A method, implemented at a computer system that includes at least one processor, for adaptively managing input/output (I/O) operations to one or more second storage nodes that are operating in a reduced throughput mode, while maintaining synchronization of nodes in a resilient group of storage nodes that comprise the one or more second storage nodes and at least one other storage node, the method comprising: classifying one or more first storage nodes in the resilient group of storage nodes as operating in a normal throughput mode, based on determining that each of the one or more first storage nodes are operating within one or more corresponding normal I/O performance thresholds for the respective first storage node, wherein at least one of the one or more normal I/O performance thresholds for the respective first storage node are determined based on past I/O performance of the respective first storage node; classifying the one or more second storage nodes in the resilient group of storage nodes as operating in a reduced throughput mode, based on determining that each of the one or more second storage nodes are operating outside one or more corresponding normal I/O performance thresholds for the respective second storage node, wherein at least one of the one or more of normal I/O performance thresholds for the respective second storage node are determined based on past I/O performance of the respective second storage node; and while the one or more second storage nodes are classified as operating in the reduced throughput mode: queuing a read I/O operation for the resilient group of storage nodes, including, based on the one or more second storage nodes operating in the reduced throughput mode, prioritizing the read I/O operation for assignment to the one or more first storage nodes, the read I/O operation being prioritized to the one or more first storage nodes to reduce I/O load on the one or more second storage nodes while operating in the reduced throughput mode; and queuing one or more write I/O operations to the one or more second storage nodes even though they are in the reduced throughput mode, the one or more write I/O operations being queued tc the one or more second storage nodes to maintain synchronization of the nodes within the resilient group of storage nodes while operating in the reduced throughput mode. classifying one or more first storage nodes in the resilient group of storage nodes as operating in a normal throughput mode, based on determining that each of the one or more first storage nodes are operating within one or more corresponding normal I/O performance thresholds for the respective first storage node, wherein at least one of the one or more normal I/O performance thresholds for the respective first storage node are determined based on past I/O performance of the respective first storage node; classifying the one or more second storage nodes in the resilient group of storage nodes as operating in a reduced throughput mode, based on determining that each of the one or more second storage nodes are operating outside one or more corresponding normal I/O performance thresholds for the respective second storage node, wherein at least one of the one or more of normal I/O performance thresholds for the respective second storage node are determined based on past I/O performance of the respective second storage node; and while the one or more second storage nodes are classified as operating in the reduced throughput mode: queuing a read I/O operation for the resilient group of storage nodes, including, based on the one or more second storage nodes operating in the reduced throughput mode, prioritizing the read I/O operation for assignment to the one or more first storage nodes, the read I/O operation being prioritized to the one or more first storage nodes to reduce I/O load on the one or more second storage nodes while operating in the reduced throughput mode; and queuing one or more write I/O operations to the one or more second storage nodes even though they are in the reduced throughput mode, the one or more write I/O operations being queued tc the one or more second storage nodes to maintain synchronization of the nodes within the resilient group of storage nodes while operating in the reduced throughput mode. queuing a read I/O operation for the resilient group of storage nodes, including, based on the one or more second storage nodes operating in the reduced throughput mode, prioritizing the read I/O operation for assignment to the one or more first storage nodes, the read I/O operation being prioritized to the one or more first storage nodes to reduce I/O load on the one or more second storage nodes while operating in the reduced throughput mode; and queuing one or more write I/O operations to the one or more second storage nodes even though they are in the reduced throughput mode, the one or more write I/O operations being queued tc the one or more second storage nodes to maintain synchronization of the nodes within the resilient group of storage nodes while operating in the reduced throughput mode.