公开(公告)号：US10324832B2

公开(公告)日：2019-06-18

申请号：US15230347

申请日：2016-08-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jingpei Yang ,  Changho Choi ,  Rajinikanth Pandurangan

IPC: G06F3/06 ,  G06F12/02

Abstract: Embodiments include a multi-stream storage device, a system including a multi-stream storage device, and a method, comprising: receiving an access to a logical address associated with a multi-stream storage device; converting the logical address into a stream identifier; and accessing the multi-stream storage device using the logical address and the stream identifier.

公开(公告)号：US20190065360A1

公开(公告)日：2019-02-28

申请号：US15832681

申请日：2017-12-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Nima Elyasi ,  Changho Choi

IPC: G06F12/02 ,  G11C16/10 ,  G11C16/26 ,  G06F11/10 ,  G06F3/06

Abstract: A RAID-enabled solid state drive (SSD) including: a controller connected to a plurality of channels; a plurality of flash chip groups, each including a plurality of flash chips coupled to the plurality of channels, the plurality of flash chips including: a plurality of non-parity flash chips; and i parity flash chips, wherein the controller is configured to write data to the plurality of flash chip groups such that within each of the plurality of flash chip groups only i or less flash chips of the plurality of flash chips are allowed to be written to at the same time, where i is an integer equal to 1 or more.

公开(公告)号：US20180335947A1

公开(公告)日：2018-11-22

申请号：US15678986

申请日：2017-08-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jason Martineau ,  Stephen Garry Fischer ,  Changho Choi

IPC: G06F3/06

CPC classification number: G06F3/064 ,  G06F3/0604 ,  G06F3/0611 ,  G06F3/0616 ,  G06F3/0679 ,  G06F3/0688 ,  G06F12/0246

Abstract: A method includes: receiving logical streams from a plurality of namespaces; determining characteristics of logical streams associated with the plurality of namespaces; selecting a configurable assignment mode; and assigning the logical streams associated with the plurality of namespaces to a plurality of hardware streams to access physical storage blocks associated with a data storage device based on the characteristics of the logical streams and the configurable assignment mode. A number of hardware streams to access the physical storage blocks associated with the data storage drive is fixed, and a number of logical streams associated with the plurality of namespaces is varied depending on I/O processes running on a host computer.

公开(公告)号：US10108345B2

公开(公告)日：2018-10-23

申请号：US15400750

申请日：2017-01-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Changho Choi ,  Truong Nguyen ,  Wentao Wu

IPC: G06F3/06

Abstract: A method includes: collecting a stream attribute associated with each of a plurality of streams to a non-volatile memory; storing the stream attribute in a repository; and selecting a victim stream among the plurality of streams based on the stream attribute. The stream attribute can be one or more of a time stamp, an updated frequency, and an amount of data written to each of the plurality of streams.

公开(公告)号：US20170242625A1

公开(公告)日：2017-08-24

申请号：US15137978

申请日：2016-04-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Rajinikanth Pandurangan ,  Changho Choi

IPC: G06F3/06 ,  G11C16/10

CPC classification number: G06F3/0659 ,  G06F3/0604 ,  G06F3/061 ,  G06F3/0616 ,  G06F3/0649 ,  G06F3/0679 ,  G06F3/068

Abstract: A solid state drive including non-flash memory for storage of short-lifetime data and/or frequently updated data. The solid state drive is configured, when it receives a write command, to identify short lifetime data, and store it in non-flash memory, e.g., DRAM, instead of flash memory and store longer lifetime data to flash memory. When the non-flash memory is volatile memory (e.g., DRAM) the solid state drive may also include an energy storage device, such as a supercapacitor, to provide temporary power to move data from the volatile memory to flash memory if supply power is interrupted.