. . . "xample, comprises logic such as TTL and CMOS. The disks106-1 to 106-N each comprises a secondary memory such as a hard disk.The computer coupling network adapter 130 is a device for coupling computers 100-1 to 100-N and the computer coupling mechanism 140 to each other and performing transmitting-receiving processing of data in responding to an indication from theprocessor 101 and disk requirement" .