is the storage perforamce of instance store?

Answer 31

highest performance in aws.

Question 32

whats the pricing of instance store?

Answer 32

included in the price of instance types that include it (use it or loose it)

Question 33

⭐ Can you attach instance stores after the instance launch?

Answer 33

no, launche time only.

Question 34

what happens to the instance store volume if an instance moves to a new host?

Answer 34

that data is lost

Question 35

if you combine EBS volumes into a RAID0, how many iops can you achieve?

Answer 35

instance max (currently 260,000 iops), assuming the instance is large enough to deliver on them.