Definition and Types of Hard Disk
my name is justin ehsan my first year student mcio desert state university I will explore a little on the hard drive
Definition of the hard disk is a secondary storage device where data is stored as magnetic pulses on a rotating metal disc interconnected. or it can be said with a hard disk. Data will be stored in concentric circles this is called track.pada each track is divided into several sections which are also called sectors. to perform read and write operations of data from and to disk, hard disk using the head to do it, which is in every dish. This head will move looking for sector-specific sectors corresponding to the operation performed on it. the time required to search for the sector is called seek time. after he found the desired sector, then the head will rotate to look for tracks. the time required to search for this track known latency. hard disk storage media that is designed to be used to save the data in a large capacity. The foundation of this case an application program that is not permitted to be in one diskette furthermore oblige substantial capacity media record such an org database. not just that, the hard drive is additionally anticipated that will be balanced from the rate of access. speed floppy disk when compared to the usual, very much. this is because hard drives have different mechanisms and materials technology that is certainly better than the usual floppy. if no hard drive, can only imagine how much that must be provided to store an agency or employment data store application program. this is certainly not efficient. plus more time reading is very slow when using the conventional disk storage media. if opened,seen the hard circle on the end bertuas arm joined to the rotatable plate information put away in the hard plate won't be lost when not given voltage. in a hard plate, there are normally more than one circle to build the information limit that can be suited.
Type - the type of hard drive
disk ata / eide hard disk with type eide (enhanced integrated drive electronic) or type ata (advanced technology attachment) is the most recent rendition of a standard circle interfaces suitable for association with the transport, numerous producers have a scope of plate drive interface with eide/ ata, Reviews such circles can be associated Directly to the pci transport, the which is utilized as a part of numerous (PC). eide drive profit / ata significant is the price is quite cheap, because of its use in the PC market. The Necessary lacks one of its main is separate controller for call now drive if the two drives are used together to improve performance. one of the famous manufacturers already include a chip enables the disk controller roomates eide / ata is connected Directly to the motherboard..
scsi circles, numerous plate has a client interface that is intended for association with standard SCSI transport. The plates have a tendency to be more lavish, however has a superior execution, which is conceivable because of abundance than the transport pci scsi transport. concurrent access can be made to various circle drives in light of the fact that the interface drives are effectively joined with the SCSI transport just when the drive is prepared for information exchange. this is especially useful in applications where there are a large number of requests for small files, which often occurs in the computer that is used as a file server.
Disk raid, promising outstanding performance and provide a great and reliable storage. The disks are used both in high-performance computer or in systems that require reliability for higher than normal levels.be that as it may, by the decrease in costs to a more reasonable level, the plate gets to be more alluring actually for a machine framework with size - normal.
Sata disk, hard disk with sata type (serial advanced technology attachment), ie ata disk interface (advanced technology attachment) with the serial version using thin wires which have a total small cable about two thirds of the total cable with type eide hard drive or disk ata totaling 39 pins and sata have a very high speed data transmission as well as reducing the latency. so that the serial bus is capable of exceeding the speed parallel bus.
Sata in exchanging information consecutively or through a serial link and sata strategy additionally organize their own particular circles that are associated with the motherboard without any expert or slave framework, so the sata link must be utilized on one hard plate. the sort of hard plate that has been examined, all in the classification of interior hard circle, that is introduced in the inner hard plate cpu.selain there are likewise outside hard drive (hard plates that are past the cpu), so it can be moved - to move. have an outside hard plate revolution pace of 7200 rpm, simple establishment, no compelling reason to dismantle the pc and simply associate the usb port to pc, and can exchange information at 480 Mbps.
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