Personal scratch and storage folder (/discofs/username)
=======================================================

About
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Your personal scratch and storage folder is located at ``/discofs/username``, where ``username`` is your Discoverer HPC username (the account name). Physically, that folder lives on `Luster file system`_, which is able to handle high I/O loads. Your running jobs should be configured to write there their output files.


Size/Quota
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.. note:: 100 GB of personal disk space (quota) on /discofs file system and up to 13000000 files and folders.

Each active user, regardless of the number of projects he or she contributes to, receives **100 GB of personal disk space (quota) on /discofs file system,** unless another number is negotiated. That storage space cannot contain more than 13000000 files and folders. The utilization of the personal user disk space on ``/discofs`` is estimated as the sum of the size of all files on that file system that belong to the primary POSIX group of the user. By default, the user is supposed to store all files owned by his/her primary POSIX group in the ``/discofs/username`` folder.

To check the current user disc space utilization on ``/discofs``, execute the following command line on the login node (replace ``username`` with your actual username):

.. code-block:: bash

 lfs quota -g username /discofs

*on Discoverer HPC, the name of the primary POSIX group always coincides with the username*

The document :doc:`calculating_the_disk_usage_basics` explains how to interpret the numeric information provided by the quota check.

Data retention policy
---------------------

The files stored in ``/discofs/username`` are retained for 45 days after the user has been deactivated. Afterwards, they undergo a wipe out.


Help
----

If you experience issues with accessing your scratch folder and the content stored there, contact the Discoverer HPC support team (see :doc:`help`).

.. _`Luster file system`: https://en.wikipedia.org/wiki/Lustre_(file_system)