Method for improving access efficiency of small computer system interface storage device

A method for improving an access efficiency of a small computer system interface (SCSI) storage device, for processing a plurality of access requests for a physical storage device from a request end, comprising:

• initializing a virtual disk, for dispatching the access requests to the corresponding physical storage device;
• setting a task queue in each virtual disk, for receiving a plurality of disk access tasks sent from a server;
• accessing a corresponding physical storage device according to the disk access tasks;
• executing a storage address recording means, for recording the disk access task having a same storage address, and sending the rest disk access tasks in sequence to the physical storage device;
• saving the disk access tasks into a request queue of the physical storage device;
• executing a program sequence optimization means on the disk access tasks in the request queue, for re-adjusting an executing sequence of the disk access tasks;
• sending back the processed disk access tasks to the virtual disk;
• and
• sending back data of the corresponding access request to the request end.