Log entry time 13:20:33 on September16,2004

Entry number 17

E166 data is organized into disk data files, where one file corresponds

to a run.  A run is started with a begin run command and ended with

an end run command.  The E166 data files is stored on a large hard

drive attached to the DAQ computer.  The data files are also backed

up to a NFS file system.  This is done by a cron job executing on

a Linux computer every 15 minutes, which copies all data files which

have not yet been copied to the NFS file system.  The cron job maintains

two files, which summarize its activities:

  /afs/slac/g/e166/data/donelog.txt

  /afs/slac/g/e166/data/donelist.txt

The file donelog.txt is a log of what the job is doning.  The file

donelist.txt contains a line of text for each file copied, which shows

the time when the file was copied, file name, and file size in bytes.

The NFS file system is organized as follows:

  /nfs/slac/g/esa/e166/data1

  /nfs/slac/g/esa/e166/data2

where data1 is the subdirectory for the October data taking and data2

will be used for the January data taking.