| 摘要 |
A storage controller is disclosed which may emulate several types of specialized host specific and/or storage device specific storage controllers. The storage controlling system can transfer information between one or more different types of target units and one or more channels of at least one host. The system is provided with a computer, which includes a first interface, a second interface, and a programmable storage controller. The first interface is configured to receive one or more channel adapters which carry one or more channel programs transmitted from the channels of the host. The channel programs may carry data, status information, and commands. The second interface allows input and output to storage facilities which comprise one or more target units. The programmable storage controller may be provided with a device coupled to the channel adapters for translating channel program commands, and determining, from the channel program, a target unit for which at least one channel program is transmitted. A set of equipment controllers is provided which interpret channel program commands and status information, and which further control data transfers to and from the storage facilities in accordance with the channel program command. A device is also provided for establishing a unit thread by choosing an equipment controller from the set of equipment controllers as a function of the type of equipment that the channel requests as a target.
|
