5. Storage

Question 1

Describe blob

Topic: Blob

Answer 1

Blob means Binary large object, meaning pretty much includes any data

Question 2

Describe how blobs of data are stored

Topic: Blob

Answer 2

1. Data is stored in blob
2. Blob blocks are stored in containers
3. Containers are located inside storage accounts

Question 3

What are the three types of blob storage?

Topic: Blob

Answer 3

1. Block type - store text and binary data
2. Append type - block blob types that are optimezed for append operations (ie. log writes)
3. Page type - store random access files (ie. a virtual hard drive)

Question 4

What are the three pricing tiers for blob storage?

Topic: Blob

Answer 4

1. Hot for frequently access files
2. Cool - Lower cost, higher access time
3. Archive - Lowest cost, highest access time

Question 5

What are managed disk typically used for?

Topic: Disk

Answer 5

A managed disk is what you attach to a VM

Question 6

What are the 4 types of disk types

Topic: Disk

Answer 6

1. HDD
2. Standard SSD
3. Premium SSD
4. Ultra Disk

Question 7

What is Azure File Storage used for?

Topic: File Storage

Answer 7

Used for sharing access across multiple machines and connecing to on-premisis infrastructure.

Question 8

What is Azure File Storage?

Topic: File Storage

Answer 8

A fully managed file share service that is always available.

Question 9

How does Azure ensure data protection against unexpected failures?

Topic: Storage Redundancy

Answer 9

Azure storage will always, automatically create multiple copies of data.

Question 10

What is the minimum number of copies of data Azure will make.

Topic: Storage Redundancy

Answer 10

Three

Question 11

Describe the four possible storage redundancy options?

Describe in simple terms.

Topic: Storage Redundancy

Answer 11

1. Single Zone, Single Region
2. Multi Zone, Single Region
3. Single, Zone, Multi Region
4. Multi Zone, Multi Region

Question 12

Describe locally-redundant storage (LRS)

Topic: Storage Redundancy

Answer 12

Creates copies in single location (datacenter/zone)

Question 13

Describe Zone-redundant storage (ZRS)

Topic: Storage Redundancy

Answer 13

Creates three copies across three availabity zones in a region, one copy in each zone

Question 14

Describe Geo-redundant storage (GRS)

Topic: Storage Redundancy

Answer 14

Creates six copies across two different regions
1. Three copies in primary regional physical location (LRS)
2. Three copies in secondary (paired) regional physical location (LRS)

Question 15

Describe Geo-zone-redundant storage (GZRS)

Topic: Storage Redundancy

Answer 15

Creates six copies across two different regions
1. Three copies across three availability zones in primary region (ZRS)
2. Three copies in secondary region physical location/zone (LRS)

Question 16

What are three Azure services used for smaller, occasional data transfers?

Describe each service.

Topic: Moving Data

Answer 16

1. AzCopy - Command line interface tool
2. Azure Storage Explorer - GUI interactive tool
3. Azure File Sync - Sync Azure files with on-premisis files

Question 17

What are two Azure services used for larger scale data transfers?

Describe each service.

Topic Moving Data

Answer 17

1. Azure Data Box - Offline data transfer to/from Azure
2. Azure Migrate - Migrate non-Azure resources into Azure, including servers, databases, and apps

Question 18

Describe the three premium performance storage options.

Include the supported storage type and redudnancy option

Topic: Premium Performance Storage Options

Answer 18

1. Premium block blobs- supports block storage, and LRS/ZRS only
2. Premium page block - supports page blob storage, and LRS only
   3.Premium file shares - supports Azure files, and LRS/ZRS only