17586896. STORAGE DEVICES, STORAGE CONTROLLERS, AND OPERATING METHODS OF STORAGE CONTROLLERS simplified abstract (Samsung Electronics Co., Ltd.)

STORAGE DEVICES, STORAGE CONTROLLERS, AND OPERATING METHODS OF STORAGE CONTROLLERS

Organization Name

Samsung Electronics Co., Ltd.

Inventor(s)

Chanha Kim of Hwaseong-si (KR)

Gyeongmin Nam of Seoul (KR)

Seungryong Jang of Yangpyeong-gun (KR)

STORAGE DEVICES, STORAGE CONTROLLERS, AND OPERATING METHODS OF STORAGE CONTROLLERS - A simplified explanation of the abstract

This abstract first appeared for US patent application 17586896 titled 'STORAGE DEVICES, STORAGE CONTROLLERS, AND OPERATING METHODS OF STORAGE CONTROLLERS

Simplified Explanation

The patent application describes a storage device and controller that optimize data storage in a non-volatile memory. Here are the key points:

• The storage device includes a non-volatile memory and a storage controller.
• The non-volatile memory is divided into memory blocks, each containing physical units with different retention strengths.
• Retention strength refers to the time a physical unit can retain data before it needs to be reclaimed.
• The storage controller receives a write request and data from a host.
• It selects a physical unit based on the "hotness" of the data (how frequently it is accessed) and the retention strengths of the physical units.
• The controller then writes the data to the selected physical unit.

Potential applications of this technology:

• Data storage in solid-state drives (SSDs) and other non-volatile memory devices.
• Cloud storage systems.
• Data centers and server farms.

Problems solved by this technology:

• Uneven wear and tear on physical units in non-volatile memory devices.
• Efficient utilization of storage space by placing frequently accessed data in physical units with higher retention strengths.

Benefits of this technology:

• Improved reliability and longevity of non-volatile memory devices.
• Enhanced performance by optimizing data placement.
• Increased storage efficiency by reducing the need for frequent data reclamation.

Original Abstract Submitted

Provided are a storage device, a storage controller, and an operating method of the storage controller. The storage device according to the inventive concept includes a non-volatile memory and a storage controller. The non-volatile memory includes a plurality of memory blocks, each memory block includes physical units having different retention strengths due to process variations, and the retention strengths respectively correspond to times that physical units retain data before respective reclaim operations for the physical units. The storage controller receives a write request and data from a host, selects a first physical unit based on hotness of data and retention strengths, and controls the non-volatile memory to write data to the first physical unit.