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Chapter 4. Implementing the SAN Data Gateway 273
򐂰 Expand connectivity to storage devices with use of IBM SAN hubs, switches,
and directors
򐂰 Perform channel zoning and LUN masking capability to allow access at a
volume level
򐂰 Overcome the distance limitations of SCSI based host systems using
longwave ports that support distances up to 10 km
򐂰 Utilize the StorWatch SAN Data Gateway Specialist which is an easy to use
interface for managing and controlling access of host systems to storage
devices
The SAN Data Gateway is available as a rack-mount unit or as a stand-alone
tabletop unit. The gateway model provides two shortwave Fibre Channel ports
and four Ultra SCSI Differential ports to attach disk or tape storage devices. One
or two Fibre Channel cards dual-port, shortwave and/or single port, longwave
may be added for a maximum of six shortwave ports, or two shortwave and
two longwave ports. If you are using the dual-port shortwave cards, Figure 4-2
depicts the port assignment numbers for the optical interfaces.
Figure 4-2 SAN connection port assignment
4.2 Installation
Before any server or device connection is made to the SAN Data Gateway, you
need to power on the unit and connect a service terminal to the 9-pin Service
port located on the rear right-hand side of the unit. A PC running a terminal
emulation program, such as Windows HyperTerminal or NETTERM, can be
used. The settings of the Service port are:
򐂰 19200 baud
򐂰 8 data bits
򐂰 No parity
򐂰 1 stop bit
򐂰 X-on/X-off flow control
򐂰 VT-100 compatible terminal
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