Project data migration

docs.it4i/project-data-migration.md

+# PROJECT Storage Implementation
+
+Installation of the PROJECT storage is available from 15.3.
+The PROJECT data storage is a central storage for project's data on IT4Innovations clusters. It is accessible from all IT4Innovations clusters and allows to share data amongst clusters.
+The PROJECT storage utilizes fully redundant design, redundant devices, highly available services, data redundancy, and snaphots.
+
+Storage allocation and access to the storage are based on projects (i.e. computing resources allocations) and project membership.
+A project directory (actually implemented as an independent fileset) is created for every project. Default limits (quotas), default file permissions, and ACLs are set. The project directory life cycle strictly follows the project's life cycle. The project directory is removed after the project's data expiration.
+
+For more detailed information, see the [PROJECT Data Storage][a] section.
+
+## Data Migration From Salomon to PROJECT
+
+With the upcoming decomissioning of the Salomon supercomputer, the PROJECT storage has been used to store a copy of users data located in Salomons's `/scratch/work/project` directory. The initial data migration was an automatic process which ran from 9.1. to 14.3.2021, so it is important that you check and synchronize any remaining data on Salomon's `/scratch/work/project` that were created or modified **after 14.3.2021**, as later this year, both HOME and SCRATCH storages on Salomon will become **permanently inaccessible**.
+
+!!!Rights and permissions
+    The data migration has kept intact all users and groups ownerships, permissions, ACLs, etc. on all files.
+
+### PROJECT Storage Quotas
+
+Default quotas for capacity and amount of inodes per project are:
+
+| PROJECT default quota |        |
+| --------------------- | ------ |
+| Space quota           | 20TB   |
+| Inodes quota          | 5 mil. |
+
+#### Lifting Project Quotas
+
+If you require additional storage space for migration of your data, contact [IT4I support][b].
+
+### Salomon Data Backup
+
+!!!important
+    No backup or data transfer is scheduled for Salomon's storages by IT4I. Make sure that **you save all the relevant data** to external resources or to PROJECT storage before  **Wednesday 30.6.2021, 9:00**. After this date, all data will be **permanently lost**.
+
+### Data Cleanup
+
+The initial data migration ignored default PROJECT's quotas,
+but we strongly recommend that you to delete old data from your PROJECT directory,
+because if your PROJECT directory exceeds the default quota,
+you won't be able to create new data until you free up some space or request addition space allocation.
+
+[a]: ../storage/project-storage.md
+[b]: mailto:support@it4i.cz
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