Compaq AA-RHGWC-TE manual 1.2.1

2.6	SCSI Signal Converters	2–10
2.7	DS-DWZZH-03 and DS-DWZZH-05 UltraSCSI Hubs	2–11
2.8	SCSI Cables	2–12
2.9	SCSI Terminators and Trilink Connectors	2–14

3Shared SCSI Bus Requirements and Configurations Using UltraSCSI Hardware

3.1	Shared SCSI Bus Configuration Requirements	3–2
3.2	SCSI Bus Performance	3–3
3.2.1	SCSI Bus Versus SCSI Bus Segments	3–3
3.2.2	Transmission Methods	3–4
3.2.3	Data Path	3–5
3.2.4	Bus Speed	3–5
3.3	SCSI Bus Device Identification Numbers	3–5
3.4	SCSI Bus Length	3–6

3.5Terminating the Shared SCSI Bus When Using UltraSCSI

	Hubs	3–7
3.6	UltraSCSI Hubs	3–8

3.6.1Using a DWZZH UltraSCSI Hub in a Cluster

		Configuration	...........................................	3–8
3.6.1.1		DS-DWZZH-03 Description		3–9
3.6.1.2		DS-DWZZH-05 Description		3–10
3.6.1.2.1		DS-DWZZH-05 Configuration Guidelines		3–10
3.6.1.2.2		DS-DWZZH-05	Fair Arbitration	3–12
3.6.1.2.3		DS-DWZZH-05	Address Configurations	3–13
3.6.1.2.4		SCSI Bus Termination Power		3–15
3.6.1.2.5		DS-DWZZH-05	Indicators	3–15
3.6.1.3		Installing the DS-DWZZH-05 UltraSCSI Hub		3–15
3.7	Preparing the UltraSCSI Storage Configuration			3–16

3.7.1Configuring Radially Connected TruCluster Server

Clusters with UltraSCSI Hardware 3–17

3.7.1.1Preparing an HSZ70 or HSZ80 for a Shared SCSI Bus

Using Transparent Failover Mode 3–18

3.7.1.2Preparing a Dual-Redundant HSZ70 or HSZ80 for a

Shared SCSI Bus Using Multiple-Bus Failover 3–22

4TruCluster Server System Configuration Using UltraSCSI Hardware

4.1	Planning Your TruCluster Server Hardware Configuration ...	4–2
4.2	Obtaining the Firmware Release Notes	4–4
4.3	TruCluster Server Hardware Installation	4–5

iv Contents