Sun Microsystems SPARCserver 1000 manual Requirements for Using the SBus Adapter, Scsi Cabling

1

1.1 Requirements for Using the SBus Adapter

Before installing the adapter, make sure your system meets the following hardware and software requirements:

Systems	Sun™ Ultra™ 140, Sun Ultra Creator 170E,
	SPARCstation™ 4, SPARCstation 5, SPARCstation 10
	models, SPARCstation 20 models, SPARCserver™
	600MP series, SPARCserver 1000 or SPARCcenter™ 2000
Firmware	OpenBoot™ PROM Version 2.9 or greater
Operating System	Solaris™ 2.5 environment
Peripherals	Only Sun SCSI-2 devices
SCSI Cables	Only standard, Sun-supported cabling to ensure reliable
	SCSI interface connections
Part Numbers	530-2115-02 (1.2 m 50-pin to 68-pin cable)
	530-1884-03	(0.8 m 68-pin to 68-pin cable)
	530-2228-01	(2 m 50-pin to 68-pin cable)
	530-1885-03	(2 m 68-pin to 68-pin cable)

SCSI Cabling

You can daisy chain up to 15 devices on the SunSwift SBus Adapter as follows:

Wide-to-wide devices	Use a 68-pin to 68-pin cable.
	Always put wide SCSI devices closest to the host system.
Wide-to-narrow devices	Use a 68-pin to 50-pin cable.
	You can include only one wide-to-narrow cable along a
	chain of peripherals.
	Always put the narrow SCSI devices at the end of the
	chain.

The SCSI bus must be terminated at the end of the chain.

Note – If you use the SunSwift SBus Adapter for SCSI purposes only, you must change the device name from SUNW,hme to SUNW,hme_idle to avoid a “Link Down — cable problem?” message. Refer to SMCC Open Issues Supplement Solaris 2.5 for more detailed information.

1-2 SunSwift SBus Adapter Installation and User’s Guide—December 1995