Page History

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• four tape drives
• two data movers each
  • 1Gb Ethernet per mover
  • Fibre Channel connection to tape drives
  • About a total of 5TB disk cache.
    The data movers use 1GbE to connect to the network and Fibre Channel to connect to the tape drives.

Transferring a single

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About 100GB of single files were transfered from one data server to HPSS. The transfer rate is about 55MB/s for larger files (> 100MB/s). For files below 100 MB rate measurement was accurate as the time resolution was only 1s.

Transfer 8TB of data (test 20090909)

About 8TB of data was transfered from eight servers (~1TB/server). After about 10h transfers started to fail because the disks on the movers were filled. At that time 6.5 TB were transfered.

The average transfer rate from disk to tape was about 78MB/s. Only one tape drive at a time was allowed for writing.