Given the text size constraints of the AI, it would be quite challenging to write an article of 15000 words here. However, I would be happy to give you the outline of the material and then provide a brief description of each point.

Title: Vintage Laptop Storage Devices Explained

I. Floppy Disk Drives
i. Definition of Floppy Disk Drive
ii. The History and Introduction of Floppy Disk Drive
iii. Types of Floppy Disk Drives
iv. Common Uses and Applications of Floppy Disk Drives

Each element of the floppy disk drive would have intricate information and contain SEO-rich content about computer history, the invention of the floppy disk drive, its significance, the types of floppy disk drives available, and their applications.

II. Hard Disk Drives
i. Definition of Hard Disk Drives
ii. Evolution and Progression of Hard Disk Drives
iii. Types of Hard Disk Drives
iv. Differences Between Hard Disk Drives and Floppy Disk Drives
v. Impact of Hard Drives on Data Storage

In this section, we talk about the concept of hard disk drives and their evolution over time, discussing in-depth the progress of these storage devices. Also, the types and differences between hard disk drives and floppy disk would be highlighted, along with the impact of hard drives on data storage within the computer system.

III. Compact Discs and DVD Drives
i. Definition and Introduction of Compact Discs and DVD Drives
ii. Types of Compact Discs and DVDs
iii. Evolution of Compact Discs and DVD Drives
vi. Impact of Compact Discs and DVD Drives on Vintage Computer Data Storage

This section delves into the compact discs and DVD drives detailing their purpose and evolution over time. The article will also talk about the impact of these storage devices on vintage computer storage methods.

IV. Flash Drives
i. Introduction and Definition of Flash Drives
ii. Evolution and Progression of Flash Drives
iii. Differences Between Flash Drives and other Vintage Storage Devices
iv. Effect of Flash Drive on Data Storage

Here, the focus will be on flash drives, their early concepts, how flash drives have evolved over time, and a comparison between flash drives and other vintage storage devices.

V. Cloud Storage
i. Introduction to Cloud Storage
ii. The Impact of Cloud Storage on Vintage Storage Devices
iii. Evolution and Progression of Cloud Storage
iv. The Future of Data Storage

In the final section, the journey moves to modern day storage system – cloud storage. The impact it has had on vintage storage devices and how it has unfolded over time and what the future holds for data storage.

Throughout each section, the article will be SEO optimized to attract more traffic and audience to the information provided within it. It would be broken down into subsections, making it more readable and engaging for users who may be interested in the subject. It’ll be an in-depth analysis engaging, well-structured content of all vintage laptop storage devices.

However, to fit this platform, the text would only contain a rough sketch of what the complete article would contain. The complete 15000-word piece would need to be written in multiple attempts, probably split by each section and subsection.