Storage system

Patent metadata

Field	Value
Publication number	US-2016259556-A1
Application number	US-201514698297-A
Country	US
Kind code	A1
Filing date	Apr 28, 2015
Priority date	Mar 4, 2015
Publication date	Sep 8, 2016
Grant date	—

Abstract

According to one embodiment, a storage system includes a storage unit including a memory unit, the memory unit including a nonvolatile memory and a controller which controls the nonvolatile memory, a connection unit which connects the storage unit to outside and controls the storage unit, and a management unit which at least monitors power supply voltages of the storage unit and the connection unit.

First claim

What is claimed is:

1 . A storage system comprising:
a storage unit including a memory unit and a first issuance unit which issues first information, the memory unit including a nonvolatile memory and a controller which controls the nonvolatile memory; a connection unit which connects the storage unit to outside and controls the storage unit; a first power supply unit which supplies a first power supply voltage to at least one of the storage unit and the connection unit, the first power supply voltage being generated by converting an external power supply voltage supplied from an external power supply; and a management unit which monitors power supply information based on the first power supply voltage, wherein the connection unit issues a write request to the storage unit, and the first issuance unit issues, to the connection unit, the first information associated with write data of the write request.

2 . The storage system of claim 1 , wherein
the connection unit stores the first information, and the nonvolatile memory stores the first information and the write data.

3 . The storage system of claim 2 , wherein
the connection unit specifies the first information relative to the storage unit, and the storage unit reads out the write data associated with the first information from the nonvolatile memory based on the first information specified by the connection unit.

4 . The storage system of claim 3 , wherein
the storage unit transmits, to the connection unit, the write data which is associated with the first information and is read out from the nonvolatile memory.

5 . The storage system of claim 1 , wherein
the storage unit further includes a second issuance unit which issues second information associated with backup data stored in the nonvolatile memory.

6 . The storage system of claim 5 , wherein
the connection unit issues a write request of the backup data to the storage unit, and the second issuance unit issues, to the connection unit, the second information associated with the backup data related to the write request.

7 . The storage system of claim 6 , wherein
the connection unit stores the second information, and the nonvolatile memory stores the second information and the backup data.

8 . The storage system of claim 7 , wherein
the connection unit specifies the second information relative to the storage unit, and the storage unit reads out, based on the second information specified by the connection unit, the backup data associated with the second data from the nonvolatile memory.

9 . The storage system of claim 8 , wherein
the storage unit transmits, to the connection unit, the backup data which is associated with the second information and is read out from the nonvolatile memory.

10 . The storage system of claim 1 , further comprising a second power supply unit which generates a second power supply voltage based on the first power supply voltage supplied from the first power supply unit, wherein
the second power supply unit supplies the second power supply voltage to at least the storage unit when the storage system is electrically shut off from the external power supply.

11 . A storage system comprising:
a storage unit including a memory unit and a first issuance unit which issues first information, the memory unit including a nonvolatile memory and a controller which controls the nonvolatile memory; and a connection unit which connects the storage unit to outside and controls the storage unit, wherein the connection unit issues a write request to the storage unit, and the first issuance unit issues, to the connection unit, the first information associated with write data of the write request.

Assignees

• Toshiba Kk

Inventors

• Manabe Shinichiro

Classifications

• G11C16/30

  Power supply circuits · CPC title

• G06F3/0604 Primary

  Improving or facilitating administration, e.g. storage management · CPC title

• G06F3/0679

  Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP] · CPC title

• G06F3/065

  Replication mechanisms · CPC title

• G06F3/0613 Primary

  in relation to throughput · CPC title