CERN CTA TAPE REST deployment plans

• start with LHCb
  • already using HTTP transfer + xroot check on tape
• move other experiments to TAPE REST next week
  • make CTA ready for TAPE REST transfers
    • Julien is in touch with ATLAS DDM Ops team
    • it is up to experiment to decide when they move to TAPE REST
    • ATLAS plans to move soon
  • glitch in check-on-tape found in Rucio/FTS (needs to be resolved for CMS)
• DAQ stays with xroot

Tape Archive Metadata (tape collocation and scheduling hints)

• Tape REST API & Tape Archive Metadata to be managed in Github repo. 
  • This will host documents (e.g.: PDF), documentation with important links, contact address and issues
  • Issues will be used as discussion and dissemination place
  • Best candidate: https://github.com/wlcg-storage
• Tape REST API & Tape Archive Metadata will be documented in different PDFs
  • A mention/reference from one PDF to the other will be added
• Discussed within group of FTS & CTA & dCache developers
  • work in progress - trying to understand experiment requirements and use-cases
    • define dataset collocation
    • needs to demonstrate that T1 gets sufficient metadata to profit from this project (FZK tests)
  • StoRM - currently no need for this interface
    • would like to see what is in standard
    • github page will be used to come with standard
  • in future there will be plugin interface for Rucio to provide these metadata

Tape transfers with token

• storage.stage scope not yet implemented
  • definition: Read the data, potentially causing data to be staged from a nearline resource to an online resource. This is a superset of storage.read.
  • needs to be discussed in more details
  •  implement as storage.read with permission to "bringonline" / use storage TAPE REST API