Disk array apparatus, control method therefor, and storage medium

1. A disk array apparatus comprising:

a conversion rule storage unit that stores a conversion rule associated with a plurality of generations in a first configuration table of the disk array apparatus; and

a control unit that, from a disk device which stores a generation identifier indicating the generation and a second configuration table, retrieves the generation identifier, and converts the second configuration table on the basis of the conversion rule associated with the retrieved generation identifier,

wherein

the second configuration table includes an option for a type of the disk device, and

the control unit adds a new type of disk device and an associated flag which indicates that the type is not selected as the new option for the type of the disk device in the second configuration table.

2. The disk array apparatus according to claim 1 , wherein

the second configuration table includes a data storage capacity, and

the control unit changes a size of a storage area of the data storage capacity included in the second configuration table.

3. The disk array apparatus according to claim 1 , further comprising:

an additional storage device that stores the second configuration table of the disk device associated with the disk device

wherein,

the control unit when a size of the second configuration table becomes larger than an allowable size resulting from the conversion of the second configuration table of the disk device, stores the second configuration table resulting from the conversion into the additional storage device associated with the disk device.

4. The disk array apparatus according to claim 1 , further comprising:

an array input/output unit that accesses data of the disk device on the basis of the second configuration table.

5. The disk array apparatus according to claim 3 , further comprising:

an insertion/removal unit that connects the disk device and the additional storage device to be able to be inserted and removed; and

a disk input/output unit that inputs/outputs data to/from the disk device.

6. A control method for a disk array apparatus, comprising:

storing a conversion rule associated with a plurality of generations in a first configuration table of the disk array apparatus;

from a disk device which stores a generation identifier indicating the generation and a second configuration table, retrieving the generation identifier, and converting the second configuration table on the basis of the conversion rule associated with the retrieved generation identifier, the second configuration table including an option for a type of the disk device; and

adding a new type of disk device and an associated flag which indicates that the type is not selected as the new option for the type of the disk device in the second configuration table.

7. A computer readable non-transitory storage medium embodying a program, said program causing a disk array apparatus to perform a method, said method comprising:

storing a conversion rule associated with a plurality of generations in a first configuration table of the disk array apparatus;

from a disk device which stores a generation identifier indicating the generation and a second configuration table, retrieving the generation identifier, and converting the second configuration table on the basis of the conversion rule associated with the retrieved generation identifier, the second configuration table including an option for GP a type of the disk device; and

adding a new type of disk device and an associated flag which indicates that the type is not selected as the new option for the type of the disk device in the second configuration table.