rail system
Within the TS4500 tape library, the
support structure over which the
cartridge accessor moves.
read
To acquire or interpret data from a
storage device, from a data medium, or
from another source.
ready
The operating condition that the TS4500
tape library is in when the host
applications can interact with it.
recursive accumulating backhitchless flush
(RABF)
A non-volatile caching technique that are
used by the 3592 tape drives.
rekey
In cryptography, the process of encrypting
a data key a second time by using the
public key of another party to create
another externally encrypted data key.
The cartridge can then be shipped to a
business partner that holds the
corresponding private key that allows the
data key to be unwrapped and the tape
can be decrypted on a different
encryption-capable 3592 tape drive.
relative humidity
The ratio of the amount of water vapor
present in the air to the greatest amount
possible at the same temperature.
remote authentication
The process of validating the user ID and
password that are supplied by a user for
a remote system to which the user
requires access. If the user is
authenticated, the user is mapped to a
principal.
remote support
See
Call Home
.
Remote Technical Assistance Information
Network (RETAIN)
Used by IBM Service Representatives, an
internal host-based software application
that contains records of service problems
with IBM hardware and software, and
tips on how to deal with the problems.
remove
Pertaining to the TS4500 tape library, a
term that is used to describe the act of
taking a tape cartridge out of an I/O
station.
repeater
A device that regenerates signals to
extend the range of transmission between
data stations or to interconnect two
branches. A repeater is a node of a local
area network.
RETAIN
See
Remote Technical Assistance Information
Network
.
RFID
See
radio frequency identification labels
.
robotics
The cartridge accessor and any associated
mechanisms that move a tape cartridge
within the TS3500 tape library.
RS-422 interface
An electrical interface standard that is
approved by the Electronic Industries
Association (EIA) for connecting serial
devices. The RS-422 standard, which
supports higher data rates and greater
immunity to electrical interference, is an
alternative to the older RS-232 interface
and uses individual differential signal
pairs for data transmission. Depending on
data transmission rates, RS-422 can be
used at distances to 1,275 m (4,000 ft). The
RS-422 interface also supports multi-point
connections.
S
SAN
See
Storage Area Network
.
SARS
See
Statistical Analysis and Reporting
System
.
SC1
Model SC1. See
Shuttle connection
.
scratch cartridge
A labeled cartridge that is blank or
contains no valid data, that is not
currently defined, and that is available for
use.
scratch encryption policy
A means of identifying to an
ecryption-enabled tape drive which
scratch cartridges will be encrypted on
the next attempt to write from the
beginning of the tape. A scratch
encryption policy specifies what scratch
cartridges to encrypt; it does not indicate
which cartridges are currently encrypted.
When used with library-managed
encryption, a policy optionally lets you
control cartridge encryption by VOLSER
ranges in all logical libraries.
SCSI
See
Small Computer Systems Interface
.
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