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Storage system and control method of non-volatile memory

A non-volatile, storage system technology, applied in the field of storage system and non-volatile memory control, can solve the problem of increased processing capacity

Active Publication Date: 2021-07-23
키오시아가부시키가이샤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the amount of processing that needs to be executed on the server side for storage operation and management tends to increase

Method used

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  • Storage system and control method of non-volatile memory
  • Storage system and control method of non-volatile memory
  • Storage system and control method of non-volatile memory

Examples

Experimental program
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Embodiment Construction

[0028] Embodiments will be described below with reference to the drawings.

[0029] First, refer to figure 1 , the configuration of an information processing system 1 including a storage system according to an embodiment will be described.

[0030] This memory system is a semiconductor memory device configured to write data into a nonvolatile memory and read data from the nonvolatile memory. The storage system is realized, for example, as a solid-state drive (SSD) 3 based on NAND flash technology.

[0031] The information processing system 1 includes a host (host device) 2 and an SSD 3 . The host computer 2 is an information processing device such as a server or a personal computer. A typical example of a server functioning as the host computer 2 is a server in a data center.

[0032] In the case where the host 2 is realized by a server in a data center, the host (server) 2 can be connected to a plurality of end user (end user, end user) terminals 90 via the network 50 . ...

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Abstract

Embodiments of the present invention realize a storage system and a nonvolatile memory control method capable of supporting storage management by a host. The storage system of the embodiment logically divides the nonvolatile memory into a plurality of storage areas including a first storage area and a second storage area. The storage system manages a first upper limit value and a second upper limit value based on a request from the host specifying the total amount of writeable data for each storage area. The upper limit of the total amount of data written, the second upper limit value represents the upper limit of the total amount of data that can be written to the second storage area, and the total amount of data written into the first storage area and the total amount of data written into the second storage area are measured. The total amount of data in the second storage area. The storage system restricts writing of data from the host to the first storage area when the measured total amount of data written to the first storage area reaches a first upper limit.

Description

technical field [0001] Embodiments of the present invention relate to a storage system and a control method of a nonvolatile memory. Background technique [0002] In recent years, storage systems including nonvolatile memories have been widely used. [0003] As one of such storage systems, a solid state drive (SSD) based on NAND flash technology is known. Due to its low power consumption and high performance, SSDs are used as memory for various computers. [0004] Recently, SSDs are also used as memories for storing large-capacity data in servers in data centers. The high-speed access performance provided by the SSD can improve the I / O performance of the server (host). [0005] In a data center, it is necessary to provide a flexible storage service suitable for each user's storage requirements. Therefore, the amount of processing that needs to be executed on the server side for storage operation and management tends to increase. [0006] Therefore, in a storage system s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
CPCG06F3/061G06F3/0611G06F3/0665G06F3/0679G06F3/0637G06F3/0644G06F12/0246G06F2212/7202G06F3/0688G06F2009/45583G06F3/0655G06F9/45558G06F2212/205G06F12/0638
Inventor 菅野伸一
Owner 키오시아가부시키가이샤