Specifications

AM-6060 Network Server AMB98-07 Page

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SCSI Devices—Support Considerations

Wide SCSI Configuration Guidelines

A Wide SCSI AM-6060 supports up to five internal SCSI devices, mounted inside the system

chassis. See “AM-6000 Chassis,” above, for mounting locations. Additional SCSI devices can be

installed outside the chassis. Configuration guidelines are as follows:

1. With a standard Wide SCSI AM-6060, the maximum length of external cabling, starting from

external SCSI connector on the chassis, is three feet (91 cm). In practice that usually means a

maximum of one external device.

2. Adding an AM-441-00 Wide SCSI Bus Repeater increases the maximum external cable length

to eight feet (243 cm). That amount of cabling will normally allow up to three external devices.

3. If the external devices include a mix of Wide SCSI and narrow SCSI, the narrow devices must

be grouped at the outboard end of the cabling, farthest from the chassis.

4. An external cable is standard with some devices and optional with others. We offer the cables

listed in Table 3. If you plan to supply your own cables, make sure they’re fabricated to SCSI-2

construction standards.

Points to keep in mind for particular devices are noted below.

AM-441-00 Wide SCSI Bus Repeater

The AM-441 is a booster that electronically extends the Wide SCSI bus. The AM-441 occupies one

5.25" peripheral device bay in the AM-6060 chassis. For further information see Marketing Bulletin

AMB98-04, New Wide SCSI Versatility—Shipping Now, January 23, 1998.

Portable CD-ROM Players

Many Alpha Micro VARs and developers use a portable CD-ROM player to load software at

customer sites. If you do, you’ll need a 68-pin cable to connect to a Wide SCSI AM-6060. Order a

PDB-00440-81 External SCSI cable (50-pin Centronics connector to 68-pin External SCSI, 3 ft) and

keep it with the CD-ROM player.

Do not use a cable longer than three feet unless the AM-6060

is equipped with an AM-441-00 Wide SCSI Bus Repeater.

RAID Disk Subsystem

The AM-6060 supports the AM-446 RAID Subsystem. The AM-446 is a Wide SCSI external

device. Accessory kits offered for the AM-446 include the appropriate external cable. The cable is

three feet long; equipment layout of the AM-6060 chassis and the RAID subsystem chassis should

be planned accordingly. For details see Marketing Bulletin AMB97-41, AM-446 RAID Subsystem

Announced, December 22, 1997.