HYDIN0905W (OP0905) Partition (partition usage) entered overcommit state because the partition usage exceeded allocated partition size.

Explanation

The partition usage is above the allocated partition size. It started using cache partition 0 capacity. This state may cause heavy Throttling to Host write.

Operator response

Increase the tape attach cache partition size to exit overcommit sate or make enough free space in cache partition 0 to avoid heavy Throttling.