The Definition of Harddisk
Hard disk is medium data storage on a computer that consists
of a collection of magnetic hard disks and spinning, as well as other
electronic components. Hard disks use a flat disc called the platter, which on
both sides are coated with a material that is designed to be able to store
information magnetically. Platter-platter by punching holes in the center are
arranged and rearranged on a spindle. Platter spinning at very high speed which
is controlled by the spindle motor that is connected to the spindle. Special
literacy electromagnetic tool named head mounted on a slider and is used to
store information in a disk or read. Slider mounted on the arm, all of which
are connected mechanically to a single collection on the surface of the disc
and is connected via a device called the actuator. There was also the logic
board to regulate the activity of other components and communicates with the
PC.
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| The Definition of Harddisk |
ATA / EIDE. EIDE hard disk (Enhanced Integrated Drive Electronics) or
ATA (Advanced Technology Attachment) is the latest version of a stAndard disk
interface suitable for connection to the bus. Many manufacturers have a range
of disk with a disk interface EIDE / ATA disk can be connected directly to the
PCI bus and roomates which is used in many PC (personal computer).
SCSI.
Many disks have interfaces designed for connection to a standard SCSI bus. The
disks tend to be more expensive, but have better performance which is possible
due to excess SCSI bus than the PCI bus. Access to the same can be done for
many disk drives as the drive interface is actively connected to the SCSI bus
only when the drive is ready to transfer data. This is especially useful in
applications where there are a large number of requests for small files, which
often happens in a computer used as a file server.
RAID.
Promises great performance and provides a large and reliable storage. Disk is
used both in high-performance computer and in systems that require
dramatically higher reliability than normal levels. However, with the decline
in prices to a more affordable level, the disk becomes more attractive even for
a computer system with size - average.
SATA.
SATA hard disk of the type (Serial Advanced Technology Attachment), the disk
interface ATA (Advanced Technology Attachment) by using the serial version of
the thin cable that has small wires. Total about two-thirds of total hard drive
cable with type EIDE or ATA disks are numbered 39 pins and SATA has very high
speed data transmission and reducing latency. So, this serial bus is able to exceed
the speed of parallel bus.
