In Which Systems Is a 2.5-Inch Hard Drive (HDD) Used?

In the market there are only two types of storage devices that can be used for storing large files and backup them for the future. One of them is the traditional, old-fashioned, rotational hard disk drive (HDD) which is still the most commonly used storage subsystem in most of modern computers. And the second is the NAND flash-based, super-speed solid state drive (SSD). These two types are widely used all over the world, and both come in a 2.5-inch form factor which makes it suitable for laptops and PS4 and with a drive bay can fit also in a desktop.

In a personal computer, a hard disk drive (HDD) is the mechanism that controls the positioning, reading, and writing of the hard disk, which furnishes the largest amount of data storage for the PC. Although the hard disk drive (often shortened to “hard drive”) and the hard disk are not the same thing, they are packaged as a unit and so either term is sometimes used to refer to the whole unit.

Hard Disk Drives In Modern Systems

Ever since they hit the mainstream consumer market in the late 2000s, SSDs have proven to be one of the most popular upgrades and add-on options for new systems. If you’ve used one, it’s easy to see why. Consumers generally needn’t fret these days about what data-transfer technology their laptop or phone uses to save files like photos or apps. Even using the best laptop SSD may require extra cost on you more than what you expect. The theoretical limit of magnetic storage, called the superparamagnetic limit—about 1Tbit per square inch of storage density—is fast approaching. Increasing the density beyond that will lead to data corruption issues. Currently, Seagate’s drives store data at up to 625Gbits per square inch of storage areal density. That’s especially the case since computing devices have shifted gradually from desktops that can be upgraded with more memory and new hard drives to sealed-chassis devices like sleek laptops and tablets. In earlier days, consumers could get caught in “bus wars” that pitted one interconnect against another and ran the risk that people would buy a component that didn’t actually work in their computer. The gap between the speed of the CPU and the speed of traditional spinning media is so huge, systems that are far too old for gaming or high-end business tasks still benefit from faster storage. a 1TB capacity SSD is too large for many users currently but it’s going to be small and insufficient just a few years later. “With SMR technology, Seagate is on track to improve areal density by up to 25% or 1.25TB per disk, delivering hard drives with the lowest cost per gigabyte and reaching capacities of 5TB and beyond,” Mark Re, Seagate’s chief technology officer, said in a statement. SSDs have advanced at a fairly rapid clip over the last six years, including the recent debut of 3D NAND, which promises to significantly improve SSD density over the next 5-7 years. Unfortunately, these improvements have also hatched a cottage industry of rather radical claims regarding what’s possible in the longer term.

Solid State Drives (SSD) The Continuous Competitor

Interestingly, the roadmap shows that a technology called bit pattern media (with the magnetic media broken into small regions on the disk surface) will be introduced about 2021 combined with SMR or an extension to SMR called Two Dimensional Magnetic Recording (TDMR). The density problem came about when Seagate and other drive manufacturers pressed the limits of how close they could squeeze tracks together on a drive platter. For a mental picture of platter tracks, think of an LP vinyl record, except on a microscopic level. Going for the largest SSD in the market will not always resolve your problems.

First, while it’s true that SSD capacities should jump from the advent of 3D NAND stacking, hard drive capacities aren’t standing still. 20TB drives are expected by 2020, possibly assisted by HAMR (heat-assisted magnetic recording). Helium drives, pioneered by HGST, also have the ability to allow for further drive stacking, increasing capacities without a corresponding increase in areal density. The researchers found they could record information using only heat -previously unimaginable. York physicist Thomas Ostler said: ‘Instead of using a magnetic field to record information on a magnetic medium, we harnessed much stronger internal forces and recorded information using only heat.’ A 1TB SSD today can be had for as little as $349, but a 1TB HDD from NewEgg is $48 for a laptop drive — which means you can bet Dell, Lenovo, and HP don’t pay anything like that much for the same capacity.

The closer the tracks of a drive platter are squeezed together, the more data can fit in a disk drive. But, the closer together the tracks get squeezed, the greater risk of data corruption and read errors—that is, the read/write head of a hard disk drive cannot discern the difference between tracks. In between the tracks are buffer areas to help the read/write heads track accurately. This will rapidly be combined with HAMR, which will result in up to 10 Terra-bit per square inch (Tbpsi) areal densities by 2025. Note that today’s HDDs have an areal density as high as 0.86 Tbpsi. This implies that a 3.5-inch HDD built with that technology could have about 10 X the capacity of the 10 TB HDDs in 2025, or 100 TB.

What About PS4?

Ideally, 128GB (and in some situations 64GB) is enough for the operating system, programs and some games. You shouldn’t store media (like music, videos or pictures) on a Solid State Drive because the fuller the SSD gets, the slower it will run. See how a 2TB Hard Drive (HDD) for PS4 can last with you years without worrying about running out of space.

Hard drives today typically use perpendicular magnetic recording (PMR), a method of laying down data on a platter that creates tracks that are about 75 nanometers wide, which is smaller than a flu virus. Seagate introduced its first PMR drive in 2007. The drive, the Barracuda, held 250GB of data per platter. That grew to 1TB per platter by this year.

In early 2013, Sony announced that an event known as PlayStation Meeting 2013 would be held in New York City, U.S., on February 20, 2013, to cover the “future of PlayStation”. Sony officially announced the PlayStation 4 at the event. You won’t feel a significant change when starting your PC or launching programs, but file transfer speeds might slow down a little, which is why a SSD should be used only for the installation of operating system and applications. They revealed details about the console’s hardware and discussed some of the new features it will introduce. Sony also showed off real-time footage of games in development, as well as some technical demonstrations. ony then released more information about the console and unveiled the device itself in June 2013 at the Electronic Entertainment Expo.