Storage system and node management method

A storage system

• that configures a storage cluster using a plurality of nodes, the nodes comprising:
• a storage device that stores data;
• a memory;
• and
• a processor that runs a program configured to perform I/O processing on the storage device,
• wherein attributes of the nodes are specified as first attribute nodes and second attribute nodes, and
• the I/O processing in the nodes is executed as a plurality of processes including front-end I/O processing executed by any of the first attribute nodes and back-end I/O processing executed by the first and second attribute nodes having the storage device that stores data relating to the I/O processing,
• wherein
• it is possible to specify a first type of attribute relating to I/O processing and a second type of attribute relating to an accessory function of managing a volume, which is created in a storage pool, as the attribute of each of the nodes, and
• the processor of each of the nodes switches the program to be started on the own node in accordance with the first type of attribute and the second type of attribute specified for the own node.

A node management method performed by a storage system that configures a storage cluster using a plurality of nodes,

• wherein the nodes include:
• a storage device that stores data;
• a memory;
• and a processor that runs a program configured to perform I/O processing on the storage device,
• attributes of the nodes are specified as first attribute nodes and second attribute nodes,
• the I/O processing in the nodes is executed as a plurality of processes including front-end I/O processing executed by any of the first attribute nodes and back-end I/O processing executed by the first and second attribute nodes having the storage device that stores data relating to the I/O processing, and wherein
• the attribute of the node is specified by a user when adding the node to the storage cluster.