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All your data is available on disk for one year after data taking. The path name 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. Its contents , hdf5 directory is for data files in HDF5 format. Contents of xtc and hdf5 directories are archived to tape. The scratch and hdf5 directories are 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.

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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. Restoring the data to disk more than once will require the approval of the LCLS management.

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