DEC 4000 600 series, Руководство пользователя, Страница: 147 / 242

Identifying System Options
External
Mass Storage
Devices Your system can support devices that are outside the system
unit (external devices) in addition to the devices that are in
the system. External devices can sit or stand alone beside your
system, or they can be housed in a separate enclosure, such as
the R400X mass storage expander.
For a list of the devices that can be connected to your system,
refer to the Systems and Options Catalog, or contact your Digital
sales representative.
For information about how to connect an external mass storage
device to your system, refer to Connecting Additional Devices to
Your System, later in this chapter.
Network
Devices Depending on the configuration you selected, your system comes
with one or two Ethernet ports on the I/O module.
Each Ethernet port has two associated ports: thickwire
(standard Ethernet) and ThinWire. You select either thickwire
or ThinWire with a switch that is located halfway between
the thickwire and the ThinWire ports. You can connect to a
twisted-pair Ethernet by connecting a twisted-pair H3350 media
access unit to the thickwire port, using a standard transceiver
cable.
Identifying Mass Storage Devices
DSSI and SCSI
Devices Both DSSI and SCSI mass storage devices can be used in and
connected to your system. The devices in a single compartment,
however, are either SCSI devices or DSSI devices, depending on
the bus that runs through that compartment (see Table 6–1).
System Configuration 6–7