A method, apparatus, system, and signal-bearing medium that, in an embodiment, register each partition in a logically-partitioned computer to send local events to an aggregation component and register a first partition to send events associated with a group of partitions to the aggregation component. In various embodiments, the group may be all of the partitions or some of the partitions. If the connection to the first partition is unavailable, the first partition is registered to cancel sending events associated with the group, a second partition is selected, and the second partition is registered to send events associated with the group to the aggregation component. If the connection to the first partition is restored subsequent to being unavailable, a determination is made whether to change registration back to the first partition. In this way, in an embodiment, redundant reporting of events is supported while decreasing the number of events reported.