Transferring data
==================

Globus simplifies transferring large amounts of data between different storage systems.
Compared to traditional methods like ``rsync`` or ``scp``, it offers several advantages:
  
* **Reliability**: Globus automatically resumes transfers if they are interrupted by network issues.
* **Performance**: It uses parallel data streams to achieve higher transfer speeds than most other methods.
* **Convenience**: You can start a transfer and close your laptop. Globus runs in the background and emails you upon completion.


How to Transfer Data
---------------------

The process for transferring data is managed via the `File Manager <https://app.globus.org/file-manager>`_ in your 
browser, which provides a two-pane interface to select a source and a destination.

**Example: Transferring data to Viking**

1.  **Open the two-pane view**: In the `File Manager <https://app.globus.org/file-manager>`_, ensure you are in the 
    two-pane view by clicking the middle icon in the top-right corner. 
2.  **Select your source**: In the left pane, search for and select your source collection (e.g., a 
    `University of York collection <https://app.globus.org/collections?q=UoY&scope=all>`_ or your 
    :ref:`'Personal Collection' <personal-collection>` if transferring from your own machine). Navigate to and select 
    the folder or files you wish to transfer.
3.  **Select your destination**: In the right pane, search for the appropriate **Viking collection** and select it. 
    Navigate to the folder where you want to place the data. The available collections are:

        * `UoY - Viking2 Scratch Projects <https://app.globus.org/file-manager/collections/29929ac0-0e89-435f-abae-bbfe422d7768/overview>`_
        * `UoY - Viking2 Scratch Users <https://app.globus.org/file-manager/collections/ccd1e1d8-9a3c-49b6-9e01-7c1fd863b5ef/overview>`_
        * `UoY - Viking2 Longship Projects SE <https://app.globus.org/file-manager/collections/60dc7322-2782-40b5-8095-93f8de251f8c/overview>`_

4.  **Start the transfer**: Click the blue :guilabel:`Start` button above the left pane to begin the transfer. You will 
    receive a notification that your task has been submitted, and you can monitor its progress in the :guilabel:`Activity` 
    tab.

.. note:: 
    Please be aware that transfers between the Scratch collections (`UoY - Viking2 Scratch Projects <https://app.globus.org/file-manager/collections/29929ac0-0e89-435f-abae-bbfe422d7768/overview>`_ 
    and `UoY - Viking2 Scratch Users <https://app.globus.org/file-manager/collections/ccd1e1d8-9a3c-49b6-9e01-7c1fd863b5ef/overview>`_) 
    and the Longship SE collection (`UoY - Viking2 Longship Projects SE <https://app.globus.org/file-manager/collections/60dc7322-2782-40b5-8095-93f8de251f8c/overview>`_) 
    are not yet functional.


Further assistance
------------------
For a more detailed description including screenshots on how to access collections and perform data transfers, 
please refer to this tutorial: `How To Log In and Transfer Files with Globus <https://docs.globus.org/guides/tutorials/manage-files/transfer-files/>`_