Coordinating Node RequirementsΒΆ

This list of requirements for Coordinating Node functionality was developed during a brainstorming session at the 20090602 ABQ VDC-TWG meeting.

Todo

Estimate some times for the unknowns here.

  • IDs not discoverable until all CNs have confirmed copy

  • Metadata searches return in max xxx secs

  • CN can store and search > xxx metadata records

  • CN can store and search multiple metadata standards - specifically (list Metadata_formats_of_interest.txt)

  • CN can load-balance to maximize performance

  • Any xxx CNs can be offline without affecting D1 services

  • xxx concurrent transactions can be supported - different for different types of transaction e.g. delete vs. insert

  • Each CN should be available xxx% time

  • CN should expose MD in search within xxx secs of insert by MN

  • CN services should be designed to be independently scalable

  • CN services should be geographically replicated

  • CN have complete metadata copies from all MNs

  • D1 should be TRAC and/or DRAMBORA trusted repositories

  • CN should respect replication policies of MNs

  • CN should ensure that any given data set is available at any time (subject to policy restrictions) even when xxx% of MNs are offline

  • CNs must validate that: - data are available at all replicas - replicas are valid

  • CNs ensure that data are available in current formats (data format upgrade?)

  • CNs should be economical to run and maintain

  • CNs should be able to be remotely administered

  • CNs should be secure and deflect malicious intent

  • CNs should provide services to detect rogue data (viruses, copyright, )

This material is based upon work supported by the National Science Foundation under Grant Numbers 083094 and 1430508.

Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.