IBM TS2900 Setup, Operator, And Service Manual page 245

microprogram. A group of microinstructions that
when executed performs a preplanned function. The
term microprogram represents a dynamic arrangement
or selection of one or more groups of microinstructions
for execution to perform a particular function. The term
microcode represents microinstructions used in a
product as an alternative to hard-wired circuitry to
implement certain functions of a processor or other
system component.
MIM. Media information message.
mm. Millimeter.
modifier. That which changes the meaning.
mount a device. To assign an I/O device with a request
to the operator.
MP. Microprocessor.
ms. Millisecond.
MSG. Message.
multipath. Pertaining to using more than one path.
N
N/A. Not applicable.
Network Address Translation (NAT). NAT involves
rewriting the source and/or destination addresses of IP
packets as they pass through a router or firewall. Most
systems using NAT do so in order to enable multiple
hosts on a private network to access the Internet using a
single public IP address.
node. In a network, a point at which one or more
functional units connect channels or data circuits.
NTP. Network Time Protocol. This allows the library to
set its internal date and time based on the date and time
of a sever.
NVS. Nonvolatile storage. A storage device whose
contents are not lost when power is cut off.
O
oersted. The unit of magnetic field strength in the
centimeter-gram-second (cgs) electromagnetic system.
The oersted is the magnetic field strength in the interior
of an elongated, uniformly wound solenoid that is
excited with a linear current density in its winding of
one abampere per 4π centimeters of axial length.
offline. Pertaining to the operation of a functional unit
without the continual control of a computer. Contrast
with online.
online. Pertaining to the operation of a functional unit
that is under the continual control of a computer.
Contrast with offline.
OPER. Operation.
ov. Over voltage.
overrun. Loss of data because a receiving device is
unable to accept data at the rate it is transmitted.
overtightening. To tighten too much.
P
parameter. A variable that is given a constant value for
a specified application and that may denote the
application.
p bit. Parity bit.
PC. Parity check.
PCC. Power control compartment.
PDF. Portable Document Format.
PE. Parity error. Product engineer.
PFS. Perfect forward secrecy.
pick. Pertaining to the library, to remove, by means of
a robotic device, a tape cartridge from a storage slot or
drive.
picker. A robotic mechanism located inside the library
that moves cartridges between the cartridge storage slots
and the drive. See accessor.
PM. Preventive maintenance.
POR. Power-on reset.
port. A physical connection for communication
between the 3590 and the host processor. The 3590 has
two SCSI ports.
Portable Document Format (PDF). A standard
specified by Adobe Systems, Incorporated, for the
electronic distribution of documents. PDF files are
compact, can be distributed globally (via e-mail, the
Web, intranets, or CD-ROM), and can be viewed with the
Acrobat Reader, which is software from Adobe Systems
that can be downloaded at no cost from the Adobe
Systems home page.
Private key. A cryptographic key used to decrypt a
message.
PROM. Programmable read only memory.
PS. Power supply.
I-7
Glossary