SN0054669-00 C Glossary-3
User’s Guide—QConvergeConsole
2400, 2500, 3200, 8100, 8200 Series
port instance
The number of the port in the system.
Each adapter may have one or multiple
ports, identified with regard to the adapter
as port 0, port 1 and so forth. To avoid
confusion when dealing with a system
containing numerous ports, each port is
assigned a port instance number when the
system boots up. So Port 0 on an adapter
might have a port instance number of 8, for
example, if it is the eighth port discovered
by the system.
RAID
Redundant array of independent/inexpen-
sive disks. RAID are fault-tolerant disks
that look like either single or multiple
volumes to the server.
RAM
Random-access memory. The most
common computer memory that can be
used by programs to perform necessary
tasks while the computer is on; an
integrated circuit memory chip. RAM
allows information to be stored or
accessed in any order (randomly), and all
storage locations are equally accessible.
random-access memory
See RAM.
redundant array of
independent/inexpensive disks
See RAID.
SAN
Storage area network. Multiple storage
units (disk drives) and servers connected
by networking topology.
SCSI
Small computer system interface. A
high-speed interface used to connect
devices, such as hard drives, CD drives,
printers, and scanners, to a computer. The
SCSI can connect many devices using a
single controller. Each device is accessed
by an individual identification number on
the SCSI controller bus.
secure sockets layer
See SSL.
SSL
Secure sockets layer. A cryptographic
protocol that provides communications
security over the Internet.
storage area network
See SAN.
target
The storage-device endpoint of a SCSI
session. Initiators request data from
targets. Targets are typically disk-drives,
tape-drives, or other media devices.
Typically a SCSI peripheral device is the
target but an adapter may, in some cases,
be a target. A target can contain many
LUNs.
A target is a device that responds to a
requested by an initiator (the host system).
Peripherals are targets, but for some
commands (for example, a SCSI COPY
command), the peripheral may act as an
initiator.
TCP
Transmission control protocol. A set of
rules to send data in packets over the
Internet protocol.
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