IBM System Storage TS3310 Setup And Operator Manual page 334

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.
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.
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.
PROM. Programmable read only memory.
PS. Power supply.
PWR. Power.
F-6
TS3310 Tape Library Setup and Operator Guide
R
rack. A unit that houses the components of a storage
subsystem, such as the library.
rackmount kit. A packaged collection of articles used
to install the rack mounted version of the library.
RAM. Random access memory.
Random access memory. A storage device into which
data is entered and from which data is retrieved in a
nonsequential manner.
RAS. Reliability, availability, and serviceability.
record. A collection of related data or words, treated
as a unit.
recording density. The number of bits in a single
linear track measured per unit of length of the
recording medium.
recoverable error. An error condition that allows
continued execution of a program.
ref. Reference.
reg. Register.
reinventory. To inventory again.
retension. The process or function of tightening the
tape onto the cartridge, if it is sensed that the tape has
a loose wrap on the cartridge.
robot. Picker.
robotics. Picker assembly.
RPQ. Request for price quotation.
R/W. Read/write.
S
s. Seconds of time.
SAC. Service Action Code. Code developed to indicate
possible FRU or FRU's to replace to repair the
hardware.
scratch cartridge. A data cartridge that contains no
useful data, but can be written to with new data.
SCSI. Small computer system interface.
segment. A part.
sel. Select.
serialize. To change from parallel-by-byte to
serial-by-bit.