SCSI-2
A variation of the SCSI interface. See
Small Computer Systems Interface.
SCSI bus
(1) A collection of wires through which
data is transmitted from one part of a
computer to another.
(2) A generic term that refers to the
complete set of signals that define the
activity of the Small Computer Systems
Interface (SCSI).
SCSI address
See SCSI ID.
SCSI connector
One of the set of all female and male
connectors on the SCSI bus.
SCSI device
Anything that can connect into the SCSI
bus and actively participate in bus
activity.
SCSI element address
A value that defines a logical location in
the TS4500 tape library to the SCSI
interface. It is assigned by the library and
used by the server when the server
processes SCSI commands. The SCSI
element address is not unique to a storage
slot, drive, or I/O slot; it varies,
depending on the quantity of drives in
the library, whether the Capacity
Expansion feature is installed, and
whether an Expanded I/O Station is
included.
SCSI ID
The hexadecimal representation of the
unique address (0-F) that is assigned to a
SCSI device. This identifier would
normally be assigned and set in the SCSI
device during system installation.
search time
The average time that it takes for a tape
drive to locate the starting point of a
block of data.
secure sockets layer (SSL)
Protocol for transmitting private
documents by using the internet. SSL uses
a cryptographic system that uses two
keys to encrypt data - a public key that is
known to everyone and a private or secret
key that is known only to the recipient of
the message. Many web sites use the
protocol to obtain confidential user
information, such as credit card numbers.
By convention, URLs that require an SSL
connection start with https: instead of
http:.
sequential access
The processing of information on a tape
cartridge in a manner that requires the
device to access consecutive storage
locations (logical blocks) on the medium.
Sequential Access Device
In SCSI terms, a tape drive.
serial number
See volume serial number.
server A functional unit that provides services to
one or more clients over a network.
Examples include a file server, a print
server, and a mail server. The IBM System
p, IBM System i, HP, and Sun are servers.
Synonymous with host.
service clearance
Surrounding the TS4500 tape library, the
space that is required for an IBM Service
Representative to perform maintenance on
the unit.
service location protocol
(SLP) Protocol that provides a framework
to allow networking applications to
discover the existence, location, and
configuration of networked services in
enterprise networks. With SLP, the user
needs to know the description of the
service that he is interested in only. SLP is
then able to return the URL of the service
that the user wants.
service ratings
The values for criteria that is associated
with an electrical power cord. The criteria
include maximum voltage, current,
phases, and wires.
ship group
The group of supplies, cords, or
documentation that is shipped with the
TS4500 tape library.
shipping environment
The temperature, relative humidity rate,
and wet bulb temperature of the
environment to which the TS4500 tape
library is exposed when being transferred
from one location to another.
Glossary 185
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