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Microsoft Azure Fundamentals > Describe Azure storage services > Flashcards

Describe Azure storage services Flashcards

1
Q

What is the purpose of an azure storage account?

A

Provides a unique namespace for your Azure Storage data that’s over HTTP/HTTPS.

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2
Q

What are the 5 types of storage accounts?

A

Standard; Premium block blobs; Premium file shares; Premium page blobs.

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3
Q

Define the purpose of a ‘standard’ azure storage account

A

For blobs, file shares, queues, and tables; Recommended for most scenarios using Azure Storage.

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4
Q

Define the purpose of a ‘Premium block blobs’ azure storage account

A

For blob storage; Recommended for scenarios with high transaction rates, use smaller objects, or require consistently low storage latency.

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5
Q

Define the purpose of a ‘Premium file shares’ azure storage account

A

For file shares only; Recommended for enterprise or high-performance scale applications that supports SMB and NFS.

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6
Q

Define the purpose of a ‘Premium page blobs’ azure storage account

A

Premium storage account type for page blobs only.

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7
Q

How does azure offer redundancy to all Azure storage accounts?

A

Data in an Azure Storage account is always replicated three times in the primary region.

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8
Q

What are the two ways Azure storage determines how data is replicated in the primary region of a storage resource?

A

Locally redundant storage (LRS) and Zone-redundant storage (ZRS).

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9
Q

Define ‘Locally redundant storage (LRS)’

A

Lowest-cost redundancy option; Replicates your data three times within a single data center in the primary region; provides at least 11 nines of durability.

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10
Q

Define ‘Zone-redundant storage’

A

Replicates your Azure Storage data synchronously across three Azure availability zones in the primary region; Provides at least 12 nines of durability.

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11
Q

Is data in Zone-redundant storage accessible if a zone becomes unavailable?

A

Data is still accessible for both read and write operations even if a zone becomes unavailable.

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12
Q

What replication service is best suited to meet governance requirements?

A

Zone-redundant storage

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13
Q

What replication service is best suited for high availability applications?

A

Zone-redundant storage

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14
Q

How can using a secondary region support high availability?

A

If the data in a storage account is copied to a secondary region, the data is available if a catastrophic failure affects data in the primary region.

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15
Q

When configuring a secondary region for a storage account, how is the secondary region chosen?

A

The secondary region is based on Azure region pairs, and can’t be changed.

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16
Q

What are the two options Azure Storage offers for copying data to a secondary region to protect against regional outages?

A

geo-redundant storage (GRS) and geo-zone-redundant storage (GZRS).

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17
Q

Is data in a secondary region accessible?

A

By default, data in the secondary region isn’t available for read or write access unless there’s a failover to the secondary region.

18
Q

Define ‘geo-redundant storage (GRS)’

A

GRS offers durability for Azure Storage data objects of at least 16 nines over a given year.

19
Q

How does geo-redundant storage (GRS) function?

A
  1. GRS copies data synchronously three times within a single physical location in the primary region using LRS.
  2. Copies your data asynchronously to a single physical location in the secondary region (the region pair) using LRS.
20
Q

Because data is replicated to the region pair asynchronously, what are concerns of data transfer?

A

A failure that affects the primary region may result in data loss if the primary region can’t be recovered.

21
Q

What is the Azure Storage recovery point objective (RPO)?

A

The interval between the most recent writes to the primary region and the last write to the secondary region and indicates the point in time to which data can be recovered; Azure Storage typically has an RPO of less than 15 minutes.

22
Q

Define ‘geo-zone-redundant storage (GZRS)’

A

GZRS is designed to provide at least 16 nines of durability of objects over a given year.

23
Q

How does geo-zone-redundant storage (GZRS) function?

A
  1. Data in a GZRS storage account is copied across three Azure availability zones in the primary region.
  2. Replicated to a secondary geographic region, using LRS, for protection from regional disasters.
24
Q

Can read/write access be enabled for a secondary region?

A

Yes, Enable read-access geo-redundant storage (RA-GRS) or read-access geo-zone-redundant storage (RA-GZRS).

25
Q

Define an ‘Azure Blob’ storage

A

An object storage solution for the cloud that can store massive amounts of data.

26
Q

What type of data can an azure blob store?

A

Blob storage is unstructured, meaning that there are no restrictions on the kinds of data or file formats it can hold.

27
Q

How can objects in blob storage be accessed?

A

Anywhere via HTTP(s) using URLs, APIs, Azure PowerShell/CLI.

28
Q

To save cost on storage, how should data be organized?

A

Based on attributes like frequency of access and planned retention period.

29
Q

Define ‘Azure Migrate’

A

A service that helps you migrate from an on-premises environment to the cloud.

30
Q

What azure migrate service can help discover and asses on-premises servers?

A

Discovery and assessment.

31
Q

Define Azure server migration

A

Migrate VMware VMs, Hyper-V VMs, physical servers, other virtualized servers, and public cloud VMs to Azure.

32
Q

Define ‘data migration assistant’

A

A stand-alone tool to assess SQL Servers; Pinpoints potential problems blocking migration.

33
Q

Define ‘Azure Database Migration Service’

A

Migrate on-premises databases to Azure VMs running SQL Server, Azure SQL Database, or SQL Managed Instances.

34
Q

Define ‘Azure App Service migration assistant’

A

A standalone tool to assess on-premises web apps in .NET or PHP for migration to Azure App Service.

35
Q

Define ‘Azure Data Box’

A

A physical migration service that helps transfer large amounts of data by shipping a proprietary Data Box.

36
Q

What are the typical use cases for azure data box?

A
  1. Disaster recovery
  2. Governance/Compliance
  3. Planned Migration
37
Q

What is the built-in azure CLI command that can be used to copy blobs or move files between storage accounts?

A

AzCopy

38
Q

How can ‘AzCopy’ synchronize copies of a file?

A

Syncing files is one-directional; You must designate source and destination, and AzCopy will copy files or blobs in that direction.

39
Q

Define ‘Azure Storage Explorer’

A

A standalone app that provides a graphical interface to manage files, upload to Azure, download from Azure, or move between storage accounts.

40
Q

How does Azure Storage Explorer function?

A

Uses AzCopy on the backend to perform all of the file and blob management tasks.

41
Q

Define ‘Azure file sync’

A

Once installed on a windows server, it will sync on-premises data to an azure file share/storage account.

Microsoft Azure Fundamentals (13 decks)

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