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.

I2O

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 I2O 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

210 (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.

G-10

DAC960PG and DAC960PJ Installation Guide