mass-storage/quickstart-mass-storage.md

@@ -40,32 +40,37 @@ For laboratories and platforms quotas, users can contact the [Bioinformatics tea
 
 More details about quotas can be found [here](mass-storage/mass-storage-quota).
 
-## [Disk usage: billing system](mass-storage/mass-storage-billing)
+## [Do I need to pay to store data on the mass storage ?](mass-storage/mass-storage-costs)
 
-The majority of the costs of the mass storage have been covered by a FEDER grant obtained by the GIGA. However, some operating costs are not covered by this grant, such as costs linked to the improvement of the performances, software licenses.
-For this reason, the GIGA decided to give to each research team a certain amount of free space on the mass storage, and to charge any additional space used by them.
-The revenues from these fees will be used exclusively for costs linked to the mass storage management.
+No you don't. However, if you you want to know more about mass storage costs, or if you are applying for a grant for a project that will generate more than 1Tb of data and would like to help improving and increasing the capacity of the GIGA mass storage, please read the [mass storage costs page](mass-storage/mass-storage-costs) of this documentation.
 
-Find more information about this system [here](mass-storage/mass-storage-billing)
 
 ## Good practices
 
+### How to reduce disk usage ?
+
 - **Don't keep several copies of files**
-  All files present in your home or project folders on the mass storage are backed up on a tape library situated at the SEGI (B26). 
-  This means that there are two copies of all your files in two different buildings. 
+  All files stored on the mass storage are backed up on a tape library situated at the SEGI (B26) and another one at the CHU datacentre.
+  This means that there are three copies of all your files in three different buildings.
   If backed up properly, you'll be able to retrieve a file accidentally deleted less than 28 days ago.
   In some circumstances you will even be able to retrieve a previous version of a properly backed up file. To be sure your files are backed up properly, you should read the [**backup policies**](mass-storage/mass-storage-backup-archive) .
 
-- **Use compression tools when possible and group numerous small files in gzip, TAR or DAR archives**
-  You'll find more information about how to compress and group files this [page](mass-storage/mass-storage-compression)
+- **Use compression tools when possible** (we recommend to start compressing files when they are bigger than 200Mb) and **group numerous small files in gzip, TAR or DAR archives** (typically, if you have thousands of related small files in the same folder). You'll find more information about how to compress and group files this [page](mass-storage/mass-storage-compression)
+
+- **Delete temporary/obsolete files** (intermediate files not needed anymore for example)
+
+- Send files you need to keep but do not need to quickly access anymore to the GIGA [**archiving system**](mass-storage/mass-storage-backup-archive#Offline-data-archiving)
+
+### How to keep my data organised ?
 
 - **Keep all the files associated to a project in that project folder and not in your home**
   This will allow all people working on a given project to access these data and work on them. It will also facilitate  the upload of the data to public database when submitting a publication.
 
 - **Name files and directories according to the mandatory rules described below**
-  You'll find more recommendations on data management and file naming [here](mass-storage/mass-storage-management-practices).
 
 
+You'll find more recommendations on data management and file naming [here](mass-storage/mass-storage-management-practices).
+
 
 ## Mandatory rules for file and folder names
 
@@ -129,6 +134,6 @@ graph TB
 
 # [FAQ](faq/FAQ)
 
-If you don't find the information you are looking for in the above sections, don't hesitate to consult the FAQ.
+If you didn't find the information you are looking for in the above sections, don't hesitate to consult the FAQ.
 
 # [Contacts](contacts)