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habrok:migration:migration_habrok [2023/07/03 08:51] – [Data migration] fokkehabrok:migration:migration_habrok [2025/01/21 09:26] (current) – camarocico
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 Please see [[habrok:additional_information:known_issues|]] Please see [[habrok:additional_information:known_issues|]]
 +
 +===== FAQ =====
 +
 +==== Will my Peregrine account work on Hábrók? ====
 +
 +Because there are quite a number of inactive accounts on Peregrine, we have decided not to automatically migrate the accounts to Hábrók, so your account on Peregrine will not automatically work on Hábrók. 
 +
 +If you want to use the new cluster, you need to request access to it by using the  [[https://iris.service.rug.nl/|Self-Service Portal IRIS]]. 
 +
 +Please go to Research and Innovation Support → Computing and Research Support Facilities → High Performance Computing Cluster → Request Hábrók Account.
 +
 +==== Will my data be automatically moved from Peregrine to Hábrók? ====
 +
 +We will not automatically move your data from Peregrine to Hábrók. The filesystems on Peregrine, ''/home'' and ''/data'' will be made available read-only on Hábrók for three months after Peregrine shuts down. You will have this time to move your data to permanent storage on Habrok. 
 +
 +**The data on Peregrine /scratch will not be migrated, since it is temporary space only.**
 +
 +==== How do I migrate data to Habrok? ====
 +
 +The best tool for copying data from one location to the other is ''rsync''. Here is an example showing how to synchronize a directory with files from the Peregrine ''/data'', available under ''/mnt/pg-data'' on the login nodes to the new ''/projects'' on Hábrók:
 +<code>
 +rsync -av /mnt/pg-data/p123456/important_data/ /projects/p123456/important_data/
 +</code>
 +Note the slashes at the end of the source and the destination. The following flags have been used:
 +  * ''-a'': archive to copy everything recursively including file ownership and permissions
 +  * ''-v'': verbose to show the progress
 +You can also enable compression using ''-z'', but this will only speed up the transfer of highly compressible data. Since sufficient bandwidth should be available for the transfers compression will probably only add overhead.
 +
 +The best thing about using ''rsync'' is that you can restart the transfer in case of failures, and ''rsync'' will just continue where it stopped.
 +
 +==== How do I migrate data from a group folder to Habrok? ====
 +
 +The group folders will also be available at ''/mnt/pg_data/pg-group'', and we are currently creating new groups on Habrok. These groups will have a similar naming pattern as on Peregrine, e.g. ''pg-group'' becomes ''hb-group''. We will then add the users to these new groups, and the new group will be the owner of the folder ''/mnt/pg_data/pg-group''. From this point, the data can be copied over to Habrok using ''rsync'', as explained above. The location for the group folder on Habrok will be ''/projects/hb-group''.
 +