SELECTIVE BACKGROUND DATA REFRESH FOR SSDs

Patent metadata

Field	Value
Publication number	US-2019042114-A1
Application number	US-201816021722-A
Country	US
Kind code	A1
Filing date	Jun 28, 2018
Priority date	Jun 28, 2018
Publication date	Feb 7, 2019
Grant date	—

Abstract

An embodiment of a semiconductor apparatus may include technology to selectively determine a set of data for background refresh based at least in part on host-provided information, and refresh the determined set of data on a persistent storage media as a background operation. Other embodiments are disclosed and claimed.

First claim

We claim:

1 . An electronic storage system, comprising:
persistent storage media; and a controller communicatively coupled to the persistent storage media, the controller including logic to:
selectively determine a set of data for background refresh based at least in part on host-provided information, and
refresh the determined set of data on the persistent storage media as a background operation.

2 . The system of claim 1 , wherein the host-provided information includes information related to data on the persistent storage media scrubbed by a host.

3 . The system of claim 2 , wherein the logic is further to:
identify the host-provided information based on information associated with a write operation initiated by the host.

4 . The system of claim 2 , wherein the logic is further to:
set one or more flags based on the host-provided information, wherein the one or more flags are respectively associated with one or more regions of the persistent storage media; and disable background data refresh for the one or more regions of the persistent storage media based on respective states of the corresponding one or more flags.

5 . The system of claim 4 , wherein each of the one or more flags corresponds to a bit of the persistent storage media and wherein each of the one or more regions corresponds to a reclaim unit of the persistent storage media.

6 . The system of claim 1 , wherein the persistent storage media includes a solid state drive.

7 . A semiconductor apparatus, comprising:
one or more substrates; and logic coupled to the one or more substrates, wherein the logic is at least partly implemented in one or more of configurable logic and fixed-functionality hardware logic, the logic coupled to the one or more substrates to:
selectively determine a set of data for background refresh based at least in part on host-provided information, and
refresh the determined set of data on a persistent storage media as a background operation.

8 . The apparatus of claim 7 , wherein the host-provided information includes information related to data on the persistent storage media scrubbed by a host.

9 . The apparatus of claim 8 , wherein the logic is further to:
identify the host-provided information based on information associated with a write operation initiated by the host.

10 . The apparatus of claim 8 , wherein the logic is further to:
set one or more flags based on the host-provided information, wherein the one or more flags are respectively associated with one or more regions of the persistent storage media; and disable background data refresh for the one or more regions of the persistent storage media based on respective states of the corresponding one or more flags.

11 . The apparatus of claim 10 , wherein each of the one or more flags corresponds to a bit of the persistent storage media and wherein each of the one or more regions corresponds to a reclaim unit of the persistent storage media.

12 . The apparatus of claim 7 , wherein the persistent storage media includes a solid state drive.

13 . The apparatus of claim 7 , wherein the logic coupled to the one or more substrates includes transistor channel regions that are positioned within the one or more substrates.

14 . A method of controlling storage, comprising:
selectively determining a set of data for background refresh based at least in part on host-provided information; and refreshing the determined set of data on a persistent storage media as a background operation.

15 . The method of claim 14 , wherein the host-provided information includes information related to data on the persistent storage media scrubbed by a host.

16 . The method of claim 15 , further comprising:
identifying the host-provided information based on information associated with a write operation initiated by the host.

17 . The method of claim 15 , further comprising:
setting one or more flags based on the host-provided information, wherein the one or more flags are respectively associated with one or more regions of the persistent storage media; and disabling background data refresh for the one or more regions of the persistent storage media based on respective states of the corresponding one or more flags.

18 . The method of claim 17 , wherein each of the one or more flags corresponds to a bit of the persistent storage media and wherein each of the one or more regions corresponds to a reclaim unit of the persistent storage media.

19 . The method of claim 14 , wherein the persistent storage media includes a solid state drive.

20 . At least one computer readable storage medium, comprising a set of instructions, which when executed by a computing device, cause the computing device to:
selectively determine a set of data for background refresh based at least in part on host-provided information; and refresh the determined set of data on a persistent storage media as a background operation.

21 . The at least one computer readable storage medium of claim 20 , wherein the host-provided information includes information related to data on the persistent storage media scrubbed by a host.

22 . The at least one computer readable storage medium of claim 21 , comprising a further set of instructions, which when executed by the computing device, cause the computing device to:
identify the host-provided information based on information associated with a write operation initiated by the host.

23 . The at least one computer readable storage medium of claim 21 , comprising a further set of instructions, which when executed by the computing device, cause the computing device to:
set one or more flags based on the host-provided information, wherein the one or more flags are respectively associated with one or more regions of the persistent storage media; and disable background data refresh for the one or more regions of the persistent storage media based on respective states of the corresponding one or more flags.

24 . The at least one computer readable storage medium of claim 23 , wherein each of the one or more flags corresponds to a bit of the persistent storage media and wherein each of the one or more regions corresponds to a reclaim unit of the persistent storage media.

25 . The at least one computer readable storage medium of claim 20 , wherein the persistent storage media includes a solid state drive.

Assignees

• Intel Corp

Inventors

• Mesnier Michael
• Karkra Kapil
• Wysocki Piotr
• Hughes Jonathan
• Watt Brennan
• Trika Sanjeev
• Ramalingam Anand

Classifications

• G06F3/065

  Replication mechanisms · CPC title

• G06F3/0652 Primary

  Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket · CPC title

• G06F3/0679

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

• G06F3/0659

  Command handling arrangements, e.g. command buffers, queues, command scheduling · CPC title

• G06F3/0619 Primary

  in relation to data integrity, e.g. data losses, bit errors · CPC title