Transfer Appliance is a high-capacity storage device that lets you
transfer and securely ship your data to a Google upload facility, where we
upload your data to Cloud Storage. For Transfer Appliance
capacities and requirements, refer to the
[Specifications page](https://docs.cloud.google.com/transfer-appliance/docs/4.0/specifications.md.txt).
[Video](https://www.youtube.com/watch?v=4g2ntSRU2pI)

## How it works

|---|---|
| ![](https://docs.cloud.google.com/static/transfer-appliance/docs/4.0/images/step_1.png) | **Request an appliance**: We'll work with you to select the appropriate appliance for your requirements. |
| ![](https://docs.cloud.google.com/static/transfer-appliance/docs/4.0/images/step_2.png) | **Upload your data**: Linux and Apple macOS systems mount the NFS share exposed by the appliance. Windows systems use SCP, SSH, or SMB to upload data to the appliance. |
| ![](https://docs.cloud.google.com/static/transfer-appliance/docs/4.0/images/step_3.png) | **Ship the appliance back**: Complete the transfer and seal the appliance. |
| ![](https://docs.cloud.google.com/static/transfer-appliance/docs/4.0/images/step_4.png) | **Google uploads the data**: We upload the data to your Cloud Storage bucket, then wipe the appliance when we're done. |
| ![](https://docs.cloud.google.com/static/transfer-appliance/docs/4.0/images/step_5.png) | **Transfer is complete!** You can now access your data in Google Cloud. |

## Security features

Your data and network security is important. Transfer Appliance helps
ensure that you're connecting a trusted device to your equipment and
network, and secures your data from end to end so that it is read by people
you trust.

To ensure Transfer Appliance is trusted and safe to connect to your
devices, Transfer Appliance offers the following features:

- **Tamper resistant**: Bad actors cannot easily open
  Transfer Appliance's physical case. We also apply
  tamper-evident tags to the shipping case, so that you can visually inspect
  each appliance's integrity prior to opening the package.

- **Ruggedized**: Transfer Appliance's shipping container is
  ruggedized, ensuring your data arrives safely.

- **Trusted Platform Module (TPM) chip**: We validate the TPM's Platform
  Configuration Registers to ensure that the immutable root filesystem and
  software components haven't been tampered with.

- **Hardware attestation**: We use a remote attestation process to validate
  the appliance before you can connect it to your device and copy data to it.
  If anything is amiss, we work with you to quickly send you a new appliance.

To ensure your data is safe during and after transit,
Transfer Appliance uses the following features to protect you:

- **AES 256 encryption**: Your data is encrypted with industry-standard
  encryption to keep it safe.

- **Customer-managed encryption keys**: We use encryption keys that you manage
  using Cloud Key Management Service (Cloud KMS), enabling you to control and secure
  your data prior to shipping an appliance back to us.

- **NIST 800-88 compliant data erasure**: We securely erase your data from
  Transfer Appliance after uploading your data to
  Cloud Storage. You can request a wipe certificate to verify that we've
  wiped your data.

For more information, refer to
[Security and encryption](https://docs.cloud.google.com/transfer-appliance/docs/4.0/security-and-encryption.md.txt).

## Performance

To enable you move data quickly and efficiently,
Transfer Appliance has the following performance features:

- **All SSD drives**: Increased reliability over hard disk drives to ensure
  your transfer is smooth.

- **Multiple network connectivity options**: Quickly move data from your
  devices to Transfer Appliance, using either a 10Gbps RJ45 interface
  or a 100Gbps QSFP28 interface.

- **Scalability with multiple appliances**: You can scale your transfers by
  ordering multiple appliance to increase your transfer speed.

- **Globally distributed processing**: Reduced shipping times to and from
  Google ensures your data transfer to Cloud Storage is quick.

- **Minimal software**: For Linux and Apple macOS systems, copy directly
  to Transfer Appliance by mounting the exposed NFS share on
  the appliance to your workstation, using common software already installed
  on the system. For Microsoft Windows systems, copy directly to
  Transfer Appliance from your workstation using SMB or SCP.

## Online capabilities

Enabling online mode allows you to perform online transfers by streaming data
directly to your Cloud Storage bucket after copying it to your appliance.
Online transfers offer the following benefits:

- **Quickly transfer data to Cloud Storage with low latency**: Online
  transfers are an accelerated method of transferring your data to
  Cloud Storage, omitting the need to wait for your appliance to be shipped
  back to Google before the data is copied to your destination bucket.

- **Connect to multiple appliances**: Online mode allows parallel connectivity
  to multiple appliances.

