IBM TotalStorage DS4300 Turbo, Инструкция по установке, использованию и обслуживанию

Страница: 204 / 220

EXP. See storage expansion enclosure .
expansion port (E_port). A port that connects the
switches for two fabrics.
Extended Industry Standard Architecture (EISA). A
bus standard for IBM compatibles that extends the
Industry Standard Architecture (ISA) bus architecture to
32 bits and allows more than one central processing
unit (CPU) to share the bus. See also Industry Standard
Architecture .
fabric. A Fibre Channel entity which interconnects and
facilitates logins of N_ports attached to it. The fabric is
responsible for routing frames between source and
destination N_ports using address information in the
frame header. A fabric can be as simple as a
point-to-point channel between two N-ports, or as
complex as a frame-routing switch that provides multiple
and redundant internal pathways within the fabric
between F_ports.
fabric port (F_port). In a fabric, an access point for
connecting a user’s N_port. An F_port facilitates N_port
logins to the fabric from nodes connected to the fabric.
An F_port is addressable by the N_port connected to it.
See also fabric .
FAStT MSJ. See FAStT Management Suite Java .
FAStT Management Suite Java (FAStT MSJ). A
diagnostic and configuration utility that can be used on
Linux, Microsoft Windows, and Novell NetWare host
systems. In Linux, it is also used with the QLRemote
agent to define preferred and non-preferred paths for
logical drives.
FC. See fibre channel .
FC-AL. See arbitrated loop .
feature enable identifier. A unique identifier for the
storage subsystem, which is used in the process of
generating a premium feature key. See also premium
feature key .
fibre channel (FC). A set of standards for a serial
input/output (I/O) bus capable of transferring data
between two ports at up to 100 Mbps, with standards
proposals to go to higher speeds. FC supports
point-to-point, arbitrated loop, and switched topologies.
Fibre Channel-Arbitrated Loop (FC-AL). See
arbitrated loop .
Fibre Channel Protocol (FCP) for small computer
system interface (SCSI). A high-level fibre-channel
mapping layer (FC-4) that uses lower-level fibre-channel
(FC-PH) services to transmit SCSI commands, data,
and status information between a SCSI initiator and a
SCSI target across the FC link by using FC frame and
sequence formats.
field replaceable unit (FRU). An assembly that is
replaced in its entirety when any one of its components
fails. In some cases, a field replaceable unit might
contain other field replaceable units. Contrast with
customer replaceable unit (CRU) .
FlashCopy. A premium feature for DS4000 that can
make an instantaneous copy of the data in a volume.
F_port. See fabric port .
FRU. See field replaceable unit .
GBIC. See gigabit interface converter
gigabit interface converter (GBIC). A transceiver that
performs serial, optical-to-electrical, and
electrical-to-optical signal conversions for high-speed
networking. A GBIC can be hot swapped. See also
small form-factor pluggable .
Global Copy. Refers to a remote logical drive mirror
pair that is set up using asynchronous write mode
without the write consistency group option. This is also
referred to as
″
Asynchronous Mirroring without
Consistency Group.
″
Global Copy does not ensure that
write requests to multiple primary logical drives are
carried out in the same order on the secondary logical
drives as they are on the primary logical drives. If it is
critical that writes to the primary logical drives are
carried out in the same order in the appropriate
secondary logical drives, Global Mirroring should be
used instead of Global Copy. See also asynchronous
write mode , Global Mirroring , remote mirroring , Metro
Mirroring .
Global Mirroring. Refers to a remote logical drive
mirror pair that is set up using asynchronous write mode
with the write consistency group option. This is also
referred to as
″
Asynchronous Mirroring with Consistency
Group.
″
Global Mirroring ensures that write requests to
multiple primary logical drives are carried out in the
same order on the secondary logical drives as they are
on the primary logical drives, preventing data on the
secondary logical drives from becoming inconsistent
with the data on the primary logical drives. See also
asynchronous write mode , Global Copy , remote
mirroring , Metro Mirroring .
graphical user interface (GUI). A type of computer
interface that presents a visual metaphor of a real-world
scene, often of a desktop, by combining high-resolution
graphics, pointing devices, menu bars and other menus,
overlapping windows, icons, and the object-action
relationship.
GUI. See graphical user interface.
HBA. See host bus adapter .
hdisk. An AIX term representing a logical unit number
(LUN) on an array.
176
IBM TotalStorage DS4300 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide