Magnetic disk apparatus, method for adjusting performance of magnetic disk apparatus, and method for accessing magnetic disk

A method for accessing a magnetic disk, the method being executed by magnetic disk apparatuses that can change the number of sectors included in each cell set on a magnetic disk to access the magnetic disks, the method comprising:

• inputting a sector number designated by an access request;
• and
• specifying, on the basis of information stored in first storing unit for stores information on the number of sectors, which should be included in each cell, defined as performance adjusting information and information stored in second storing unit for stores information on the number of unused sectors included in each cell determined according to the number of sectors defined by the performance adjusting information, in which recording position a sector indicated by the inputted sector number is located.

A program for accessing a magnetic disk, the program being used by magnetic disk apparatuses that can change the number of sectors included in each cell set on a magnetic disk to execute processing for accessing the magnetic disks, the program causing a computer to execute:

• inputting a sector number designated by an access request;
• and
• specifying, on the basis of information stored in first storing unit that stores information on the number of sectors, which should be included in each cell, defined as performance adjusting information and information stored in second storing unit that stores information on the number of unused sectors included in each cell determined according to the number of sectors defined by the performance adjusting information, in which recording position a sector indicated by the inputted sector number is located.

A computer readable medium recording a magnetic disk access program used by magnetic disk apparatuses, which can change the number of sectors included in each cell set on a magnetic disk, to execute processing for accessing the magnetic disk apparatuses, the program causing a computer to execute:

• inputting a sector number designated by an access request;
• and
• specifying, on the basis of information stored in first storing unit that stores information on the number of sectors, which should be included in each cell, defined as performance adjusting information and information stored in second storing unit that stores information on the number of unused sectors included in each cell determined according to the number of sectors defined by the performance adjusting information, in which recording position a sector indicated by the inputted sector number is located.

A method for accessing a magnetic disk, the method being executed by magnetic disk apparatuses, which can change the number of sectors included in each cell set on a magnetic disk, to access the magnetic disks, the method comprising:

• inputting a sector number designated by an access request;
• and
• specifying, on the basis of information on the number of used sectors included in each cell determined on the basis of performance adjusting information defining the number of sectors, which should be included in each cell, and information stored in storing unit that stores information on the number of unused sectors included in each cell determined according to the number of used sectors, in which recording position a sector indicated by the inputted sector number is located.

A program for accessing a magnetic disk, the program being used by magnetic disk apparatuses, which can change the number of sectors included in each cell set on a magnetic disk, to execute processing for accessing the magnetic disks, the program causing a computer to execute:

• inputting a sector number designated by an access request;
• and
• specifying, on the basis of information on the number of used sectors included in each cell determined on the basis of performance adjusting information defining the number of sectors, which should be included in each cell, and information stored in storing unit that stores information on the number of unused sectors included in each cell determined according to the number of used sectors, in which recording position a sector indicated by the inputted sector number is located.

A computer readable medium recording a magnetic disk access program used by magnetic disk apparatuses, which can change the number of sectors included in each cell set on a magnetic disk, to execute processing for accessing the magnetic disk apparatuses, the program causing a computer to execute:

• inputting a sector number designated by an access request;
• and
• specifying, on the basis of information on the number of used sectors included in each cell determined on the basis of performance adjusting information defining the number of sectors, which should be included in each cell, and information stored in storing unit that stores information on the number of unused sectors included in each cell determined according to the number of used sectors, in which recording position a sector indicated by the inputted sector number is located.