IBM System Storage TS3500, Введение и руководство по планированию

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drives and 3592 tape drives to servers
which are separated by as much as 11
kilometers (7 miles). Fibre Channel
technology combines features of the
input/output (I/O) and networking
interfaces.
Fibre Channel address
For a tape drive that uses a Fibre Channel
interface, an identifier (such as an AL_PA
or Loop ID) that enables other device
ports to communicate with that drive.
Fibre Channel cable
The cable that connects a Fibre Channel
tape drive to another device. The
conductive element within the cable is
constructed of either copper wires or
optical fibers. Generally, copper wires are
used for short distances (up to 30 meters
or 98 feet); optical fibers are used for
longer distances. Fiber-optic cabling is
referred to by mode or the frequencies of
light waves that are carried by a
particular cable type. Multi-mode fiber
cables are generally used for distances up
to 500 meters (1640 feet) and with
short-wave (780 nanometer) laser light.
Single-mode fiber cables are used for
distances greater than 500 m (1640 feet)
and with long-wave (1300 nanometer)
laser light.
fiber optics
A branch of optics dealing with the
transmission of light through fibers or
thin rods of glass or some other
transparent material of high refractive
index.
FICON/ESCON-enabled products
Any of the IBM tape products equipped
with Fibre Channel (FICON) or Enterprise
System Connection (ESCON) interfaces to
allow attachment to the System z server
(mainframe host).
field replaceable unit (FRU)
Any piece of hardware that is complete,
contained, and manufactured or
assembled as a whole unit and can be
replaced in the field by a customer
engineer (CE).
file A named set of records stored or
processed as a unit.
file transfer protocol (FTP)
In the Internet suite of protocols, an
application layer protocol that uses TCP
and Telnet services to transfer bulk-data
files between machines or hosts.
firmware
Proprietary code that is usually delivered
as part of an operating system. Firmware
is more efficient than software loaded
from an alterable medium and is more
adaptable to change than pure hardware
circuitry. An example of firmware is the
Basic Input/Output System (BIOS) in
read-only memory (ROM) on a PC
motherboard.
floating home cell
The concept of actively managing
cartridge placement by picking an optimal
new home for cartridges being
demounted. HD libraries use a floating
home cell approach for the entire library.
frame In Fibre Channel technology, a unit of
transmission that includes delimiters,
control characters, information, and
checking characters.
See library frame .
frame control assembly (FCA)
The power structure for Models L22, D22,
L32, D32, L52, and D52. The assembly is a
group of parts that consists of a frame
control box (FCB), one or two 37 V power
supplies for the cartridge accessor,
operator panel, and I/O stations, and an
MCC card pack that runs the firmware
that controls the ac and dc power
distribution in the . The assembly also
provides an RS-422 communication port
to each tape drive in a frame. The FCB
contains 3 circuit protectors, 10 ac outlets
for powering the tape drives and all other
components in that frame, and a
receptacle for the incoming main ac
power.
front door
Located at the front of each frame in the
TS3500 Tape Library, the swinging barrier
by which entry is closed or opened to the
frame.
FRU See field replaceable unit .
FTP See file transfer protocol .
FTP site
Any electronic repository of information
that uses the File Transfer Protocol (FTP)
Glossary
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