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AWS Certified Solution Architect Associate > Storage Gateway > Flashcards

Storage Gateway Flashcards

This deck aims to help retain concepts related to the Storage Gateway service.

1
Q

Which AWS service enables hybrid cloud storage by providing on-premises data centers with access to virtually unlimited cloud storage through standard storage protocols like iSCSI, SMB, and NFS?

A

AWS Storage Gateway

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2
Q

What are the types of AWS Storage Gateway?

A
  • Volume Gateway
  • Tape Gateway (Virtual Tape Library - VTL)
  • File Gateway
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3
Q

How can AWS Storage Gateway be deployed for integration with on-premises environment?

A
  • As a virtual machine (VM) on platforms like VMware, Hyper-V, or Linux KVM
  • As an Amazon EC2 instance within a VPC
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4
Q

How is AWS Volume Storage Gateway deployed?

A

As a virtual machine on-premises or as a hardware appliance, serving as a bridge between on-premises storage and AWS storage

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5
Q

Which protocols does AWS Volume Storage Gateway support?

A
  • iSCSI
  • NFS (Linux systems)
  • SMB (Windows systems)
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6
Q

Which AWS services are natively integrated with AWS Volume Storage Gateway?

A
  • EBS
  • S3
  • S3 Glacier
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7
Q

What are the common use cases for AWS Volume Storage Gateway?

A
  • On-premises to AWS migrations
  • Storage extensions to AWS
  • Tiered storage solutions
  • Disaster recovery and backup system replacement
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8
Q

In which modes can AWS Volume Storage Gateway operate?

A
  • Stored volumes
  • Cached volumes
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9
Q

How does an on-premises data center communicate with AWS Volume Storage Gateway?

A

Over the public internet to a public storage gateway endpoint or via AWS Direct Connect (DX) using a Public Virtual Interface (VIF)

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10
Q

Can EBS Snapshots be created from raw data stored in S3 through AWS Volume Storage Gateway?

A

Yes, raw data in S3 can be used to create snapshots, which can then be used to provision EBS volumes

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11
Q

In which AWS Volume Storage Gateway mode is all data stored locally on the gateway’s on-premises storage, while also asynchronously copied to S3 in an AWS-managed area that is accessible only through the AWS Storage Gateway console?

A

Stored volume mode

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12
Q

In which AWS Volume Storage Gateway mode is all data primarily stored in S3, with only frequently accessed data cached locally, and the AWS-managed area is accessible only through the storage gateway console?

A

Cached volume mode

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13
Q

What are the advantages and limitations of using AWS Volume Storage Gateway in stored volume mode?

A

Advantages:
- Enables full disk backups with reliable Recovery Point Objectives (RPO) and Recovery Time Objectives (RTO)
- Supports disaster recovery by allowing EBS snapshots to create EBS volumes

Limitations:
- Does not support data center extension for capacity increase, as data is primarily stored on the gateway’s local storage

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14
Q

What is the primary benefit of AWS Volume Storage Gateway in cached volume mode?

A

Provides data center extension by increasing storage capacity, as data is stored remotely in the AWS-managed S3 area

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15
Q

Which AWS Volume Storage Gateway mode uses an upload buffer and local storage?

A

Stored volume mode

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16
Q

Which AWS Storage Gateway modes utilize an upload buffer and local cached storage for actively used data?

A
  • Volume Storage Gateway in Cached volume mode
  • Tape Storage Gateway (Virtual Tape Library - VTL)
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17
Q

What is the maximum number of volumes supported by AWS Volume Storage Gateway?

A

32 volumes

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18
Q

What is the total storage capacity supported by AWS Volume Storage Gateway?

A
  • Stored mode: Up to 512 TB
  • Cached mode: Up to 1 PB
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19
Q

What is the maximum volume size supported per AWS Volume Storage Gateway?

A
  • Stored mode: Up to 16 TB per volume
  • Cached mode: Up to 32 TB per volume
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20
Q

Which AWS Storage Gateway type provides a Virtual Tape Library (VTL) backed by S3 and a Virtual Tape Shelf (VTS) backed by Glacier or Glacier Deep Archive?

A

AWS Tape Storage Gateway

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21
Q

How does an on-premises data center communicate with an AWS Tape Storage Gateway?

A

Through the public network using a public Storage Gateway endpoint or via AWS Direct Connect (DX) Public Virtual Interface (VIF)

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21
Q

What protocol is supported by AWS Tape Storage Gateway?

A

iSCSI

21
Q

What does AWS Tape Storage Gateway present to a backup server?

A

An iSCSI endpoint

21
Q

What is the size range of virtual tapes in AWS Tape Storage Gateway?

A

From 100 GiB to 5 TiB, with 5 TiB being the maximum size of an S3 object

22
Q

What is the total storage capacity for all virtual tapes in AWS Tape Storage Gateway?

