What Are HDD, SSHD and SSD Drives? How to Tell HDD, SSHD and SSD Apart

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🇻🇳 Đọc bằng tiếng Việt

I) Concepts

HDD  is a traditional hard drive. Its basic working principle is a round platter made of aluminum (or glass, or ceramic) coated with a magnetic material. In the middle of the drive is a spinning motor for reading/writing data. Combined with these parts are electronic circuit boards that guide the read/write head to the right position on that spinning magnetic platter to decode the information
HDDs spin at 5400 rpm or, higher, 7200 rpm (the higher the rpm, the slightly faster the drive works). HDDs also come in several generations that indicate their processing capability: earlier there was Sata 1, then higher Sata 2 (read/write speed of 200 MB/s) and Sata 3 (read/write speed of 6 Gbp/s)
SSHD is a hybrid hard drive between an SSD and an HDD. It is a traditional HDD. In fact, each SSHD integrates a small amount of NAND Flash memory (from SSD) onto a regular HDD, with a capacity of about 8Gb or more. Data blocks are processed automatically and selectively by software. It decides what to store where. This processing is stored right in the SSHD’s firmware

SSD is a newer-generation hard drive that is more advanced than an HDD. Data on an SSD is stored in flash chips, is not affected by data fragmentation like on an HDD, is safe and secure, and reads data faster than an HDD.
They serve the same function, but SSDs outperform HDDs in these ways:

• Faster operating system boot times
• Faster copying/exporting of data to other devices
• Software on the computer runs faster
• Excellent data protection thanks to high shock resistance, plus more durable because it is made of good components
• Quieter operation and more efficient heat dissipation
• High bandwidth for reading/writing data, which boosts the computer’s performance

Technology is now developing at a dizzying pace, and SSD prices are currently quite cheap

II) How to Tell HDD, SSHD and SSD Apart with HD Tune

First, download HD Tune here

Open HD Tune and go to the Info tab. Pay attention to the Buffer and Rotation Speed fields

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