System and Method of Operation for High Capacity Solid-State Drive
A method of managing a solid-state drive. The method comprises coupling a flash memory device, serially connected with other flash memory devices to form a channel to further form a high-capacity flash memory structure, to a physical bank of a solid-state drive controller; mapping a logical address from a flash translation layer to a physical bank of the solid-state drive controller; and mapping the address in the physical bank of the solid-state drive controller to a plurality of physical addresses in the flash memory device.
1 . A method of managing a solid-state drive, comprising:
coupling a flash memory device, serially connected with other flash memory devices to form a channel to further form a high-capacity flash memory structure, to a physical bank of a solid-state drive controller;
mapping a logical address from a flash translation layer to a physical bank of the solid-state drive controller; and
mapping a single logical address in the physical bank of the solid-state drive controller to more than one physical address in the flash memory device.
2 . The method of claim 1 , wherein the flash memory device is a NAND flash device.
3 . The method of claim 1 , wherein the solid-state drive controller supports up to eight channels.
4 . The method of claim 1 , wherein each flash memory device has a unique device identification number within the channel.
5 . The method of claim 1 , wherein the channel has a capacity of up to 255 serially connected flash memory devices.
6 . The method of claim 1 , wherein the coupling of a physical bank of the solid-state drive controller and a specific physical bank of the flash memory devices is fixed after configuration.
7 . The method of claim 1 , wherein the signal propagation is unidirectional along the serially connected flash memory devices.
8 . A solid-state drive, comprising:
at least one flash memory device, serially connected in a ring topology to form a unidirectional channel, each flash memory device with a unique identification parameter within the channel; and
a solid-state drive controller to manage mapping between a logical address from a flash translation layer (FTL) and a physical address of the at least one flash memory device, the controller comprising:
a processor, and
physical banks coupled to the flash memory devices, with each physical bank having access to a plurality of specific and fixed banks of the flash memory device.
9 . The solid-state drive of claim 8 , wherein a first flash memory device in the serially connected ring topology has a first device identification number that allows a first portion of serial data to be addressed to the first flash memory device, and wherein a second flash memory device in the serially connected ring topology has a second device identification number that allows a second portion of the serial data to be addressed to the second flash memory device.
10 . The solid-state drive of claim 8 , wherein the flash memory device is a NAND flash device.
11 . The solid-state drive of claim 8 , wherein a physical address within a channel in the flash memory devices comprises a bank address, a logical unit (LUN) address, a block address, and a page address.
12 . The solid-state drive of claim 8 , wherein a device address, a bank address, and a logical unit address of an address of the flash memory device are coupled to a physical bank of the solid-state drive controller.
13 . A method of managing a solid-state drive, comprising:
mapping a logical address from a flash translation layer to a physical bank of a solid-state drive controller; and
mapping the address in the physical bank of the solid-state drive controller to a plurality of physical addresses in a flash memory device.
14 . The method of claim 13 , wherein a plurality of flash memory devices are serially connected in a unidirectional ring topology.
15 . The method of claim 14 , wherein a first flash memory device is configured to receive an input of serial data and to provide an output of serial data, and wherein a second flash memory device is configured to receive the output of serial data from the first flash memory device.
16 . The method of claim 15 , wherein the first flash memory device has a first device identification number that allows a first portion of the serial data to be addressed to the first flash memory device, and wherein the second flash memory device has a second device identification number that allows a second portion of the serial data to be addressed to the second flash memory device.
17 . The method of claim 13 , wherein a logical bank from the flash translation layer is mapped to a physical bank of the solid-state drive controller on a one-to-one basis.
18 . The method of claim 13 , wherein a physical bank of the solid-state drive controller is mapped to at least one bank of a flash memory device on a one-to-many basis.