Compaq AA-RHGWB-TE User Manual
Page 4
2.6
RAID Array Controller Restrictions . . .. . . .. . .. . .. . .. . . .. . .. . .. . .. .
2–7
2.7
SCSI Signal Converters . .. . . .. . .. . .. . .. . .. . . .. . .. . .. . .. . . .. . .. . .. . .. .
2–8
2.8
DS-DWZZH-03 and DS-DWZZH-05 UltraSCSI Hubs . . .. . .. . .. .
2–9
2.9
SCSI Cables . . .. . . .. . .. . .. . .. . . .. . .. . .. . .. . .. . . .. . .. . .. . .. . . .. . .. . .. . .. .
2–9
2.10
SCSI Terminators and Trilink Connectors . . .. . .. . .. . . .. . .. . .. . .. .
2–11
3
Shared 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 . . .. . .. . .. . . .. . .. . .. . .. .
3–4
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
3.5
Terminating the Shared SCSI Bus when Using UltraSCSI
Hubs . .. . .. . .. . .. . . .. . .. . .. . .. . . .. . .. . .. . .. . .. . . .. . .. . .. . .. . . .. . .. . .. . .. .
3–7
3.6
UltraSCSI Hubs . .. . .. . .. . .. . . .. . .. . .. . .. . .. . . .. . .. . .. . .. . . .. . .. . .. . .. .
3–8
3.6.1
Using a DWZZH UltraSCSI Hub in a Cluster
Configuration . . .. . .. . .. . . .. . .. . .. . .. . .. . . .. . .. . .. . .. . . .. . .. . .. . .. .
3–9
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
3.7.1
Configuring Radially Connected TruCluster Server
Clusters with UltraSCSI Hardware . . .. . .. . .. . .. . . .. . .. . .. . .. .
3–17
3.7.1.1
Preparing an HSZ70 or HSZ80 for a Shared SCSI Bus
Using Transparent Failover Mode . . .. . .. . .. . . .. . .. . .. . .. .
3–18
3.7.1.2
Preparing a Dual-Redundant HSZ70 or HSZ80 for a
Shared SCSI Bus Using Multiple-Bus Failover . . .. . .. .
3–22
4
TruCluster 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
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