Storage apparatus and computer-readable storage medium

A computer-readable storage medium which stores a program for causing a computer to carry out a write verify process to verify whether or not information is correctly written immediately after writing the information in a write target region of a recording medium, said program comprising:

• a procedure causing the computer to judge whether or not a plurality of defective regions on the recording medium where a verify process failed are arranged along a radial direction of the recording medium, if a number of retry processes of the verify process with respect to the write target region exceeds a first threshold value;
• and
• a procedure causing the computer to reduce a second threshold value of a number of write retry processes, if the plurality of defective regions are arranged along the radial direction of the recording medium.

A computer-readable storage medium which stores a program for causing a computer to carry out a write verify process to verify whether or not information is correctly written immediately after writing the information in a write target region of a recording medium, said program comprising:

• a procedure causing the computer to judge whether or not a defective region on the recording medium where a write retry process failed and a defective region on the recording medium where a servo error is generated are arranged along a radial direction of the recording medium, if a number of write retry processes of the verify process with respect to the write target region exceeds a threshold value;
• and
• a procedure causing the computer to reduce the threshold value, if the defective region where the write retry process failed and the defective region where the servo error is generated are arranged along the radial direction of the recording medium.