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Evaluation of the Performance of Modern Disk Drives for Buffering and Transferring VLBI Data

I. A. Bezrukov, A. I. Salnikov, V. V. Vasilyev, A. V. Vylegzhanin

Transactions of IAA RAS, issue 70, 34–38 (2024)

Keywords: HDD and SAS disk drives, I/O operations, IOPS, the FreeBSD operating system, buffering and transfer of VLBI data

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Abstract

Currently, the Institute of Applied Astronomy Russian Academy of Science operates 12 buffering and data transmission systems in three observatories (“Svetloye” in Leningrad Region, “Zelenchukskaya” in the Republic of KCR, “Badary” in the Republic of Buryatia), which include about 250 drives on solid magnetic disks of the 3.5" form factor. The main task of buffering and transmission systems is to provide the high-speed registration of observational data, temporary storage of a large amount of data and prompt transmission of this data to the center for correlation processing of the IPA RAS, as well as to international processing centers. A significant increase in the volume of observational data imposes high requirements on the reliability and performance of disk drives of buffering and data transmission systems. This assessment was presented in the paper entitled "Performance study of the disk subsystem of the buffering and data transfer system" published in 2018. In accordance with the recommendations of the studies conducted, the installation of SAS and NearLine SAS (NL-SAS) HDD drives with a capacity of 6TB was carried out in all the buffering and data transfer systems. To provide observations with an increased amount of data, it is planned to use modern disk drives with a volume of more than 6 TB on hard magnetic disks HDD and solid-state disk drives SSD. It should be noted that the volume and reliability of disk drives of both types from different manufacturers has now grown significantly. The paper presents the results of testing new versions of disk drives for buffering and data transfer systems that provide both high read/write speeds and have a sufficiently large disk volume.

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I. A. Bezrukov, A. I. Salnikov, V. V. Vasilyev, A. V. Vylegzhanin. Evaluation of the Performance of Modern Disk Drives for Buffering and Transferring VLBI Data // Transactions of IAA RAS. — 2024. — Issue 70. — P. 34–38.

@article{bezrukov2024,
  abstract = {Currently, the Institute of Applied Astronomy Russian Academy of Science operates 12 buffering and data transmission systems in three observatories (“Svetloye” in Leningrad Region, “Zelenchukskaya” in the Republic of KCR, “Badary” in the Republic of Buryatia), which include about 250 drives on solid magnetic disks of the 3.5" form factor. The main task of buffering and transmission systems is to provide the high-speed registration of observational data, temporary storage of a large amount of data and prompt transmission of this data to the center for correlation processing of the IPA RAS, as well as to international processing centers. A significant increase in the volume of observational data imposes high requirements on the reliability and performance of disk drives of buffering and data transmission systems. This assessment was presented in the paper entitled "Performance study of the disk subsystem of the buffering and data transfer system" published in 2018. In accordance with the recommendations of the studies conducted, the installation of SAS and NearLine SAS (NL-SAS) HDD drives with a capacity of 6TB was carried out in all the buffering and data transfer systems. To provide observations with an increased amount of data, it is planned to use modern disk drives with a volume of more than 6 TB on hard magnetic disks HDD and solid-state disk drives SSD. It should be noted that the volume and reliability of disk drives of both types from different manufacturers has now grown significantly.
The paper presents the results of testing new versions of disk drives for buffering and data transfer systems that provide both high read/write speeds and have a sufficiently large disk volume.},
  author = {I.~A. Bezrukov and A.~I. Salnikov and V.~V. Vasilyev and A.~V. Vylegzhanin},
  doi = {10.32876/ApplAstron.70.34-38},
  issue = {70},
  journal = {Transactions of IAA RAS},
  keyword = {HDD and SAS disk drives, I/O operations, IOPS, the FreeBSD operating system, buffering and transfer of VLBI data},
  pages = {34--38},
  title = {Evaluation of the Performance of Modern Disk Drives for Buffering and Transferring VLBI Data},
  url = {http://iaaras.ru/en/library/paper/2188/},
  year = {2024}
}

TY  - JOUR
TI  - Evaluation of the Performance of Modern Disk Drives for Buffering and Transferring VLBI Data
AU  - Bezrukov, I. A.
AU  - Salnikov, A. I.
AU  - Vasilyev, V. V.
AU  - Vylegzhanin, A. V.
PY  - 2024
T2  - Transactions of IAA RAS
IS  - 70
SP  - 34
AB  - Currently, the Institute of Applied Astronomy Russian Academy of
Science operates 12 buffering and data transmission systems in three
observatories (“Svetloye” in Leningrad Region, “Zelenchukskaya” in
the Republic of KCR, “Badary” in the Republic of Buryatia), which
include about 250 drives on solid magnetic disks of the 3.5" form
factor. The main task of buffering and transmission systems is to
provide the high-speed registration of observational data, temporary
storage of a large amount of data and prompt transmission of this
data to the center for correlation processing of the IPA RAS, as well
as to international processing centers. A significant increase in the
volume of observational data imposes high requirements on the
reliability and performance of disk drives of buffering and data
transmission systems. This assessment was presented in the paper
entitled "Performance study of the disk subsystem of the buffering
and data transfer system" published in 2018. In accordance with the
recommendations of the studies conducted, the installation of SAS and
NearLine SAS (NL-SAS) HDD drives with a capacity of 6TB was carried
out in all the buffering and data transfer systems. To provide
observations with an increased amount of data, it is planned to use
modern disk drives with a volume of more than 6 TB on hard magnetic
disks HDD and solid-state disk drives SSD. It should be noted that
the volume and reliability of disk drives of both types from
different manufacturers has now grown significantly.  The paper
presents the results of testing new versions of disk drives for
buffering and data transfer systems that provide both high read/write
speeds and have a sufficiently large disk volume.
DO  - 10.32876/ApplAstron.70.34-38
UR  - http://iaaras.ru/en/library/paper/2188/
ER  -