Delkin Blog

Understanding SSD Architecture

 

Solid state drives, or SSDs, were considered a revolutionary advance in data storage when they were introduced to the market, and they continue to be the preferred drive for the vast majority of consumer and industrial-grade Flash storage products. Because SSDs don’t contain moving parts, they are better equipped than hard disk drives, or HDDs, at operating in rugged conditions, and they also function faster and without the noise associated with HDDs. One of the key components in SSD architecture is the controller. The controller is responsible for creating a connection between the memory in the SSD and the host computer, and without it, the SSD would essentially be useless. Here is a closer look at SSD architecture and the importance of the controller in allowing the SSD to function seamlessly with the host system.

 

Basic SSD Features

The core features of an SSD are NAND components, each which may have several NAND die, and a controller, which links the NAND components with the host interface. The number of NAND components that are used depends on the design of the SSD, but ultimately, the number of NAND components and the die that they hold will determine the capacity of the drive. The more NAND die that are integrated into the SSD and that can be accessed by the controller, the larger the drive capacity will be.

 

The controller sits between the NAND and the interface for the host. It acts as a processor to manage the operation of the NAND component and is a standard interface for easy integration into host systems.

 

Note that NAND capacity doesn’t have to be limited because of space. In small SSDs—for example, mircoSD cards—the NAND and controller die are stacked, and wire bonds are used to create connections. A surprising number of NAND die can be stacked, so it’s possible to have 16 stacked die in one small-packaged SSD.

 

Controller Architecture

The shape of a controller is less important than the placement and features. If you look at an SSD, you will find the controller sitting behind the area where the card is actually plugged into the host system and in front of the NAND components. The only exception is when it is stacked in a small SSD.

 

The controller is responsible for some of the most important functions of the SSD. These include read and write caching, ECC, wear leveling, and read disturb management. It also performs bad block mapping. Without these features, the SSD would wear out prematurely and may not function as reliably as necessary.

 

Delkin’s customer support team is happy to answer your questions about SSD architecture and how to select the right rugged memory solution for your industrial application. Contact us today for more information.

 

Contact

  • This field is for validation purposes and should be left unchanged.

Related Posts

Delkin Applications
Top Reasons for Industrial Flash Storage Use in Transportation Applications

  Many modes of transportation including motor vehicles, trains, and aircraft use industrial flash storage...

Life Cycle Management
Technical Success Story: Program/Erase Cycles and SMART Commands

  A challenge faced by application engineers is the concept of balancing reliability and industrial...

Utility+ msata
Solid State Flash Drive SATA

  A solid state flash drive SATA is an SSD that uses the SATA interface....

A Look at Legacy Electronics Memory

  Although conventional wisdom dictates using the newest technology possible, it is not always feasible...

Write Protection

  Purpose of Write Protection Write protection is a feature on flash storage cards and other...

Flash Storage Interface- NAND vs. NVMe

  NAND vs. NVMe- The need for data storage capacity and speed in industrial applications...

Technical Success Stories: Industrial Flash Storage Customization

  “One-size-fits-all does not work for our embedded/industrial high capacity application. Flash storage customization is...

A Look at microSD Memory Suppliers

  Are you looking for reliable, rugged storage for a device used in industrial operating...

Industrial Flash Storage in Flight Data Recorders

Flight data recorders are a key component of aviation safety. Information gleaned from flight...

Technical Success Story: Locked BOM Maximizes Performance and Speed

  A locked BOM, or bill of materials, is one of the key advantages to...