Dual-interface storage system and method for use therewith
A dual-interface storage system and method for use therewith are provided. In one embodiment, the storage system comprises a memory; a connector compatible with both a first host interface and a second host interface; a first data path to at least a part of the memory comprising the first host interface and a controller for the first host interface; a second data path to at least another part of the memory comprising the second host interface and a controller for the second host interface; and a switch configured to connect the connector to either the first data path or the second data path in response to a command from a host. Other embodiments are disclosed.
1. A storage system comprising:
a memory;
a first host interface associated with a first protocol;
a first controller for the first host interface;
a second host interface associated with a second protocol;
a second controller for the second host interface;
a connector configured to connect with a host and compatible with both the first host interface and the second host interface; and
a switch configured to connect the connector to either a first data path or a second data path in response to a command from the host to direct the storage system to use the first data path or the second data path, wherein in response to the switch being connected to the first data path, the switch is disconnected from the second data path, and vice versa;
wherein:
the first data path connects the first host interface and the first controller for the first host interface to at least part of the memory; and
the second data path connects the second host interface and the second controller for the second host interface to at least another part of the memory.
2. The storage system of claim 1 , wherein:
the first host interface comprises a serial advanced technology attachment (SATA) interface; and
the second host interface comprises a peripheral component interconnect express (PCIe) interface.
3. The storage system of claim 1 , wherein the connector comprises a M.2 connector.
4. The storage system of claim 1 , wherein the switch is further configured to switch between the first data path and the second data path a plurality of times.
5. The storage system of claim 1 , wherein the switch is further configured to connect the connector to one of the first and second data paths by default upon power up.
6. The storage system of claim 1 , wherein:
the storage system is configured to detect a host capable of supporting only the first host interface or only the second host interface; and
the switch is further configured to connect the connector to the first data path or the second data path in response to that detection.
7. The storage system of claim 1 , wherein:
the host comprises an application layer, a driver layer, and a physical layer;
the storage system comprises a physical layer, a command layer, and a controller back-end layer.
8. The storage system of claim 1 , wherein the memory comprises a three-dimensional memory.
9. A method comprising:
performing the following in a host in communication with a storage system comprising a memory, a first host interface associated with a first protocol, a second host interface associated with a second protocol, a first memory interface, a second memory interface, a connector configured to connect with the host and compatible with both the first host interface and the second host interface, and a switch:
determining whether to use the first host interface or the second host interface;
in response to determining to use the first host interface, sending a command to the storage system to cause the switch to connect the host with the first host interface, wherein a first data path connects the first host interface and a first controller for the first memory interface to at least part of the memory; and
in response to determining to use the second host interface, sending a command to the storage system to cause the switch to connect the host with the second host interface, wherein a second data path connects the second host interface and a second controller for the second memory interface to at least another part of the memory;
wherein in response to the switch being connected to the first data path, the switch is disconnected from the second data path, and vice versa.
10. The method of claim 9 , wherein:
the first host interface comprises a serial advanced technology attachment (SATA) interface; and
the second host interface comprises a peripheral component interconnect express (PCIe) interface.
11. The method of claim 9 , wherein the host comprises a connector compatible with both the first host interface and the second host interface.
12. The method of claim 11 , wherein the connector comprises a M.2 connector.
13. The method of claim 9 , wherein the host determines whether to use the first host interface or the second host interface based on power usage.
14. The method of claim 9 , wherein the host determines whether to use the first host interface or the second host interface based on which host application is accessing the storage system.
15. The method of claim 9 , further comprising sending commands to switch between the first and second host interfaces a plurality of times.
16. The method of claim 9 , wherein:
the host comprises an application layer, a driver layer, and a physical layer; and
the storage system comprises a physical layer, a command layer, and a controller back-end layer.
17. A storage system comprising:
a memory;
a first host interface associated with a first protocol;
a first controller for the first host interface;
a second host interface associated with a second protocol;
a second controller for the second host interface;
a connector configured to connect with a host and compatible with both the first host interface and the second host interface; and
means for switching between a first data path and a second data path in response to a command from the host to direct the storage system to use the first data path or the second data path, wherein when the first data path is used, the second data path is not used, and vice versa;
wherein:
the first data path connects the first host interface and the first controller for the first host interface to at least part of the memory; and
the second data path connects the second host interface and the second controller for the second host interface to at least another part of the memory.
18. The method of claim 9 , wherein the storage system further comprises a first controller for the first host interface and a second controller for the second host interface.
19. The method of claim 18 , wherein causing the switch to connect the host with the first host interface causes a connection between the first host interface and the first controller for the first host interface and at least part of the memory.
20. The method of claim 19 , wherein causing the switch to connect the host with the second host interface causes a connection between the second host interface and the second controller for the second host interface and at least another part of the memory.