R
rack A unit that houses the components of a storage subsystem, such as the library.
rackmount kit
A packaged collection of articles that are 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, which are 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.
RFC (Request for Comments)
Request for Comments (RFC) documents are a series of memoranda, which encompasses new
research, innovations, and methodologies applicable to Internet technologies.
RH Relative humidity.
RID tag
Repair identification tag.
RML Rack Mount Line.
robot Picker.
robotics
Picker assembly.
root CA certification
In cryptography, a root certificate from a certificate authority (CA).
RPQ Request for price quotation.
RSA key
Encryption key type.
R/W read/write.
S
s Seconds of time.
SAC Service Action Code. Code that is developed to indicate possible FRU or FRUs to replace to
repair the hardware.
SAN Storage area network.
346 IBM TS3100 Tape Library and TS3200 Tape Library: Setup, Operator, and Service Guide Machine Type 3573