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Types Of Computer Hard Disk Drives

Computer hard disk drives

Computers suppose hard disc drives (HDDs) to store information for good. they’re storage devices used to save and retrieve digital data which will be needed for future reference.

Hard drives are non-volatile, which means that they preserve information even after they don’t have power. the data hold on remains safe and intact unless the drive is destroyed or interfered with.

The information is held on or retrieved during a random-access manner as hostile sequent access. this means that blocks of information are accessed at any time they’re needed while not probing other data blocks.

Hard Disk Drives Has Stood the test of time

Hard disk drives were introduced in 1956 by IBM. At the time, they were getting used to general-purpose mainframes and minicomputers. Like alternative electronic devices, these have witnessed varied technological advancements over the years. this is often in terms of capability, size, shape, internal structure, performance, interface, and modes of storing data for Best Hard Drive for PS4.

These varied changes have created HDDs here to remain, not like alternative devices that became obsolete the moment they are introduced within the market.

Hard Drive types

Currently, we can group hard drives into four types:

• Parallel Advanced Technology Attachment (PATA)

• Serial ATA (SATA)

• small computer system Interface (SCSI)

• Solid State Drives (SSD)

Parallel Advanced Technology Attachment

These were the primary kinds of hard disc drives and they made use of the Parallel ATA interface customary to attach to computers. These kinds of drives are those we talk over with as Integrated Drive Electronics (IDE) and increased Integrated Drive physics (EIDE) drives.

These PATA drives were introduced by Western Digital back in 1986. They provided a standard drive interface technology for connecting hard drives and alternative devices to computers. the information transfer rate will go up to 133MB/s and most of the two devices are connected to a drive channel. Most of the motherboards have a provision of 2 channels, so a complete of four EIDE devices are connected internally.

They make use of a 40 or 80 wire ribbon cable transferring multiple bits of information simultaneously in parallel. These drives store information by the use of magnetism. the interior structure is one made from mechanical moving parts. they need to be superseded by serial ATA.

Serial ATA Storage Drives

These arduous drives have replaced the PATA drives in desktop and laptop computers. the most physical distinction between the 2 is that the interface, though their methodology of connecting to a laptop is that the same. Here are some blessings of SATA hard disc Drives. price noting is that their capacities vary plenty then will the costs. once shopping for a drive, you need to grasp its storage capability and the way abundant storage you would like.

• SATA drives will transfer data quicker than PATA sorts by using serial signal technology.

• SATA cables are agents and additional versatile than PATA cables.

• they need a 7-pin information association, with cable limit of one meter.

• Disks don’t share information measure as a result of there’s just one drive allowed per SATA controller chip on the pc motherboard.

• They consume less power. They only require 250 mV as opposed to 5V for PATA.

Small computer system Interface

These are quite almost like IDE arduous drives however they create use of the little automatic data processing system Interface to attach to the pc. SCSI drives are connected internally or outwardly. Devices that are connected during a SCSI have to be compelled to be terminated at the top. Here are a number of their blessings.

They are quick.

They are terribly reliable.

Good for 24/7 operations.

Have more robust scalability and flexibility in arrays.

Well-adapted for storing and moving giant amounts of information.

Solid State Drives

These are the newest in drive technology that we’ve within the industry. they’re all totally different from the opposite drives therein they are doing not contain moving elements. They conjointly don’t store information using magnetism. Instead, they create the use of nonvolatile storage technology. they create use of integrated circuits or semiconductor devices to store information for good, a minimum of till they’re erased. Here are a number of their blessings.


Faster information access.

Less liable to shock.

Lower access times and latency.


Less power usage.

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