Electronic equipment including storage device
First Claim
1. A storage device communicable with a host device with a Serial Attached SCSI (SAS) interface, comprising:
- a nonvolatile memory; and
a controller circuit including a SAS wide port, a first transport layer, and a second transport layer, the SAS wide port including a first phy and a second phy, the controller circuit configured to;
transmit a connection request from the first phy to a first host device even when a connection is established between the second phy and the first host device, the first host device being a host device to which the controller circuit is going to transmit a first frame venerated in the first transport layer; and
in a case that the connection request from the first phy is rejected, flow the first frame from the first transport layer to the second phv and transmit the first frame to the first host device using the connection established between the second phy and the first host device without retransmitting the connection request from the first phy.
3 Assignments
0 Petitions
Accused Products
Abstract
According to one embodiment, a storage device includes a nonvolatile memory, controller and interface. The nonvolatile memory stores data. The controller controls the operation of the nonvolatile memory. The interface includes first and second input/output units that transmit and receive a signal with respect to a host device. The first and second input/output units are set on the first hierarchy having the same communication function. The interface issues a connection request to the first input/output unit and when the connection request to the first input/output unit is rejected, the interface issues the connection request to the second input/output unit.
26 Citations
18 Claims
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1. A storage device communicable with a host device with a Serial Attached SCSI (SAS) interface, comprising:
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a nonvolatile memory; and a controller circuit including a SAS wide port, a first transport layer, and a second transport layer, the SAS wide port including a first phy and a second phy, the controller circuit configured to; transmit a connection request from the first phy to a first host device even when a connection is established between the second phy and the first host device, the first host device being a host device to which the controller circuit is going to transmit a first frame venerated in the first transport layer; and in a case that the connection request from the first phy is rejected, flow the first frame from the first transport layer to the second phv and transmit the first frame to the first host device using the connection established between the second phy and the first host device without retransmitting the connection request from the first phy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of controlling a storage device, the storage device being communicable with a host device with a Serial Attached SCSI (SAS) interface, the storage device including a nonvolatile memory and a controller circuit including a SAS wide port, a first transport layer, and a second transport layer, the SAS wide port including a first phy and a second phy, the method comprising:
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transmitting a connection request from the first phy to a first host device even when a connection is established between the second phy and the first host device, the first host device being a host device to which the controller circuit is going to transmit a first frame generated in the first transport layer; and in a case that the connection request from the first phy is rejected, flowing the first frame from the first transport layer to the second phy and transmitting the first frame to the first host device using the connection established between the second phy and the first host device without retransmitting the connection request from the first phy. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification