Chapter 6. FICON attachment of IBM tapes 143
The smallest configuration has 24 Fibre Channel ports. The number of ports can be
increased to a maximum of 64 ports by adding 4-port modules, which are available in three
򐂰 Four shortwave ports for distances up to 500 m
򐂰 Four longwave ports for distances up to 10 km
򐂰 Three shortwave ports and one longwave port
You can intermix the modules in any combination.
The Director is housed in an IBM 2032-C36 (McDATA FC-512) cabinet, which can hold up to
four Directors.
IBM 2042-1 Director
The IBM 2042-1 is an INRANGE FC/9000 with 64 ports, upgradable to 128. It may act as a
FICON Director and as a Fibre Channel Director concurrently. The Director provides a wide
range of configuration options. A single I/O module provides eight Fibre Channel ports, with
each port capable of delivering up to 100 MB/sec, full-duplex data transfer. I/O modules are
available with:
򐂰 Eight shortwave ports
򐂰 Eight longwave ports
򐂰 Four shortwave ports and four longwave ports
The 6,400 MB/sec transmission bandwidth supports full nonblocking 64-port switch
Other configuration options include shortwave laser Gigabit Interface Convertors (GBIC)
(enabling a transmission distance of up to 500 meters) and longwave laser GBICs (enabling a
transmission distance of up to 10 kilometers) for a maximum of 64 GBICs. One or two
Directors can reside in a single cabinet, which supports up to 128 ports in a floor space of six
square feet.
The Director features redundant power supplies and cooling fans, along with redundant active
components that support automatic failover. Other high-availability capabilities include hot
swapping for all field-replaceable units, nondisruptive microcode updates, and automatic fault
detection and isolation.
In addition, call-home and e-mail capabilities automatically alert support and maintenance
personnel to accelerate problem resolution.
This Director supports direct FC-AL attachment using FL ports.
6.2.4 FICON control units
Control units may be attached by using direct fiber connection between the control unit and
FICON channel or through Directors, either FICON Directors or ESCON Directors with
FICON bridge cards. The use of Directors provides greater flexibility for configuration and
reconfiguration. The Directors also extend distance by redriving the optical signal. We have
already seen attachment using Directors. Figure 6-4 completes the configuration choices by
showing a direct, point-to-point connection between a FICON channel and a native FICON
control unit.

Get IBM Tape Solutions for Storage Area Networks and FICON now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.