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LCLS provides space for all your experiment's data at no cost for you. This includes the measurements as well as the data derived from your analysis. Your raw data are available as XTC files or, on demand, as HDF5 files.

Short-term Storage

All your data is available on disk for one year after data takingThe LCLS data policy is described here. The path name of the experiment data is /reg/d/psdm. The data files are currently stored in a Lustre file system. Each experiment is allocated three directories: xtc, scratch and hdf5. The xtc directory contains the raw data from the DAQ system, hdf5 directory is for data files in HDF5 format. Contents of xtc and hdf5 directories are archived to tape. The scratch directory is not backed up. Please write the output of your analysis to the scratch area and not in your NFS space. Keep your analysis code under your NFS home or under your NFS group space (if you have one). Your NFS space is backep up. Please try to not keep more than 10GB under your NFS home or we may ask you to clean up.

Long-term Storage

After one year, your data files are removed from disk. The XTC and HDF5 files remain stored on tape for up to 10 years. LCLS may restore your data from tape back to disk for you to access. Send an email to pcds-help@slac.stanford.edu to have your data restored to disk. Restoring the data to disk more than once will require the approval of the LCLS management.

Data Export

There is a web interface to the experimental data accessible via

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