Unidades de disco duro interno Samsung 1.8 en factor de forma

Samsung

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How to Choose an Internal Hard Drive

No matter whether you have a small 64 GB flash drive or a 1 TB SSD, almost every computer relies on some form of internal hard drive to store data and applications. Choosing the right drive is finding a balance between speed and capacity.

What About Form Factors?

Internal hard drives come in three main form factors, not counting those that came of the introduction of internal SSDs. Solid state technology enabled a wide variety of new form factors as they were not bound by the requirement to maintain a vacuum in which to spin the platters. Despite this, many NAND-based drives use the existing internal hard drive form factors. The three primary form factors are:

  • 3.5-Inch: These large hard drives are primarily used in desktop and server applications. Because the total amount of storage available on any hard drive is directly related to the surface area of the drive they offer the greatest capacity, ranging from several hundred GB to as much as 10 TB.
  • 2.5-Inch: Introduced with laptops, the smaller 2.5-inch size offers storage capacities as great as 4 TB and can easily exceed 500 GB on even entry-level models. This is also a common size for SATA internal SSDs.
  • 1.8-Inch: Common on devices like the iPod Classic, the 1.8-inch hard drive was slowly phased out as planar flash and later V-NAND took over the industry. These internal hard drives topped out at approximately 320 GB.

What About Interfaces?

Most Samsung internal hard drives use the SATA interface. An internal SSD may use an M.2 or PCI Express interface, but you are not likely to find either when using conventional internal hard drives as neither connector is designed to withstand the vibrational stresses imposed by rotating hard drives. Using an internal SATA connector allows the drive to be mounted into place with screws that can damp the stresses into the laptop frame. There are three main SATA revisions:

  • SATA I: Operating at 1.5 Gbps, this interface replaced PATA and provided a slight speed increase.
  • SATA II: Boosting the data transfer rate to 3.0 Gbps, this revision also introduced advanced features like native command queuing.
  • SATA III: The third revision maintained backwards compatibility with both previous versions while once again doubling the data transfer rate, this time to 6 Gbps.

Installing Hard Drives

As with any other internal component, you have to open the case to install a Samsung hard drive. Luckily most desktop computers have easily opened cases, and many laptops feature a hard drive access door, so you can replace your 120 GB drive with a larger one if you so desire. Just be sure to fasten it down securely due to the vibration.

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