A

1 PiB of data

22
Q

What is the maximum number of virtual tapes supported by AWS Tape Storage Gateway?

A

1500 virtual tapes

23
Q

Where can virtual tapes be exported in AWS Tape Storage Gateway for unlimited storage?

A

The Virtual Tape Shelf (VTS):

  • Glacier: For data that might need occasional access
  • Glacier Deep Archive: For long-term storage of data required for legal or compliance purposes, unlikely to be accessed
24
Q

Can virtual tapes in AWS Tape Storage Gateway be accessed when moved to Glacier for storage?

A

Yes, virtual tapes can be retrieved back into the Virtual Tape Library (VTL) for access by AWS Tape Storage Gateway

25
Q

What are the main use cases for AWS Tape Storage Gateway?

A
  • Replaces expensive hardware components of existing backup systems with AWS storage
  • Extends backup system capacity using AWS
  • Facilitates migration of VTL backups to the cloud
26
Q

Which AWS Storage Gateway type is best suited for traditional tape backup architectures?

A

AWS Tape (VTL) Storage Gateway

27
Q

What is a Tape Drive?

A

A device that reads from or writes to a tape sequentially, unlike SSDs or HDDs that support random access

28
Q

What are Tape Loaders?

A

Robots that automate the swapping of tapes in and out of tape drives

29
Q

What are Tape Slots?

A

Storage locations within a tape library for tapes not currently in a drive

30
Q

What does a Tape Library consist of?

A
  • One or more drives
  • One or more loaders
  • One or more slots
31
Q

What action is required to locate specific data on a tape?

A

The entire tape must be sequentially searched (no random access like SSDs or HDDs)

32
Q

Can data on a tape be updated?

A

No, data on tape can only be overwritten, not updated

33
Q

Which AWS Storage Gateway type bridges on-premises file storage with S3 and provides mount points (shares) via NFS for Linux systems and SMB for Windows systems?

A

AWS File Storage Gateway

34
Q

Which AWS Storage Gateway type stores files as objects directly in an S3 bucket, making them visible unlike other types where data is stored in raw format in AWS-managed S3 areas?

A

AWS File Storage Gateway

35
Q

How does AWS File Storage Gateway link file shares to S3 buckets?

A

Each file share is directly mapped to a single S3 bucket, establishing a one-to-one connection

36
Q

What protocols can be used to access file shares in AWS File Storage Gateway?

A
  • NFS (for Linux)
  • SMB (for Windows)
37
Q

Which AWS Storage Gateway type integrates with directory authentication?

A

AWS File Storage Gateway

38
Q

Which AWS Storage Gateway type uses local storage as a read-and-write cache for improved performance?

A

AWS File Storage Gateway, providing LAN-like performance through caching

39
Q

What is the maximum number of file shares supported by AWS File Storage Gateway?

A

Up to 50 file shares per File Storage Gateway

40
Q

When using AWS File Storage Gateway, is the directory structure of on-premises file shares maintained in the corresponding S3 object names?

A

Yes, the structure of file shares is reflected in the S3 object names

41
Q

Does AWS File Storage Gateway store data locally on-premises?

A

No, data is stored in AWS S3, only cache is stored locally to enhance performance

42
Q

What additional benefits does AWS File Storage Gateway gain from storing files in S3?

A

Files in S3 allow access to features such as:

  • S3 Events with Lambda triggers
  • Lifecycle Policies for automated transitions and deletions
  • Cross-Region Replication for disaster recovery
43
Q

What API is used by AWS File Storage Gateway to notify other gateways when objects are updated?

A

NotifyWhenUploaded API

44
Q

Does AWS File Storage Gateway support object locking?

A

No, but you can enable read-only mode on shares or tightly control file access to achieve similar restrictions

45
Q

How can AWS File Storage Gateway enable a multi-region disaster recovery solution?

A

By configuring cross-region replication from source to destination S3 buckets

46
Q

What S3 feature can AWS File Storage Gateway use to optimize object storage?

A

Lifecycle Policies, which allow moving objects to different S3 storage classes based on rules

47
Q

Can multiple AWS File Storage Gateways create bucket shares with the same S3 bucket?

A

Yes, this enables distributed access to the same files from multiple on-premises locations

48
Q

What are the primary use cases for AWS File Storage Gateway?

A

Extending on-premises file storage to AWS S3

49
Q

How can you determine which AWS Storage Gateway type (Volume, Tape, File) fits your use case?

A
  • Volume Gateway: Best suits for volume storage types using iSCSI, NFS (Linux), or SMB (Windows) protocols
  • Tape Gateway: Ideal for tape backups using the iSCSI protocol
  • File Gateway: Suited for file storage over NFS (Linux) or SMB (Windows) protocols

AWS Certified Solution Architect Associate (38 decks)

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