Storage control device, storage system, and storage control method

A storage system comprising a storage control device and two or more storage devices,

• wherein the storage control device includes:
• an area control unit configured to determine one or more valid areas for each type of areas included in respective storage areas stored in the two or more storage devices to generate a virtual storage having, as a storage area, a set of the one or more valid areas;
• an attribute control unit configured to select, as speed information of the virtual storage, a lowest value of minimum guaranteed speeds in reading and writing which are included among respective pieces of attribute information stored in the two or more storage devices, with reference to the respective pieces of the attribute information;
• and
• an access control unit configured to transmit information regarding the storage area of the virtual storage and the speed information to a host device that reads and writes data from/to the virtual storage.

A storage control method of controlling two or more storage devices, the storage control method comprising:

• determining one or more valid areas for each type of areas included in respective storage areas stored in the two or more storage devices to generate a virtual storage having, as a storage area, a set of the one or more valid areas;
• selecting, as speed information of the virtual storage, a lowest value of minimum guaranteed speeds in reading and writing which are included among respective pieces of attribute information stored in the two or more storage devices, with reference to the respective pieces of the attribute information;
• and
• transmitting information regarding the storage area of the virtual storage and the speed information to a host device that reads and writes data from/to the virtual storage.