IBM iSeries 270 Service Manual page 610

network interface controller (NIC)
Hardware that provides the interface control between system main storage and external
high-speed link (HSL) ports.
OEM Original equipment manufacturer.
odd/even bus pair
An optical link card supports a pair of buses; one has an even number and the other has an odd
number (for example, bus 2 and 3).
optical redundancy
A second optical path used to keep the system operational when a hardware failure occurs.
overview
A general survey or summary.
PAR Problem analysis and resolution.
PCC Power control compartment.
PIP Problem isolation procedure. Written information used by service representatives to repair IBM
equipment. A problem isolation procedure contains actions and yes/no questions that send the
user to the failing part of the equipment.
plenum
A space used for environmental air.
PM Preventive maintenance.
pool (1) A readily available supply.
(2) A designated place to store data.
power off
To turn off the power.
power on
To turn on the power.
primary link
The optical connection between a local optical link card and a remote bus adapter card.
problem isolation procedure
Written information used by service representatives to repair IBM equipment. A problem isolation
procedure contains actions and yes/no questions that send the user to the failing part of the
equipment.
program temporary fix
A temporary solution to, or bypass of, a problem in a licensed program.
PTF Program temporary fix. A temporary solution to, or bypass of, a problem in a licensed program.
reallocate
To allocate again.
restore
To return to an original value or image; for example, to restore data to main storage from auxiliary
storage.
SAL Service action log
SAVSYS tape
A tape that is generated by the SAVSYS command, on which system data is recorded and saved.
SCSI Small Computer System Interface
598
Hardware (Remove and Replace; Part Locations and Listings)