| 摘要 |
The disclosed technology identifies bottlenecks in a hierarchical storage subsystem and, based upon the rate at which data may be transmitted through a particular bottleneck, determines the smallest number of disk drives required to match that transmission rate. If the required number of disks is less than the total number of disks, only a subset of the total number are maintained in an active state with the remainder places in either a“standby”or“off”mode. In this manner, overall system power consumption is reduced. In one embodiment, the disclosed techniques are implemented by active disk management at high level of storage infrastructure. |
