| 摘要 |
A method of protecting data, stored in a memory device of a computer system connected to a SCSI interface, against, unauthorized access whereby access by the computer system to the memory device is either permitted or refused, depending upon the authorization of a request, by an exchange of information between the computer system and the memory device at the SCSI interface. Authorization is by means of identification of an authorized user. During access by the computer system to the memory device, any kind of operation with the memory device can be blocked, or access permission given for memory readout only, or for readout and recording, or only for recording. The equipment for carrying out the method includes a memory device connected by a SCSI bus to a host computer system, while between the memory device and the host computer system there an additional control unit with authorization block is inserted. |
