Day 3 Update - August 20th, 2014 - The Neon cluster is back in production. The new nodes that were added will not be available for another few days as we put them through more testing. Please let us know if there are any issues.
Day 2 Update - August 19th, 2014 - Work continues to progress as expected. All new systems have been installed and cabling has been completed. Initial network and performance testing are underway and will run overnight.
Day 1 Update - August 18th, 2014 - Work is currently progressing as expected. The vendor arrived on site as planned and the Neon cluster was turned off for the upgrade. By day's end additional power capacity had been added, the Infiniband network was dismantled in preparation for upgrade, and all copper cabling for the expansion was completed.
The Neon HPC system will be offline from 7:00AM on August 18th until 7:00AM on August 21st. This outage is necessary to expand the capacity of the Neon system. Upgrade details are available in this article: http://hpc.uiowa.edu/recent-news/neon-hpc-cluster-expansion
Data Storage: During this outage Neon scratch storage will not be available. Neon home account storage will be accessible via CIFS (Windows Desktop Mounts). We do not anticipate outages for other research data storage.
Why does the upgrade require so much down time? - The upgrade requires expanding and restructuring the 40Gb Infiniband network on the system. This requires modifications to all switches in the Infiniband fabric. The upgrade also installs 72 new servers which must be racked, cabled, and tested.
If you have any questions or concerns about this outage please contact firstname.lastname@example.org