Specifications

AM-6060 Network Server AMB98-07 Page
________________________________________________________________________________
11
Table 2. Choice of SCSI Busses in the AM-6060 Network Server
Narrow SCSI Bus Wide SCSI Bus
Availability in the AM-6060
Standard in SBC-06060-00
AM-6060 Network Server
Standard
in SBC-06060-01
AM-6060 Network Server,
Wide SCSI
Optional upgrade
for
SBC-06060-00
Bus Width
One byte (8 bits + parity) Two bytes (16 bits + parity)
Bus Connectors
50-pin 68-pin
Maximum Transfer Rate
10 Mbytes/sec 20 Mbytes/sec
Max. Number of Connected Devices
7 total, including internal and
external devices
Internal
: 5 devices, maximum
External
: Depends on cable
length; up to 8 feet allowed
with AM-441 SCSI Repeater.
How Peripherals Connect to the Busses:
Devices with
50-pin
SCSI Connector
• SCSI-2 disks (“narrow disks”)
• Streamer tapes, 2GB or less
• DAT tapes
• Other standard SCSI-2 devices
These devices connect
directly to the SCSI bus, same
as in Roadrunner 030 and 040
systems, Eagles, and AM-4000
Each 50-pin device requires a
PDB-00440-91 Adapter to
connect to the Wide SCSI bus.
Devices with
68-pin
Wide SCSI Conn.
• Fast-Wide SCSI-2 or UltraSCSI disks
• 26GB ¼" streamer tape
Each device requires a
PDB-00440-90 Adapter to
connect to the SCSI bus.
Since these devices have a
68-pin data connector, they
connect directly to the 68-pin
Wide SCSI bus.
What happens when wide and narrow
disk drives are mixed in the same
system?
Wide SCSI disks are no faster
than narrow disks.
Wide SCSI performance
advantage is sacrificed. See text
on opposite page for
explanation.
External SCSI Connector
50-pin connector, same as in
Roadrunner 030 and 040
systems, Eagles, and AM-4000.
Installation kit includes 50-pin
SCSI terminator.
68-pin Wide SCSI external
connector. Installation kit
includes 68-pin Wide SCSI
Active Terminator.
Your Decision:
The AM-6060 Network Server is available with either bus style. We recommend the following for maximum
performance:
• Order the Wide SCSI configuration: SBC-06060-01.
• Order Wide SCSI disk drives (part number PDB-00440-XX).
• Order a PDB-00440-91 Adapter for each narrow SCSI device in the system.