Storage

Question 1

Name the 3 types of AWS Storage Gateways

Answer 1

1. File Gateway
2. Volume Gateway
3. Tape Gateway

Question 2

What 2 protocols can be used with a File Gateway?

Answer 2

1. SMB

2. NFS

Question 3

What is a File Gateway?

Answer 3

VM agent that allows transfer of data between onprem and AWS with a file like interface, stored as S3 objects and asynch uploaded

Question 4

What is a Volume Gateway?

Answer 4

VM agent for data transfer between onprem and AWS with a disk volume interface, stored as S3 objects

Question 5

What protocol can be used with Volume Gateway?

Answer 5

1. iSCSI block protocol

Question 6

How are snapshots managed with Volume Gateway?

Answer 6

Point in time Snapshots are stored as EBS snapshots

Question 7

What 2 modes does Volume Gateway support?

Answer 7

1. cached mode: frequently used data is cached locally, primary data is stored in S3
2. stored mode: entire data is stored locally, asynchronously backed up to S3

Question 8

What protocols can be used with a Tape Gateway?

Answer 8

1. iSCSI based VTL

Question 9

What is a Tape Gateway?

Answer 9

VM agent for data transfer between on-prem and AWS with a virtual tape interface stored in S3

Question 10

How do you host a static website on S3?

Answer 10

1. Configure the bucket to have the Static Web Site Hosting property
2. Specify the index page
3. Disable the Block Public Access setting
4. Attach a bucket policy granting public access to the bucket files

Question 11

What is AWS Snowball? Up to what size can it handle?

Answer 11

Snowball is an AWS provided NAS device for import/export of on-prem data to AWS S3. Up to 80TB

Question 12

What is AWS Snowball Edge? Up to what size can it handle?

Answer 12

AWS Provided device that is compute or storage optimized. Can host a NFS file server or S3 endpoint, locally compute. Local cluster. Up to 100 TB

Question 13

What is AWS Snowmobile? Up to what size can it handle?

Answer 13

Data transfer service in and out of AWS up to 100PB

Question 14

What is the default backup retention period for RDS? What is the minimum? What is the max?

Answer 14

7 days default. 0 day minimum (disables automated bkps). 35 day max

Question 15

What is the time to failover in a Multi-AZ RDS deployment?

Answer 15

1-2 minutes is the typical failover time

Question 16

When is I/O suspended for RDS?

Answer 16

There is brief suspension of I/O for Single AZ Backups and Snapshots, but not for Multi-AZ

Question 17

What is the max number of read replicas allowed in RDS per DB?

Answer 17

15 Read Replicas

Question 18

What is DAX?

Answer 18

DynamoDb Accelerator is a managed write through cache for microsecond performance

Question 19

What is the max size for an item (key and attributes) in DynamoDB?

Answer 19

400KB

Question 20

What are the db engines supported by RDS?

Answer 20

MySQL, MariaDB, Aurora, PostgreSQL, SQL Server, Oracle

Question 21

RDS basic monitoring is at what intervals?

Answer 21

1 minute intervals

Question 22

RDS enhanced monitoring is at what intervals?

Answer 22

1 second intervals

Question 23

How many copies does Aurora keep? Across how many AZ’s?

Answer 23

6 copies, across 3 AZ’s

Question 24

How many copies does Redshift keep?

Answer 24

3 copies - 1 original, 1 copy on compute, 1 backup in S3

Question 25

How many facilities can S3 lose but remain functional?

Answer 25

Sustain a loss of 2 facilities (except for One-Zone IA and RRS)