HP b1000 Terminators, Number of Devices Per Scsi Bus, Considerations for Selecting Scsi Devices

SCSI Connections

SCSI Restrictions

	Terminators
	The terminators for Ultra2 Wide Low-Voltage Differential SCSI (LVD
	SCSI) and Ultra Narrow Single-Ended SCSI (NSE SCSI) are different.
	The NSE SCSI terminator has 50 pins and will fit on a NSE SCSI
	connector. The LVD SCSI terminator has 68 pins and will fit on a LVD
	SCSI connector. Note that these SCSI terminators were shipped with
	your system.
CAUTION	It is necessary to put a terminator on unused SCSI connectors on the
	back panel of the system. However, if SCSI devices are attached to the
	bus via these connectors, the external device connected to the SCSI bus
	must be terminated with a SCSI terminator. If you do not already have
	the SCSI terminators, you must order terminator A1658-63012 (for the
	50-pin terminator; NSE SCSI) or A4986-63008 (for the 68-pin
	terminator; LVD SCSI) from Hewlett-Packard.

Number of Devices Per SCSI Bus

The number of SCSI devices per bus is limited (see Table 4-1). Before adding another SCSI device, determine if the system can support the additional device.

This workstation offers the following types of SCSI buses, each with their own configuration constraints:

• Ultra Narrow Single-Ended SCSI bus

• Ultra2 Wide Low-Voltage Differential SCSI bus

Considerations for Selecting SCSI Devices

SCSI devices supported by the Hewlett-Packard Company for the Ultra Narrow Single-Ended (NSE) and Ultra2 Wide Low-Voltage Differential (LVD) SCSI buses have been qualified as SCSI devices which meet NSE and LVD specifications. Contact your local HP sales representative for a current list of SCSI devices supported by HP for use on the Ultra Narrow Single-Ended and Ultra2 Wide Low-Voltage Differential SCSI buses.

If devices other than those supported by HP are connected to the Ultra Narrow Single-Ended or the Ultra2 Wide Low-Voltage Differential SCSI

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