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====== Storage on Aurora ======

Storage in the Aurora cluster is organized as detailed by Lunarc. Read the following: 
http://lunarc-documentation.readthedocs.io/en/latest/quick_reference/#file-systems

The home folders are maintained and backed up by Lunarc, and they are in a special storage machine dedicated to users.

===== Basic rules =====

Please follow these rules to keep the storage tidy.

  - Whenever you need to move data to one of the shared folders below,\\ **create a folder with a name than can be understood by everyone** and put the data in there.
  - If the data has been generated by you or if it is for your exclusive use, **create a folder with your username** to accomodate the data. \\ In this way you keep your data away from unwanted people and you can set all the permissions you want on it.
    * Data found outside a folder named after a user it is a good candidate to be deleted. Of course there can be exceptions when needed.
  - Remove data that you don't use, for example from the ''scratch'' folders. Be kind to your colleagues! storage has a cost.
  - Follow the instructions at [[aurora_cluster:moving_data|Moving Data to and from the Aurora cluster]] when you start moving data around.
===== Nuclear, Particle and Theoretical Physics =====

==== Dedicated Shared storage server on Aurora ====

In particular, the HEP nodes dedicated storage usable by members of all divisions is accessible on hep nodes ''au[193-216]'' at this path:

  /projects/hep/nobackup/
  
:!: ''/project/hep/fs2'' is a symbolic link to ''/project/hep/nobackup''
  
The organization of data in the above folder is as follows, and users are encouraged to enforce it:

^ Folder name ^  Folder purpose ^ Description ^ Subfolders ^
^ **software** | Application software  | This folder hosts software that is not accessible via cvmfs (see later). This usually includes user/project specific libraries and frameworks. | ''/np'' for Nuclear Physics users |
^ ::: | ::: | ::: |''/pp'' for Particle Physics users |
^ ::: | ::: | ::: |''/tp'' for Theoretical Physics users |
^ **shared** | Data that will stay for long term | This folder should be used for long-term stored data. For example, long-term data sets or data needed for the whole duration of a phd project or shared among people belonging to the same research group. | ''/np'' for Nuclear Physics users |
^ ::: | ::: | ::: |''/pp'' for Particle Physics users |
^ ::: | ::: | ::: | ''/tp'' for Theoretical Physics users |
^ **scratch** | Data that will stay for short term | This folder should be used for short-term stored data. For example, data needed for a week long calculation or temporary calculation. This folder should be considered unreliable as its contents will be purged from time to time. The cleanup interval is yet to be decided | ''/np'' for Nuclear Physics users |
^ ::: | ::: | ::: | ''/pp'' for Particle Physics users |
^ ::: | ::: | ::: | ''/tp'' for Theoretical Physics users |


Other special folders:

^ ''/cvmfs'' | Special folder containing CERN maintained software | user cannot write | This special folder is dedicated to software provided by CERN. This folder is read-only. Usually the content of this folder are managed via specific scripts that a user can run. If you need to add some software that you cannot find, contact the administrators. | ''/geant4.cern.ch'' for Nuclear Physics users |
^ ::: | ::: | ::: | ::: | ''/atlas.cern.ch'' for Particle Physics users |

==== Dedicated storage for Particle Physics ====

Particle Physics can share data to the [[:iridium_cluster|Iridium Cluster]] and has two additional storage servers listed below for their exclusive use.

Users not belonging to the division of Particle Physics might be warned to remove their data from those storages, unless otherwise agreed with the Particle Physics division.

=== Storage on Iridium ===

The Iridium storage is still accessible at

  /projects/hep/iridium/
  
Please refer to the documentation at [[iridium_cluster:basic_information]] for it.

=== Additional dedicated storage ===

There are two storage servers installed for the **exclusive use of Particle Physics**.
The recommendation is to use these instead of ''/project/hep/nobackup'' so to give space to the other users of it.

:!: ''/project/hep/fs2'' is a symbolic link to ''/project/hep/nobackup''

^ Server ^ Size (Max) ^ Storage paths ^ Intended usage ^ Notes ^
| fs3 | 35TB  | ''/projects/hep/fs3/shared'' | data that is meant to stay for long time | Very fast disk suitable for calculations |
| fs4 | 35TB  | ''/projects/hep/fs4/scratch'' | temporary data | Very fast disk suitable for calculations |
| fs5 | 125TB | ''/projects/hep/fs5/shared'' | data that is meant to stay for long time | Slow disk suitable for low read/write frequency |
| ::: | :::   | ''/projects/hep/fs5/scratch'' | temporary data | ::: |
| fs6 | 125TB | ''/projects/hep/fs6/shared'' | data that is meant to stay for long time | Slow disk suitable for low read/write frequency |
| ::: | :::   | ''/projects/hep/fs6/scratch'' | temporary data | ::: |

=== Grid storage ===

Lunarc hosts a grid storage for ATLAS. Currently we are migrating from a 20TB storage to a 100TB.

The local storage name is
  
  
One can interact through it using the Rucio client. 

Details on how to access this storage are at this page: http://www.hep.lu.se/grid/localgroupdisk.html

More on how to do transfers at [[aurora_cluster:moving_data | Moving data to and from the cluster]]


===== Mathematical Physics =====

At the moment, only the user folders are available. We are negotiating a 10TB common storage with Lunarc. More information is soon to come.
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