OSiRIS continues, best effort, through February 2027
OSiRIS storage, and the HORUS computing service built on it, continue on a best-effort basis through February 2027. News and user information for both services are now posted at horus-ci.org.
OSiRIS has run in best-effort mode since its NSF project ended in August 2021. In September 2025 we announced on horus-ci.org that OSiRIS and HORUS would stop on 31 August 2026. That did not happen: both services are running, and they will continue on a best-effort basis through February 2027.
What best effort means
- The services stay up and we keep maintaining them, but there is no guaranteed availability or response time.
- Support continues by email: horus-help@umich.edu.
- Keep your own copy of any data you can’t afford to lose.
Looking beyond February 2027
We may move the University of Michigan hardware to another location during February 2027, so that best-effort service can continue after that. Details, including any downtime, will be posted on horus-ci.org as soon as they are confirmed. If your work depends on OSiRIS after February 2027, please tell us at horus-help@umich.edu.
The full update is on horus-ci.org: OSiRIS and HORUS continue, best effort, through February 2027.
Thank you, Shawn McKee for the OSiRIS and HORUS projects
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