On-chain Retrieval Expectations

[willscott]

Discussion: #861 Rendered version: here

This FIP proposes a set of retrieval SLA ‘tiers’. These tiers identify the ‘category’ of data - if it is fully offline, meant for low-volume-retrieval archival usage, or for higher bandwidth activity. The consensus part of this FIP is a proposal to encode the retrieval SLA tier as part of a deal proposal. Standardizing retrieval expectations in this way allows storage providers to apply appropriate policies and pricing to deals.

[kaitlin-beegle]

Overall I think that this topic should be an FRC, but we can take that to the discussion threads.

I've attempted part of an editorial review on the assumption that it really needs a core protocol FIP, but overall this is missing quite a bit of substance in the specification. When that is firmed up, we'll better be able to describe what ought to be covered in the "considerations" sections.

FWIW, this was also my comment to @willscott after seeing his team's presentation during LabWeek. I've asked him to add more information about why these flags should be a network prerogative, rather than a standard.