Storage device connected to a superior device and method of supplying power to the storage device

A storage device being connectable to a superior device via an interface that sends and receives data being read and written to a storage media, the storage device comprising:

• a power supply unit that supplies power for starting the storage device;
• and
• a control device, mounted in the storage device, that includes
• a communication control unit that executes a sequence including a processing which exchanges information to confirm a presence or recognize a type of the interface from the superior device;
• a detecting unit that detects an execution condition of the sequence executed by the control device;
• a power supply instructing unit that instructs the power supply unit to supply power for starting the storage device, based on the execution condition of the sequence;
• a link-down detecting unit that detects link-down at all ports used by the interface for communication with the superior device;
• an end process unit that carries out an end process on the storage device, based on the detection by the link-down detecting unit;
• and
• a first detection suspending unit that communicates with a superior device to determine a type of the superior device, and suspends detection by the link-down detecting unit, based on a determination result.

A storage device being connectable to a superior device via an interface that sends and receives data being read and written to a storage media, the storage device comprising:

• a power supply unit that supplies power for starting the storage device;
• and
• a control device, mounted in the storage device, that includes
• a communication control unit that executes a sequence including a processing which exchanges information to confirm a presence or recognize a type of the interface from the superior device;
• a detecting unit that detects an execution condition of the sequence executed by the control device;
• a power supply instructing unit that instructs the power supply unit to supply power for starting the storage device, based on the execution condition of the sequence;
• a link-down detecting unit that detects link-down at all ports used by the interface for communication with the superior device;
• an end process unit that carries out an end process on the storage device, based on the detection by the link-down detecting unit;
• and
• a second detection suspending unit that when receiving a prescribed command from the superior device, suspends detection by the link-down detecting unit.

A storage device being connectable to a superior device via an interface that sends and receives data being read and written to a storage media, the storage device comprising:

• a power supply unit that supplies power for starting the storage device;
• and
• a controller mounted in the storage device, that
• executes an OOB sequence including a processing which exchanges information to confirm a presence or recognize a type of the interface between the storage device and the superior device via the interface,
• detects an execution condition of the OOB sequence executed by the controller,
• instructs the power supply unit to supply power for starting the storage device, based on the detected execution condition of the OOB sequence,
• detects link-down at ports used by the interface for communication with the superior device, and
• suspends, when receiving a prescribed command from the superior device, detection of link-down.

A method of starting a storage device being connectable to a superior device via an interface that sends and receives data being read and written to a storage media, the method comprising:

• executing, in a controller mounted in the storage device, an OOB sequence including processing which exchanges information to confirm a presence or recognize a type of the interface between the storage device and the superior device via the interface;
• detecting an execution condition of the OOB sequence executed by the controller;
• instructing a power source to supply power for starting the storage device, based on the detected execution condition of the OOB sequence;
• detecting link-down at ports used by the interface for communication with the superior device;
• and
• suspending, when receiving a prescribed command from the superior device, detection at the detecting link-down.

A control device comprising:

• a communication control unit that executes an OOB sequence including a processing which exchanges information to confirm a presence or recognize a type of an interface that sends and receives data between a first device and a second device connected to the first device via the interface, the control device being mounted in the first device;
• a detecting unit that detects an execution condition of the OOB sequence;
• a power supply instructing unit that instructs a power supply unit to supply power for starting the first device, based on the detected execution condition of the OOB sequence;
• a link-down detecting unit that detects link-down at ports used by the interface for communication with the superior device;
• and
• a second detection suspending unit that when receiving a prescribed command from the superior device, suspends detection by the link-down detecting unit.