Hard Drives are one of the most fundamental forms of data storage and processing. They were first introduced in 1956 by the company, IBM. Over these years, they have witnessed many technological advances. HDDs are connected to systems by standard interface cables such as PATA (Parallel ATA), SATA (Serial ATA), USB or SAS (Serial Attached SCSI) cables.
There are four types of hard drives at present . They are
- Parallel ATA (PATA)
- Serial ATA (SATA)
- Small Computer System Interface (SCSI)
- Solid State Drives (SSD)
Parallel ATA (PATA)
PATA stands for Parallel Advanced Technology Attachment which is a bus interface used for connecting secondary storage devices like hard disks. This was first developed by Western Digital. They are also known as integrated drive electronics (IDE). This became the basis for modern hard drive construction. In recent years, the PATA interface has been slowly disappearing.
Serial ATA (SATA)
SATA stands for Serial Advanced Technology Attachment. SATA replaced PATA due to better performance. They transfer data faster and use less power. Moreover SATA cables are thinner and more flexible. It supports almost all computer motherboards and OS.
Small Computer System Interface (SCSI)-IDE
SCSI is a standard interface for connecting peripheral devices to a PC. It allow computers to communicate with peripheral hardware such as disk drives, tape , CD-ROM , printers and scanners faster and more flexibly than previous parallel data transfer interfaces. Although not all devices support all levels of SCSI, SCSI standards are generally backward-compatible.
SSD (Solid-State Drives)
SSD is one of the latest types of hard drives. Unlike SATA ,SSD stores data in integrated circuits. Since SSD don’t have moving parts not only they’re more reliable but also more shock-resistant . SSD’s are much faster and offer instant-load performance. SSD became very common in laptops now. With the same storage space, the cost of SSD is three to four times that of SATA hard drives
Now, almost everyone own a hard drive, in any form or size or brand. Each have their respective use and function. Proper care should be taken while handling the drives in order to avoid Data loss. Whenever there is a data lose or device failures, always approach a professional Data recovery company.
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