Method of managing a network system for a storage system

A storage system comprising:

• a controller which controls data input/output to a disk drive where data is stored;
• and
• a network interface which controls data transmission and reception to and from a network,
• wherein the storage system is connected via a switch on the network to a computer device which receives data from the storage system to process the data, and
• wherein a control VLAN, a user VLAN, and the priority of each of the VLANs are set on the switch, the control VLAN transferring mainly control data, the user VLAN transferring data other than the control data.

A method of managing a network system comprising a computer device which processes data, a storage system, and an L2 switch which connects the computer device and the storage system to each other, the storage system comprising:

• a disk drive for data storage;
• a control unit for data input/output to the disk drive;
• and a network interface for control of data transmission and reception to and from a network,
• wherein the storage system sets a control VLAN and a user VLAN on the L2 switch, VLANs including at least one of a control VLAN transferring mainly control data, and at least one of a user VLAN transferring user data,
• wherein, upon reception of control information from the control VLAN, a priority modify packet is sent to the L2 switch directly connected to the storage system to thereby set the priority of the user VLAN to the L2 switch,
• wherein the L2 switch notifies another L2 switch of the priority of user VLAN, and
• wherein the set user VLAN priority is set to the other L2 switch.