has a 50-year-old hard drive can be described as very slow development, especially in the last few years, hard disk performance is almost stagnant compared to the CPU ., the graphics card is backward too much. .Current can affect the mechanical properties of the key factors that drive speed and capacity per platter, the former due to the mechanical structure of the hard disk itself is difficult to have space to play; while the latter continues. .

Hitachi hard drives as Seagate, Western Digital's competitors, the cost has been an absolute advantage, and also strive to introduce new products first. .The first is from the Hitachi 1TB hard drives, and the first listing of a single platter 1TB Hitachi hard drive product still shows Hitachi is constantly trying to win customers through more recognition. .

Hitachi 1TB hard disk platter front close-up

we have just mentioned, single platter .can affect the mechanical hard drive is the biggest factor, on the one hand to increase the capacity of a single platter hard disk drives can bring to enhance the total capacity, but also conducive to the production cost control. .In addition, the disc track density (number of tracks per unit area) increase represents the increased data density, so that when the disc in the hard work per revolution, the head can read more data, so in the case of the same speed ., the greater its internal hard disk platter capacity the faster data transfer rate. .

Hitachi 1TB platter hard drive on the back close-up

platter 1TB Hitachi hard disk with a new front shell mold, plate .body is used on the generation of mature technology, so not much change the overall thickness, and the old Disc 1TB hard drive similar. .But the back of the PCB panel, it is the first time the use of Hitachi reverse design, to avoid causing damage to parts exposed bump or fall due. .

platter 1TB Hitachi hard disk tag

Hitachi 1TB hard disk platter number HDS721010DLE630, belonging to Hitachi 7K1000.D Desktop .level series, the motor speed is 7200RPM, "630", said SATA3.0 6Gbps rate interface and 32MB cache. .In addition, the origin of which drives China (Shenzhen), the use of a single platter 1TB technology, the voltage than the old Disc 1TB hard drive, 5V reduce 30mA, 12V lower 280mA, hard to further reduce heat, highlighting the advantages of energy saving. .

Hitachi 1TB platter hard drive on the back of the PCB circuit panel

Hitachi 1TB hard disk platter chip close-up (click .Enlarge)

on the map from left to right to drive motor controller, the main control chip and cache particles. .The drive uses the same products and the previous generation of 1TB Disc LSI LOGIC chips, without going through the bridge and the serial to parallel data conversion, you can play real advantage of SATA drives to achieve the interface speed 600MB / s. .However, motor controller and hard disk cache has been updated particles are optimized, which cache the product particles from the old DDR upgrade DDRII, exchange of process data faster. .Here we will both old and new Hitachi 1TB hard to compare the appearance. .

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