The TAO Assessment Service for the Faculty of Education experienced a service degradation
Students using the service and the staff running the service were affected by this outage
The affected users were experiencing a performance degradation while writing online exams.
Start: 2015/04/09 13:15 Users reported a performance issue with an online exam in the TAO environment.
2015/04/09 13:30 IT support analysts began investigating performance issues.
2015/04/09 15:00 Further investigation determined the storage load balancing was uneven.
2015/04/09 16:15 IT support analysts began to rebalance the load to improve performance.
2015/04/09 17:00 Rebalance was completed.
2015/04/09 18:00 IT support analysts began to redistribute storage of some servers to maximize performance.
2015/04/10 05:30 Redistribution was completed.
End: 2015/04/10 06:50 Service was restored, user verification is pending.
Load balancing of the storage impacted performance of the TAO environment
The affected exams were moved to the eClass environment.
The storage load was manually rebalanced.