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Storage

Your home folder on proof is quite large, but it could be not enough for your output.

Milano storage resources

storage_tmp (naboo)

/storage_tmp/atlas is the scratch directory you can use freely. The main difference with your home directory is that there is no backup, so if you overwrite a file there is no way to restore the previous version.

storage_tmp is reachable from outside using xrootd using the entry point root://naboo.mi.infn.it//mnt/data/storage_tmp, for example

xrdfs root://naboo.mi.infn.it/ ls /mnt/data/storage_tmp/atlas

s3 object storage

Object storage is a different way to store data different from a file system. It is possible to interact with that (e.g. upload/download files) with the s3 program. ROOT is able to read from an object storage (s3 or gs). It is possible to create a simple HTTP URL to read the resource remotely. See the dedicated page.

To obtain the ID and the key to access the storage in Milan you have to send an email to grid-help@mi.infn.it.

CERN storage resources

Cernbox

CERN gives you 1 TB of storage with cernbox. It is made by:

  • eos storage: this is the real storage, it is reachable in several ways, for example with cernbox application (desktop/mobile/web), xrootd or from a mounted directory on lxplus
  • cernbox client: when installed on your computer you can choose to synchronize some folders locally (similar to Dropbox and other software)
  • web application client: if you open https://cernbox.cern.ch you can manage your files online (open some formats, set the sharing with other users, ...)