Abstract: A communication interface is capable of adding a connection in response to a request from another information processing apparatus. A memory stores connection information indicating the number of connections being maintained and timing at which communication was last performed for each of the maintained connections. When an increase in the number of maintained connections per unit time exceeds a first threshold and the number of maintained connections also exceeds a second threshold, a processor selects, based on the connection information, at least one connection out of the maintained connections in order from oldest timing, and cuts off the selected at least one connection.

Abstract: An information processing apparatus includes a memory and a processor coupled to the memory. The processor is configured to calculate, for each of first users, time lengths of accesses to data stored in a storage device on basis of start information on start times and finish information on finish times. The accesses are made by a node of each of the first users. The start times are times at which the respective accesses are started. The finish times are times at which the respective accesses are finished. The processor is configured to calculate, for each of second users among the first users, a first sum of the time lengths. The second users are in a logged-in state of being after login and before logout. The processor is configured to determine whether to power on the storage device on basis of the first sum.

Abstract: A communication interface is capable of adding a connection in response to a request from another information processing apparatus. A memory stores connection information indicating the number of connections being maintained and timing at which communication was last performed for each of the maintained connections. When an increase in the number of maintained connections per unit time exceeds a first threshold and the number of maintained connections also exceeds a second threshold, a processor selects, based on the connection information, at least one connection out of the maintained connections in order from oldest timing, and cuts off the selected at least one connection.

Abstract: An information processing apparatus includes a memory and a processor coupled to the memory. The processor is configured to calculate, for each of first users, time lengths of accesses to data stored in a storage device on basis of start information on start times and finish information on finish times. The accesses are made by a node of each of the first users. The start times are times at which the respective accesses are started. The finish times are times at which the respective accesses are finished. The processor is configured to calculate, for each of second users among the first users, a first sum of the time lengths. The second users are in a logged-in state of being after login and before logout. The processor is configured to determine whether to power on the storage device on basis of the first sum.