A company has deployed multiple block service applications on the same Huawei distributed storage device, including daily backup, database sorting, and bill cycle settlement. The administrator finds…

A company has deployed multiple block service applications on the same Huawei distributed storage device, including daily backup, database sorting, and bill cycle settlement. The administrator finds that these services will consume system resources extremely during a specific period of time. If It is the business that occurs during working hours and will affect other interactive classes. The administrator uses the QoS feature to limit the consumption of storage resources by these services according to the time period in which they occur, so as to avoid affecting production services or interactive services. Which resources should administrators consider limiting? (Multiple choice)