ARC Maintenance Outages
ARC systems are taken offline periodically to perform essential maintenance tasks which are unreasonable to perform during normal operations. During these outages, the systems and storage will be inaccessible to researchers and students and jobs will not run.
Regular Cycle
Starting in 2023, ARC established an annual senquence of maintenance outages at regular intervals to help make these service interruptions more predictable. Each year there will be three planned maintenance outages. The exact dates will vary from year to year but follow this pattern:
TinkerCliffs / Owl / Falcon
Maintenance |
Occurence |
Duration |
|---|---|---|
Winter |
Two weeks before the start of the Spring Semester |
4 days |
Summer |
Mid-May, 1-2 weeks after VT Spring commencement |
4 days |
Fall |
Early-August, 2 weeks before start of classes |
3 days |
CUI
Maintenance |
Occurence |
Duration |
|---|---|---|
Winter |
Mid-January |
5 days |
Summer |
Late-May |
5 days |
Fall |
Mid-August |
5 days |
Biomed
Maintenance |
Occurence |
Duration |
|---|---|---|
Winter |
Late-Jnauary |
5 days |
Summer |
Late-May - Early June |
5 days |
Fall |
Late-August |
5 days |
2026 Scheduled Maintenance Dates
Note
These tentative dates are subject to changes in the VT academic calendar or to meet changing conditions such as VT restricted maintenance dates.
Season |
Systems |
Dates |
Scope |
|---|---|---|---|
Winter |
TinkerCliffs / Owl / Falcon |
January 5-8, 2026 (M-Th) |
Clusters and storage |
Winter |
CUI |
January 12-16, 2026 (M-F) |
Cluster and storage |
Winter |
Biomed |
January 19-23, 2026 (M-F) |
Cluster and storage |
Summer |
TinkerCliffs / Owl / Falcon |
May 18-21, 2026 (M-Th) |
Clusters and storage |
Summer |
CUI |
May 25-29, 2026 (M-F) |
Cluster and storage |
Summer |
Biomed |
June 1-5, 2026 (M-R) |
Cluster and storage |
Fall |
TinkerCliffs / Owl / Falcon |
August 10-12, 2026 (M-W) |
Clusters and storage |
Fall |
CUI |
August 17-21, 2026 (M-F) |
Cluster and storage |
Fall |
Biomed |
August 24-28, 2026 (M-F) |
Cluster and storage |
2025 Scheduled Maintenance Dates
Note
These tentative dates are subject to changes in the VT academic calendar or to meet changing conditions such as VT restricted maintenance dates.
Systems |
Dates |
Scope |
|---|---|---|
Biomed |
September 22-25, 2025 (M-R) |
Cluster and storage |
CUI |
September 15-19, 2025 (M-R) |
Cluster and storage |
TinkerCliffs / Owl / Falcon |
August 18-20, 2025 (M-W) |
Clusters and storage (see notes) |
TinkerCliffs / Owl / Falcon |
May 19-23, 2025 (M-F) |
Clusters and storage (see notes) |
Owl / Falcon |
January 6-8, 2025 (M-W) |
Clusters and storage (see notes) |
TinkerCliffs |
January 6-10, 2025 (M-F) |
Tinkercliffs cluster reprovision with new OS |