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Architects' Tech Alliance
Architects' Tech Alliance
Jan 1, 2024 · Fundamentals

Understanding SSD Architecture: Blocks, Pages, Wear Leveling, and Data Protection

This article explains the core components and operation of SSDs—including controllers, NAND flash, block and page structures, program/erase cycles, garbage collection, wear‑leveling strategies, bad‑block handling, data‑redundancy mechanisms, namespace concepts, over‑provisioning, and key reliability metrics—providing a comprehensive technical overview for storage engineers.

Data ProtectionGarbage CollectionNAND Flash
0 likes · 12 min read
Understanding SSD Architecture: Blocks, Pages, Wear Leveling, and Data Protection
Architects' Tech Alliance
Architects' Tech Alliance
Dec 29, 2022 · Operations

Large-Scale Field Study of SSD Operational Characteristics in Enterprise Storage Systems

This paper presents a FAST 2022 study of nearly two million SSDs from a major storage vendor, revealing key operational traits such as slow PE‑cycle consumption, variable write amplification, wear‑leveling inefficiencies, system fullness growth, and read‑dominant workloads in enterprise environments.

Enterprise StorageSSDWrite Amplification
0 likes · 13 min read
Large-Scale Field Study of SSD Operational Characteristics in Enterprise Storage Systems
Architects' Tech Alliance
Architects' Tech Alliance
Oct 10, 2022 · Fundamentals

All‑Flash Storage System Architecture and Key Functions (Dorado Flash Product Example)

The article explains the fully interconnected architecture of an all‑flash storage system, covering redundant FRU modules, RDMA‑based high‑speed networking, intelligent disk enclosures, SSD structure, wear‑leveling, bad‑block management, data redundancy, and the differences between SAS and NVMe protocols.

All-Flash StorageNVMeRDMA
0 likes · 12 min read
All‑Flash Storage System Architecture and Key Functions (Dorado Flash Product Example)
Architects' Tech Alliance
Architects' Tech Alliance
Aug 28, 2017 · Fundamentals

Understanding SSD Wear Leveling Algorithms and Their Implementation

This article explains how SSD controllers use wear‑leveling algorithms to distribute writes across NAND flash blocks, covering sequential and non‑sequential write scenarios, key assumptions, implementation strategies, and the importance of managing limited erase‑cycle endurance for reliable storage.

EnduranceNAND FlashSSD
0 likes · 6 min read
Understanding SSD Wear Leveling Algorithms and Their Implementation
Architects' Tech Alliance
Architects' Tech Alliance
Aug 6, 2017 · Industry Insights

Inside a Generic SSD Controller: Key Components and Their Roles

This article provides a detailed overview of the main building blocks of a generic SSD controller, explaining how each part—from host interfaces and SMART monitoring to wear leveling, encryption engines, and defect management—interacts with NAND flash to deliver performance, reliability, and security.

ControllerHardwareNAND
0 likes · 7 min read
Inside a Generic SSD Controller: Key Components and Their Roles
Architects' Tech Alliance
Architects' Tech Alliance
Jul 14, 2017 · Industry Insights

How a New ‘Non‑Balance’ Wear‑Leveling Algorithm Can Triple SSD Lifespan

The article explains the background of flash‑memory wear‑leveling, reviews common garbage‑collection strategies, compares classic algorithms such as Greedy, Cost‑Benefit, CAT and CICL, and introduces the Non‑Balance method that evaluates real block endurance to extend SSD life up to three times.

Garbage CollectionSSDStorage Optimization
0 likes · 11 min read
How a New ‘Non‑Balance’ Wear‑Leveling Algorithm Can Triple SSD Lifespan
Qunar Tech Salon
Qunar Tech Salon
May 6, 2015 · Fundamentals

1 PB SSD Endurance Test: Results and Analysis of Multiple Drives

The TechReport SSD endurance experiment reached the 1 PB milestone, documenting the long‑term reliability, wear‑leveling index, error trends, and performance of several SSD models—including Corsair Neutron GTX, Intel SSD 335, Kingston HyperX 3K, and Samsung 840/840 Pro—while highlighting failures and survivorship details.

SMARTSSDStorage Reliability
0 likes · 9 min read
1 PB SSD Endurance Test: Results and Analysis of Multiple Drives