Abstract: A method of creating a multiple of virtual Serial Advanced Technology Attachment ports in a disk array controller, and the method builds a port multiplier in a Serial Advanced Technology Attachment disk array controller by a software method, and the port multiplier defines several slices capable of identifying the address of a computer host system. The port multiplier is connected to at least one disk set, and each disk is divided into several data blocks corresponding to data blocks of another disk of the same disk set to constitute a synchronously updated disk backup system. The software method provides a method of connecting several storage units to overcome the restriction on the point-to-point connection of the Serial Advanced Technology Attachment disk array system, so as to achieve a multi-driving function and a serial bus system.

Abstract: This invention discloses a method of creating a multiple of virtual SATA ports in a disk array controller, and the method builds a port multiplier in a SATA disk array controller by a software method, and the port multiplier defines several slices capable of identifying the address of a computer host system. The port multiplier is connected to at least one disk set, and each disk is divided into several data blocks corresponding to data blocks of another disk of the same disk set to constitute a synchronously updated disk backup system. The software method provides a method of connecting several storage units to overcome the restriction on the point-to-point connection of the SATA disk array system, so as to achieve a multi-driving function and a serial bus system. The invention also has the features of a low pin count and a high-frequency transmission.

Abstract: A correction method for reading data of a disk array system used for data security and backup of RAID 1 specifies one or more buffers for storing and reading data and an extra buffer. The buffers store data read by the disk array system from a computer system, and the extra buffer temporarily stores the same instruction issued by the disk array controller and the read data of the backup disk from the disk array system. The timeout parameter for the extra buffer to execute the same instructions of reading and returning data to the computer system can be set by users. If the disk array controller executes a read instruction of the computer system and a predetermined timeout parameter expires, the extra buffer will execute the instruction of reading and return the same data to the computer system, so as to reduce the wait time and enhance the reliability.