Evaluate external 3rd party data stores like STFC/IRIS echo and DynaFed for user data.

[Zarquan]

If our users can read and write data from an external archive, S3, VOSpace or Rucio, then we don't need to implement the user data management side ourselves.

[Zarquan]

If we provide the tools to import and export data to/from an external S3 service, then our users can store their data in that.

• UK users who have accounts on the STFC/IRIS echo and DynaFed services can store their data there.
• Other users can create an Amazon S3 account and store their data there.

All we would need to provide would be how-to instruction manuals "how to export your data to your DynaFed account" and "how to export your data to your Amazon S3 account".

[Zarquan]

Simple implementation would be to use the S3 command line client from a %sh notebook to push/pull data from an external S3 service. To develop this we would need accounts on the target services and document how to use them.

1. A test account on Amazon S3
2. A test account on the IRIS echo service

[Zarquan]

Duplicate of #246.