- **Cost-effective**: Online capability is offered as a low-cost, fully-managed
  method for transferring your data.

- **Secure connection**: Your data is encrypted during online transfers,
  ensuring end-to-end security. After the transfer is complete, your data is
  removed from the appliance.

- **Easy to enable or disable** : You can toggle between online and offline mode
  using simple commands. For more information on how to enable or disable online
  mode, refer to the
  [Online/offline transfer](https://docs.cloud.google.com/transfer-appliance/docs/4.0/online-transfer.md.txt) page.

## Is Transfer Appliance suitable for me?

Transfer Appliance is a good fit for your data transfer needs if:

- You are an existing Google Cloud customer.
- Your data resides in locations that Transfer Appliance is [available](https://docs.cloud.google.com/transfer-appliance/docs/4.0/overview.md.txt#location-availability).
- It would take more than one week to upload your data over the network.

### Other transfer options

Other Google Cloud transfer options include:

- [Storage Transfer Service](https://docs.cloud.google.com/storage-transfer/docs/overview.md.txt) to move data to a
  Cloud Storage bucket from other cloud storage providers or from your
  [on-premises](https://docs.cloud.google.com/storage-transfer/docs/key-terms#on-prem) storage.

- [BigQuery Data Transfer Service](https://docs.cloud.google.com/bigquery/transfer) to move data from software as a
  service (SaaS) applications to BigQuery.

- [Transfer service for on-premises data](https://docs.cloud.google.com/storage-transfer/docs/on-prem-overview) to move data from your
  on-premises machines to Cloud Storage.

## Where is Transfer Appliance available?

Transfer Appliance is available in the following locations:

| Location | TA40 and TA300 (Rackable) | TA40 (Freestanding) | TA300 (Freestanding) |
|---|---|---|---|
| United States | Yes | Yes | Yes |
| European Union member states | Yes | No | No |
| United Kingdom | Yes | No | No |
| Singapore | Yes | No | No |
| Japan | Yes | No | No |
| Canada | Yes | No | No |
| India | Yes | No | No |

For a complete list of countries where Transfer Appliance is available, refer to the Order Appliance page on the Google Cloud console. If you don't find your country listed, reach out to Support at data-support@google.com.

## Data transfer speeds

With a typical network bandwidth of 100 Mbps, 300 terabytes of data takes about
9 months to upload. However, with Transfer Appliance, you can
receive the appliance and capture 300 terabytes of data in under 25 days. Your
data can typically be accessed in Cloud Storage within another 10 business days, all without
consuming any outbound network bandwidth.

> [!NOTE]
> **Note:** This depends on the quality of data. If you have very small files, rehydration takes a long time.

## Example use cases

### Data collection

If you need to transfer data from researchers, vendors, or other sites to
Google Cloud, Transfer Appliance can move that data for you. Once
transferred to [Cloud Storage](https://docs.cloud.google.com/storage) or [BigQuery](https://docs.cloud.google.com/bigquery),
your data is accessible via our Dataflow processing service for machine
learning projects. Google Cloud Machine Learning Engine is a managed service
that enables you to easily build machine learning models, that work on any type
of data, of any size.

### Data replication

Transfer Appliance can assist you in taking advantage of hybrid
architectures, supporting current operations with existing on-premises
infrastructure while experimenting with the cloud. By transferring a copy of
your data to Google Cloud, you can decommission duplicate datasets, test cloud
infrastructure, and expose your data to machine learning and analysis.

### Data migration

Offline data transfer is suited for moving large amounts of existing backup
images and archives to Cloud Storage, which can be stored in ultra low-cost,
highly-durable, and highly available storage classes such as
[Archive Storage](https://docs.cloud.google.com/storage/docs/storage-classes.md.txt#archive). For structured and
unstructured data sets, whether they are small and frequently accessed or huge
and rarely referenced, Google offers solutions like Cloud Storage,
BigQuery, and Managed Service for Apache Spark to store and analyze that data.

## Data handling for the European Union

For customers in the EU, appliances are shipped from Belgium. When
data capture is complete, you ship the appliance to Belgium for data upload.
Your data is then uploaded to a Cloud Storage location in a region
that you have specified. If you choose a destination region within the EU, your
data never leaves the boundaries of the European Union during any part of the
data transfer process.

## What's next?

- [Request Transfer Appliance](https://console.cloud.google.com/transfer/appliance).
- [Learn more about Transfer Appliance pricing](https://cloud.google.com/transfer-appliance/pricing).
- [Review the procedure for using Transfer Appliance](https://docs.cloud.google.com/transfer-appliance/docs/4.0/procedure-guide.md.txt).