 IDD
Intelligent Disk Drive. Usually refers to disk
drives with either a SCSI or ATA interface.
INIT
Initiator : SCSI term that describes any device
that has initiated an input/output operation on another
SCSI device on the bus which in turn is called TARG.
Interleave Factor
If a program occupies several sectors, the
contents of the first sector will first be transmitted
from the controller to the computer system when the
program is read. This sector is then saved in the memory,
which requires a certain period of time. During this
time, however, the disk continues to revolve and so it
would be necessary to wait one complete revolution of the
disk for access to the next sector. During formatting,
the continuous sectors therefore are not arranged one
after the other physically, but staggered to reduce this
waiting time. With an interleave factor of 3, for
instance, two sectors are skipped after each sector read.
This means the controller has time to further process its
data until the disk surface advances two sectors
underneath the head. The next logical sector is physical
sector 4, and so on. Modern hard disks with integrated
controller and own data buffer, the interleave factor is
normally 1:1.
Internet Protocol (IP).
A standard that specifies how packets are passed
through networks. It identifies the format of the packet
and describes how they should be delivered in a seamless
manner. Although it is a separate protocol from TCP, it
is often referred to as TCP/IP because both TCP and IP
protocols are often used together.
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