Finding existing embedding data


Embedding data were produced for each embedding request in the STAR Simulations Request page.
Normally, they will be stored in RCF NFS disks for a while for end users to do their analysis.
However, NFS disk space is very limited, and we have new requests constantly, the data will be finally moved
from disks to HPSS for permanent storage on tape, but they can be restaged to disk for analysis later.

In order to find the existing embedding either on disks or in HPSS. Please follow the procedures below:

1) Find the request ID of a particular request that you are interested in, in the STAR Simulations Request page.
    You can use the "Search" box at the top right of this page. Once you find the entry, look at the 'Request History' tab for more information, usually the original NFS data directory (when the data was first produced) can be found there.

2) Currently, the RCF NFS disks for embedding data are /star/embed and /star/data18.
    For the data directories of each request, please logon to RCF, look at '/star/embed' or '/star/data18' to see whether the following directories exist:

/star/embed/embedding/${Trigger set name}/${Embeded Particle}_${fSet}_${RequestID}/
/star/data18/embedding/${Trigger set name}/${Embeded Particle}_${fSet}_${RequestID}/

3) If they exist, you can further check whether all the ${fSet} from 'fSet min' to 'fSet max' are there. If all exist, 
    you can start to use it. If none of them are there or only some fraction of 'fSet' are there, write to the embedding list
    and ask the Emebedding Coordinator to restage it to there from HPSS.

4) If you can not find the embedding data in this directory, the data must be in HPSS. Unfortunately, there is not a full list of data stored in HPSS yet. (For some data produced at RCF, Lidia maintains the list of embedding samples produced at RCF.) Please write to the embedding list, provide the request ID, Particle Name, file type (minimc.root, MuDst.root or event/geant.root), and ask the Embedding Coordinator to restage the data to NFS disk for you.