Storage system creating cache and logical volume areas in flash memory

A storage system comprising:

• a storage controller,
• a plurality of flash memory devices coupled to the storage controller, each of the flash memory devices including a flash memory controller and a plurality of flash memory chips, being configured to be a logical volume for storing data by the storage controller;
• and
• the storage controller configured to receive:
• a first command for setting a first portion of the plurality of flash memory devices as a cache memory area for temporarily storing data, and
• a second command for setting a second portion of the plurality of flash memory devices as the logical volume for storing data, the second portion being different from the first portion.

A storage system comprising:

• a storage controller providing a virtual volume;
• a plurality of flash memory devices, each of the plurality of flash memory devices including a memory controller and a plurality of flash memory chips, and being configured to be a data storage area for storing data;
• and
• the storage controller configured to:
• create a cache memory area using a first storage area of the plurality of flash memory devices in which data is temporarily stored,
• create a storage pool area using a second storage area of the plurality of flash memory devices, the second storage area being different from the first storage area, and
• write data into a storage region, which is allocated to the virtual volume, in the second storage area of the storage pool area.

A storage system comprising

• a storage controller providing a virtual volume;
• a plurality of flash memory devices, each of the plurality of flash memory devices including a memory controller and a plurality of flash memory chips, and being configured to be a data storage area for storing data;
• and
• the storage controller configured to:
• receive a first command for setting a cache memory area using a first storage area of the plurality of flash memory devices for temporarily storing data,
• receive a second command for setting a storage pool area using a second storage area of the plurality of flash memory devices, the second storage area being different from the first storage area, and
• allocate a storage region of the second storage area in the storage pool area to the virtual volume based on a write request to the virtual volume.