IBM DPSS-309170 Installation Manual - Page 25

Hard disk drive, Interface, Jumpers, Jumper settings, Motherboard, Multimode, Operating system,

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IBM storage products Hard disk drive (HDD) A stand alone disk drive that reads and writes data onto rigid disks and can be attached to a port on the system unit. Synonymous with fixed disk drive and hard drive. Interface A hardware or software protocol, contained in the electronics of the disk controller and drive, that manages the exchange of data between the hard disk drive and the computer. The most common interfaces for small computer systems are ATA (IDE) and SCSI. Jumpers A small electrical conductor covered with plastic that connects a pair of pins on a jumper block, thereby enabling a particular function in the drive. Jumper settings Different modes which are achieved by placing a jumper on a particular pair of pins on a device. These modes determine the behavior of the device. Settings are changeable by the user, but remain constant during operation. See Jumpers. LVD (Low Voltage Differential) A highly compatible computer disk drive interface that is faster and more reliable than SCSI. Also known as Ultra2 SCSI. Motherboard Holds the computer's main processors and circuitry, and also contains the memory, BIOS, interconnection circuitry and expansion slots. Multimode A drive that can operate on an LVD bus or a Single-ended bus. Operating system Software that controls the execution of programs and may provide functions such as resource allocation, scheduling, input/output control, and data management. Although operating systems are predominantly software, partial hardware implementations are possible. Partition A portion of a hard drive dedicated to a particular operating system or application and accessed as a single logical volume. SCSI (Small Computer System Interface) An intelligent parallel peripheral interface characterized by its use of high level communication between devices. Pronounced "scuzzy". Termination The signals on a SCSI bus must be terminated at both ends of the bus. This is generally done by the controller automatically and requires an "external" terminator on the last connector of the bus. IBM Technology Group Support Center Page 25 07N5612IG10

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Hard disk drive
(HDD)
A stand alone disk drive that reads and writes data onto rigid disks and can be
attached to a port on the system unit. Synonymous with
fixed disk drive
and
hard drive
.
Interface
A hardware or software protocol, contained in the electronics of the disk controller and drive,
that manages the exchange of data between the hard disk drive and the computer. The most common
interfaces for small computer systems are ATA (IDE) and SCSI.
Jumpers
A small electrical conductor covered with plastic that connects a pair of pins on a jumper block,
thereby enabling a particular function in the drive.
Jumper settings
Different modes which are achieved by placing a jumper on a particular pair of pins on
a device. These modes determine the behavior of the device. Settings are changeable by the user, but
remain constant during operation. See
Jumpers.
LVD
(Low Voltage Differential)
A highly compatible computer disk drive interface that is faster and more
reliable than SCSI. Also known as
Ultra2 SCSI
.
Motherboard
Holds the computer’s main processors and circuitry, and also contains the memory, BIOS,
interconnection circuitry and expansion slots.
Multimode
A drive that can operate on an LVD bus or a Single-ended bus.
Operating system
Software that controls the execution of programs and may provide functions such as
resource allocation, scheduling, input/output control, and data management. Although operating systems
are predominantly software, partial hardware implementations are possible.
Partition
A portion of a hard drive dedicated to a particular operating system or application and
accessed as a single logical volume.
SCSI (Small Computer System Interface)
An intelligent parallel peripheral interface characterized by
its use of high level communication between devices.
Pronounced “scuzzy”.
Termination
The signals on a SCSI bus must be terminated at both ends of the bus.
This is generally
done by the controller automatically and requires an “external” terminator on the last connector of the
bus.
IBM storage products
Page 25
IBM Technology Group Support Center
07N5612IG10