AWS Storage Gateway

  • The service enables hybrid storage between on-premises environments and the AWS Cloud.
  • It integrates on-premises enterprise applications and workflows with Amazon’s block and object cloud storage services through industry standard storage protocols.
  • The service stores files as native S3 objects, archives virtual tapes in Amazon Glacier, and stores EBS Snapshots generated by the Volume Gateway with Amazon EBS.
  • Storage Solutions

    • File Gateway – supports a file interface into S3 and combines a service and a virtual software appliance.
      • The software appliance, or gateway, is deployed into your on-premises environment as a virtual machine running on VMware ESXi or Microsoft Hyper-V hypervisor.
      • File gateway supports
        • S3 Standard
        • S3 Standard – Infrequent Access
        • S3 One Zone – IA
      • With a file gateway, you can do the following:
        • You can store and retrieve files directly using the NFS version 3 or 4.1 protocol.
        • You can store and retrieve files directly using the SMB file system version, 2 and 3 protocol.
        • You can access your data directly in S3 from any AWS Cloud application or service.
        • You can manage your S3 data using lifecycle policies, cross-region replication, and versioning.

AWS Storage Gateway Training

    • Volume Gateway – provides cloud-backed storage volumes that you can mount as iSCSI devices from your on-premises application servers.
      • Cached volumes – you store your data in S3 and retain a copy of frequently accessed data subsets locally. Cached volumes can range from 1 GiB to 32 TiB in size and must be rounded to the nearest GiB. Each gateway configured for cached volumes can support up to 32 volumes.

AWS Storage Gateway Training

      • Stored volumes – if you need low-latency access to your entire dataset, first configure your on-premises gateway to store all your data locally. Then asynchronously back up point-in-time snapshots of this data to S3. Stored volumes can range from 1 GiB to 16 TiB in size and must be rounded to the nearest GiB. Each gateway configured for stored volumes can support up to 32 volumes.

AWS Storage Gateway Training

    • Tape Gateway – archive backup data in Amazon Glacier.
      • Has a virtual tape library (VTL) interface to store data on virtual tape cartridges that you create.
      • Deploy your gateway on an EC2 instance to provision iSCSI storage volumes in AWS.
  • Storage Gateway Hosting Options

    • As a VM containing the Storage Gateway software, run on VMware ESXi, Microsoft Hyper-V on premises
    • As a VM in VMware Cloud on AWS
    • As a hardware appliance on premises
    • As an AMI in an EC2 instance
  • Storage Gateway stores volume, snapshot, tape, and file data in the AWS Region in which your gateway is activated. File data is stored in the AWS Region where your S3 bucket is located.
  • The local gateway appliance maintains a cache of recently written or read data so your applications can have low-latency access to data that is stored durably in AWS. The gateways use a read-through and write-back cache.
  • File Gateway File Share

    • You can create an NFS or SMB file share using the AWS Management Console or service API.
    • After your file gateway is activated and running, you can add additional file shares and grant access to S3 buckets.
    • You can use a file share to access objects in an S3 bucket that belongs to a different AWS account.
  • Security

    • You can use AWS KMS to encrypt data written to a virtual tape.
    • Storage Gateway uses Challenge-Handshake Authentication Protocol (CHAP) to authenticate iSCSI and initiator connections. CHAP provides protection against playback attacks by requiring authentication to access storage volume targets.
    • Authentication and access control with IAM.
  • Compliance

    • Storage Gateway is HIPAA eligible.
    • Storage Gateway in compliance with the Payment Card Industry Data Security Standard (PCI DSS)
  • Pricing

    • You are charged based on the type and amount of storage you use, the requests you make, and the amount of data transferred out of AWS.
    • You are charged only for the amount of data you write to the Tape Gateway tape, not the tape capacity.
  • Limits

    • For File Shares

Description

File Gateway

Maximum number of file shares per Amazon S3 bucket. There is a one-to-one mapping between a file share and an S3 bucket

1

Maximum number of file shares per gateway

10

The maximum size of an individual file, which is the maximum size of an individual object in S3

5 TB

    • For Volumes

Description

Cached Volumes

Stored Volumes

Maximum size of a volume

32 TiB

16 TiB

Maximum number of volumes per gateway

32

32

Total size of all volumes for a gateway

1,024 TiB

512 TiB

    • For Tapes

Description

Tape Gateway

Minimum size of a virtual tape

100 GiB

Maximum size of a virtual tape

2.5 TiB

Maximum number of virtual tapes for a VTL

1,500

Total size of all tapes in a VTL

1 PiB

Maximum number of virtual tapes in archive

No limit

Total size of all tapes in a archive

No limit

Sources: 
https://docs.aws.amazon.com/storagegateway/latest/userguide/
https://aws.amazon.com/storagegateway/features/
https://aws.amazon.com/storagegateway/pricing/
https://aws.amazon.com/storagegateway/faqs/

***

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