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hard disk interface

Over the years, the interfaces for hard disk drives have had to constantly adapt to the new requirements in terms of storage capacity and data transfer rate. Since both sizes are subject to rapid development, the internal hard disk interfaces have to be constantly revised and, if they no longer meet the set requirements, new interface standards replace older technologies.

The development can be seen in the memory sizes of hard disks, which were 10 megabytes( MB) at the beginning of the PC era. It is not possible to make a concrete statement about the memory size of hard disk drives commonly used today because the value is already outdated in a very short time.

In the late 1980s and 1990s, Small ComputerSystem Interface( SCSI) and the Serial Attached SCSI( SAS) based on it were used as hard disk drive standards. Later, this technology was replaced in personalcomputers (PCs) by Integrated Drive Electronics( IDE) and Advanced Technology Attachment( ATA) in Parallel ATA ( PATA) and Serial ATA( SATA) versions. SATA supports data rates of 6 Gbit/s in SATA Revision 3.0. Even faster data transfers are possible with SATA Express( SATAe) with net transfer rates of 7.8 Gbit/s and 15.7 Gbit/s.

Besides the aforementioned internal hard drive interfaces, there are also various external ones to choose from. These include the well-known peripheral interfaces like the USB interface in its various versions, Thunderbolt and FireWire.

Informations:
Englisch: hard disk interface
Updated at: 27.10.2016
#Words: 230
Links: hard disk (HD), capacity (C), data transfer rate (DTR), interface (I/F), memory
Translations: DE
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