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The way users retrieve data has a huge impact on both the time required to get the data and the performance of the system. You should follow these steps if you want to retrieve large amount of data.

Efficiency tips:

  1. Smaller number of tapes (a request accesses) means better request efficiency.
  2. Ideally requests should not access more than 1 tape.
  3. Please read the retrieval efficiency pages

    Licensed and member users should follow the Guidelines to write efficient MARS requests.

  4. To see the progress of your requests you can check the Web API job list.

  5. You can also check the MARS activity.