Power-fail protection method and device for solid state disk

Abstract

The invention discloses a power-fail protection method for a solid state disk. The method comprises the following steps of: acquiring effective self-discharge time of an emergency power supply of the solid state disk; and regulating the size of a buffer zone of the solid state disk according to the self-discharge time. Correspondingly, the invention also discloses a power-fail protection device for a solid state disk. Therefore, when the emergency power supply of the solid state disk is failed, the integrity of data can be ensured.

Description

technical field [0001] The invention relates to computer storage technology, in particular to a method and device for power-down protection of a solid-state hard disk. Background technique [0002] SSD (Solid State Disk or Solid State Drive, solid state drive), also known as electronic hard disk or solid state electronic disk, does not have the rotating medium of ordinary hard disk, so it has excellent shock resistance. The storage module of the solid-state hard disk is a single Flash chip, and the organizational form of the current Flash chip is generally divided into two levels: block (block) and page (page). The page size is 1KB, 2KB, 4KB, etc. In order to improve the performance of solid-state drives and reduce erasure loss, solid-state drives generally use write buffers to merge and delay write operations to NAND FLASH (flash memory) storage bodies. By rationally using the write buffer, the read-change-write and erase operations caused by write operations can be effec...

AI Technical Summary

Problems solved by technology

Although this technology solves the problem of the failure of the primary backup power supply, it also increases the hardware cost and complexity of the solid-state hard drive due to the introduction of the secondary backup power supply.

It also introduces the problem of data integrity being compromised by secondary backup power failures

[0005] In summary, the existing power-failure protection technology for solid-state drives obviously has inconvenience and defects in actual use, so it is necessary to improve them.

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