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| Paper: |
The ALMA Front-end Archive Setup and Performance |
| Volume: |
434, Astronomical Data Analysis Software and Systems XIX |
| Page: |
457 |
| Authors: |
Wicenec, A.; Chen, A.; Checcucci, A.; Jeram, B.; Meuss, H.; Persson, A.; Burgos, P.; Cirami, R. |
| Abstract: |
The ALMA front-end archive system has to capture up to 64 MB/s for a period of several days plus the data of about 100,000 monitor points from all 66 antennas and the correlators. The main science data is delivered through corba based audio/video streams and finally stored on SATA disk arrays hosted on 6 computers and controlled by 12 daemons. All data is collected by software components running on computers in the antennas and then sent through dedicated fiber links to the Array Operations Site at 5000 m and from there to the Operations Support Facility (OSF) at 3000 m elevation. The various hardware and software components have been tuned and tested to be able to meet the performance requirements. This paper describes the setup and the various components in more detail and gives results of various test runs. |
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