G-10
AcceleRAID 170 Installation Guide
I/O
Input/Output, the transmission of information between an external source
and the computer.
I/O Bus
Any path used for the transfer of data and control information between I/O
adapters and storage controllers or storage devices. See also
Bus
.
I
2
O
Intelligent Input/Output, a driver that uses special I/O processes to eliminate
I/O bottlenecks. The processes deal with interrupt handling, buffering, and
data transfer. An I
2
O driver also includes an OS-specific module (OSM),
which handles higher-level OS details, and a hardware device module
(
HDM
), which knows how to communicate with certain devices.
ISA
Industry Standard Architecture, a standard bus (computer interconnection)
architecture associated with the IBM AT motherboard. It allows 16 bits at a
time to flow between the motherboard circuitry and an expansion slot card
and its associated device(s).
JBOD
Just A Bunch of Disks (Drives), a number of disk drives, usually in an
enclosure. JBOD implies that the disks do not use RAID technology and
function independently. All Mylex RAID controllers support JBOD mode.
Jumper
A short piece of electrical conductor encased in plastic used to connect pins
on a device to provide settings that the user can change. The settings remain
constant during operation. For example, jumpers often set SCSI ID,
termination, and IDE master/slave settings.
Kilobyte
2
10
(1,024). Abbreviated as K or KB.
Logical Drive
The logical devices presented to the operating system. System drives are
presented as available disk drives, each with a capacity specified by the
Mylex RAID controller.
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