Integrated Drive Electronics (IDE) describes a hard disk controller circuitry. The hard drive in a computer is also called the hard disk, hard disk drive or fixed disk drive. Most computers have one hard drive located inside the computer case. If a computer has one hard drive, it is usually called drive C. If a computer has additional hard drives, they are called drives D, E, F, etc. The amount of information a hard drive can store is measured in bytes.
A tape drive is a device that copies files from a computer onto tape cartridges. Tape drives are also called tape backup units. A tape drive can be inside the computer case or connected to the computer by a cable. An external tape drive is more expensive, but can be used with more than one computer. A tape drive stores information on tape cartridges. These cartridges are similar to the cassettes you buy at music stores. Most people use tape drives to make backup copies of files stored on a computer. This provides extra copies in case the original files are stolen or damaged due to viruses or computer failure.
Removable cartridges are hard disks encased in a metal or plastic cartridge, so they can be removed just like a floppy disk. Removable cartridges are very fast, though usually not as fast as fixed hard disks. Common types include the Iomega Jaz and Zip drives.
A CD-ROM (Compact Disc-Read Only Memory) drive is a device that reads information stored on compact discs. The CD-ROM disc is the same type of disc you buy at a music store. A single CD-ROM disc can store more than 600 MB of data. CD-R (Compact-Disk Recordable) driveis a type of disk drive that can create CD-ROMs and audio CDs. The CD-R drive is a WORM (Write-once, read many) type of device. It uses a special recordable CR-ROM disk that, once recorded, can be played back or read in any standard CD-ROM drive.
The DVD (Digital Versatile Disk) specification supports disks with capacities of from 4.7GB to 17GB and access rates of 600KBps to 1.3 MBps. One of the best features of DVD drives is that they are backward compatible with CD-ROMs. This means that DVD players can play old CD-ROMs, CD-I disks, and video CDs, as well as new DVD-ROMs. Newer DVD players can also read CD-R disks. CD-RW (Compact Disk-Rewritable) drives are devices that can write and erase rewritable CR-RW disks.
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The speed at which bits of data are sent. For example, this could describe the rate at which the bits of information are read from the disk and sent to the drive's controller (internal rate), or characterize data exchange between the controller and PC's CPU (external rate).
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An interface that allows up to 2 Gigabit per second data transfer and maps several common transport protocols including IP and SCSI, allowing it to merge high-speed I/O and network functionality in a single connectivity technology.
FireWire® is a cross-platform implementation of the high-speed serial data bus -- defined by IEEE Standard 1394 -- that can move large amounts of data between computers and peripheral devices. It features simplified cabling, hot swapping, and transfer speeds of up to 400 megabits per second. FireWire speeds up the movement of multimedia data and large files and enables the connection of digital consumer products -- including digital camcorders, digital videotapes, digital videodisks, set-top boxes, and music systems -- directly to a personal computer.
SCSI (Small Computer System Interface) is a parallel interface standard used by Apple Macintosh computers, PCs, and many UNIX systems for attaching peripheral devices to computers.
Universal Serial Bus. The standard serial bus for low-to-medium speed peripheral device connections to Personal Computers, including keyboards, mice, modems, printers, joysticks, audio functions, monitor controls, etc.
Unlisted, specialized, or proprietary configuration.
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Manufacturers use many of these terms interchangeably. Keeping this in mind, we have delineated the options as follows to help you locate the ideal item(s) for your needs.
The device is designed to be attached to, or within, the supporting frame of a structure (chassis), exclusive of the body or housing. Some chassis varieties are designed to be mounted within a rack.
The device is designed to be mounted directly into a rack. It comes equipped with the necessary rail guides, flanges, or tabs to be mounted in this fashion. The standard 19" rack is typical of this style.
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This is the full-required range of ambient operating temperature.
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