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Storage module and method for adaptive burst mode

A technology of storage module and burst mode, which is applied in information storage, static memory, memory system, etc., and can solve the problems of reducing capacity and no available space in memory, etc.

Active Publication Date: 2017-05-10
SANDISK TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, avoiding garbage collection also reduces capacity while maximizing instantaneous performance, because in some cases the memory may exhaust all existing free blocks and there may be no additional free space to store additional information

Method used

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  • Storage module and method for adaptive burst mode
  • Storage module and method for adaptive burst mode
  • Storage module and method for adaptive burst mode

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Embodiment Construction

[0014] As mentioned in the background section above, some storage modules can operate in a "regular" mode or in a "burst" mode in which above-average performance of the storage module is required to meet requests from the host Higher than average number of write commands for the controller. For example, in some storage modules, burst mode may be able to support a storage rate of 160MB / s for 4GB (ie, 10 seconds), while regular mode may support up to 80MB / s for 12GB. Applications running on the host controller requiring performance greater than 80MB / s may cause the storage module to operate in burst mode even though it may not require the full rate of 160MB / s. Using burst mode may result in inefficient use of resources and may limit the volume of data processed by the application. For example, an application could be a low-resolution but long-running video application. Using burst mode would unnecessarily limit the length of video segments that can be captured by the applicati...

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Abstract

A storage module and method for adaptive burst mode are provided. In one embodiment, a storage module is provided comprising a memory and a controller. The controller is configured to receive a plurality of write commands from a host controller in communication with the storage module, store the plurality of write commands in a command queue in the storage module, and choose one of a plurality of burst modes in which to operate the memory based on how many write commands are stored in the command queue.

Description

Background technique [0001] The storage module can be used in different conditions, which place different performance requirements on the memory of the storage module. To cope with these different conditions, the memory in some storage devices can operate in a "regular" mode or in a "burst" mode, in which above-average performance of the storage module is required to meet the requirements from the host Higher than average number of write commands for the controller. For example, when the storage module is part of a video camera device, the raw video captured by the camera is stored in the camera's RAM, and then it is compressed and transferred to the memory in the storage module. In such systems, memory is often required to match the average rate of compressed video, and as such, burst mode may be required to provide write performance matching the rate at which video data is generated. For example, in some storage modules, burst mode may be able to support a storage rate of ...

Claims

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Application Information

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IPC IPC(8): G06F13/28
CPCG06F13/28G06F12/0246G06F12/0866G06F2212/1016G06F2212/1044G06F2212/601G06F2212/7203G06F2212/7205G06F2212/7206G11C7/10G11C11/5628G06F3/0613G06F3/0659G06F3/0688G06F12/0253
Inventor A.沙哈拉巴尼T.赫勒H.奥辛斯基E.利瓦伊E.P.齐伯尔斯坦J.G.哈恩
Owner SANDISK TECH LLC