Abstract: The NAS 20 to which the removable hard disks 251 and 252 each storing an operating system are connected, assumes that the removable hard disk storing the signature of the NAS 20 stores an operating system executable on the NAS 20. Thus, the NAS 20 selects as a boot drive the removable hard disk storing the signature of the NAS 20 and then boots up the operating system stored in the boot drive thus selected.

Abstract: A failover information management device manages information on a failover system including two storage processing devices to each of which a storage medium is connectable. The failover information management device stores unsuitability information from which a combination of two storage processing devices determined to be unsuitable for constituting the failover system is identifiable.

Abstract: A terminal device including a plurality of logical ports as ports for providing logical connections, the logical ports logically connecting external devices to the terminal device, the terminal device comprising: a receiver configured to receive an execution instruction for an unmount process which is a process of transition from an activated state in which the logical connections are activated to a deactivated state in which the logical connections are deactivated; and a controller configured to control the logical ports, wherein the controller deactivates the logical connections corresponding to the logical ports, in response to the execution instruction for the unmount process.

Abstract: A storage system is capable of configuring a failover system by use of a first storage processing device to which first storage media are connected and a second storage processing device to which second storage media are connected. The storage system sets the RAID level of the second storage media to a RAID level with lower redundancy than the RAID level of the first storage media, if the storage capacity of the second storage media is smaller than the storage capacity of the first storage media.

Abstract: A network device that includes a server-side specific functional unit which has a function to manage a location of a data file in accordance with a specific file sharing function; a client-side specific functional unit which has a function to acquire the data file in accordance with the specific file sharing function; a server-side general functional unit which has a function to manage the location of the data file in accordance with a general file sharing function; and a client-side general functional unit which has a function to acquire the data file in accordance with the general file sharing function.

Abstract: A NAS as a main machine transmits a search packet for searching for a NAS as a new backup machine when a response from a NAS as a backup machine is not received. Each of NAS receiving the search packet transmits a device information packet to the NAS as the main machine. The device information packet includes a version number of failover function and storage capacity information. The NAS as the main machine selects a NAS as the new backup machine based on the version number and the storage capacity information included in the device information packet.

Abstract: A failover information management device manages information on a failover system including two storage processing devices to each of which a storage medium is connectable. The failover information management device stores unsuitability information from which a combination of two storage processing devices determined to be unsuitable for constituting the failover system is identifiable.

Abstract: A storage system is capable of configuring a failover system by use of a first storage processing device to which first storage media are connected and a second storage processing device to which second storage media are connected. The storage system sets the RAID level of the second storage media to a RAID level with lower redundancy than the RAID level of the first storage media, if the storage capacity of the second storage media is smaller than the storage capacity of the first storage media.

Abstract: A storage processing device to which a storage medium is connectable configures a failover system together with a different storage processing device. The storage processing device sets information obtained from predetermined random information as identification information of the storage medium, at the start to configure the failover system.

Abstract: A storage apparatus includes a storage unit including plural storage media, and a controller for controlling the storage unit. After a new storage medium has been added to the storage unit, the controller causes the new storage medium to store error correction codes for data stored in the respective storage media pre-existing in the storage unit. When new data is stored in the storage unit after the addition of the new storage medium, the controller causes the pre-existing storage media and the new storage medium to dispersedly store the new data and error correction codes for the new data.

Abstract: A storage processing device to which a plurality of removable hard disk drives and the like are connected and includes: a RAID controller for controlling RAID including the removable hard disk drives and the like, and an available storage capacity setting unit for setting an available storage capacity which is a storage capacity actually available for a predetermined storage unit that is one of the storage units connected to the storage processing in the disk array, on the basis of the real storage capacity of the predetermined storage unit, when the predetermined storage unit is connected to the storage processing device.

Abstract: The NAS 20 to which the removable hard disks 251 and 252 each storing an operating system are connected, assumes that the removable hard disk storing the signature of the NAS 20 stores an operating system executable on the NAS 20. Thus, the NAS 20 selects as a boot drive the removable hard disk storing the signature of the NAS 20 and then boots up the operating system stored in the boot drive thus selected.

Abstract: A terminal device including a plurality of logical ports as ports for providing logical connections, the logical ports logically connecting external devices to the terminal device, the terminal device comprising: a receiver configured to receive an execution instruction for an unmount process which is a process of transition from an activated state in which the logical connections are activated to a deactivated state in which the logical connections are deactivated; and a controller configured to control the logical ports, wherein the controller deactivates the logical connections corresponding to the logical ports, in response to the execution instruction for the unmount process.