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Term
Definition
F_port
A port in the Fibre Channel fabric where a N_port may attach
FL-port
A port in the Fibre Channel fabric where a NL_port may attach in an arbitrated
loop
hot swapping
Components are removed and replaced while the unit is running, with power to
either the component or a device connected to the unit. Not all components are
hot swappable: please read installation and maintenance instructions carefully.
initiator device
A component which originates a command
JBOD
Just a Bunch Of Disks: a storage subsystem using multiple independent disk
drives with or without RAID configuration.
LED
Light-emitting diode, a type of diode that emits light when current passes through
it. Visible LEDs are used as indicator lights on all sorts of electronic devices.
LUN
Logical Unit Number: a SCSI or Fibre Channel identifier of a device
NL port
a port attached to a node in Fibre Channel arbitrated loop or fabric loop
configurations
N_port
a port attached to a node used with point to point or fabric configurations
RAID
Originally Redundant Array of Inexpensive Disks, now Redundant Array of
Independent Drives: a storage system spanning multiple disk drives.
The following standard RAID specifications will be used here:
RAID 0: disk striping in which fixed-length sequences of data are mapped to
member disks in a regular rotating pattern.
RAID 1: Mirrored arrays: information written to one disk is also written to another
simultaneously. Also known as disk shadowing, real-time copy, and t1 copy.
RAID 10: Striped array with mirroring
SCSI
Small Computer Systems Interface: a processor-independent standard for
system-level interface between a computer and intelligent devices including hard
disks, floppy disks, CD-ROM, printers, scanners, etc.
topology
logical layout of the parts of a computer system or network and their
interconnections
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