Method for realizing raid in multi-tenant solid-state disk, controller and multi-tenant solid-state disk

A RAID stripe and solid-state disk technology, applied in the storage field, can solve problems such as inapplicability of multi-tenant solid-state disks, and achieve the effects of reducing inspection and updating overhead, ensuring storage reliability, and reducing write volume

Active Publication Date: 2021-06-11
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

Therefore, existing RAID methods are not suitable for multi-tenant SSDs based on hardware isolation

Method used

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  • Method for realizing raid in multi-tenant solid-state disk, controller and multi-tenant solid-state disk
  • Method for realizing raid in multi-tenant solid-state disk, controller and multi-tenant solid-state disk

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Embodiment Construction

[0061] In order to make the objectives, technical solutions and advantages of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely intended to illustrate the invention and are not intended to limit the invention. Further, the technical features according to each of the various embodiments described below can be combined with each other as long as they do not constitute a collision between each other.

[0062] The present invention and the terms "first", "second", or the like (if present) are used to distinguish a similar object without having to describe a particular order or ahead order.

[0063] Prior to the technical solutions of the present invention in detail, the traditional multi-toll-tube solid-state disk system is briefly introduced. Such as figure 1 As shown, the traditional multi-tenant solid state ...

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Abstract

The invention discloses a method for realizing RAID in a multi-tenant solid-state disk, a controller and a multi-tenant solid-state disk, belonging to the field of storage technology, including: flash memory pages with the same offset in each flash memory wafer form a RAID strip, and each strip The parity information of the belt is stored in the NVM wafer; if the tenant requests to write a new data page, it will be written into a free flash memory page; if the tenant requests to update some data pages, the old data page will be read to merge to get a new data page , and mark the old data page as invalid, and update the corresponding check page to remove it from protection; if the tenant requests to update the complete data page, write it to the free flash page and mark the old data page as invalid ;When writing data to an idle flash memory page each time, update the corresponding check page to add it to protection; whenever I / O is idle, read the protected invalid data page and update the corresponding check page to Remove it from protection. The invention can ensure the storage reliability of the multi-tenant solid-state disk and improve the service quality of the tenants.

Description

Technical field [0001] The present invention belongs to the field of storage technology, and more particularly to a method of implementing RAID in a multi-tenant Solid Mask, a controller and a multi-tenant SSD. Background technique [0002] Solid State Disk, SSD based on NAND-type flash, has the advantages of high performance, low power and small size, and its storage capacity is constantly increasing, and the cost is also declining, so it has been widely used in the data center. In order to provide large-capacity and high throughput, the solid-state disk is highly parallel storage structure, that is, a plurality of flash wafers (wafer are independently performing the smallest storage unit of flash operation command), such as 128 64GB wafer constitutes an 8TB Solid state disk. [0003] On the one hand, in order to improve the storage space utilization and cost-effective, the scene of the large-capacity solid-state disk is increasing by multi-tenant sharing. Tenants' scope include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/02G06F12/16G06F3/06
CPCG06F3/0619G06F3/0644G06F3/0647G06F3/0652G06F3/0688G06F12/0246G06F12/0253G06F12/16
Inventor 周游黄维周王顺卓吴非谢长生
Owner HUAZHONG UNIV OF SCI & TECH
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