Cabling An Hsz20 In A Cluster Using External Termination; Externally Terminated Shared Scsi Bus With Hsz50 Raid; Array Controllers At Bus End; Figure 8–12 And Figure 8–13 - Compaq TruCluster Server AA-RHGWB-TE Manual

Figure 9–13: Externally Terminated Shared SCSI Bus with HSZ50 RAID

Array Controllers at Bus End

Member
System
1
Memory Channel
KZPSA-BB (ID 6)
T
1
2
Table 9–3 shows the components used to create the cluster shown in
Figure 9–12 and Figure 9–13.
Table 9–3: Hardware Components Used for Configuration Shown in Figure
8–12 and Figure 8–13
Callout Number
1
2
3
4
a The maximum combined length of the BN21K (or BN21L) cables must not exceed 25 meters.
b The cable between the H885-AA trilink connectors on the HSZ50s could be a BN21L-0B, a 0.15-meter cable.

9.4.3.2 Cabling an HSZ20 in a Cluster using External Termination

To connect a SWXRA-Z1 (HSZ20 controller) to a shared SCSI bus, follow
these steps:
1. Referring to the RAID Array 310 Deskside Subsystem (SWXRA-ZX)
Hardware User's Guide, open the SWXRA-Z1 cabinet, locate the SCSI
bus converter board, and:
• Remove the five differential terminator resistor SIPs.
Network
Memory
Channel
Interface
3
4 3 4
T
2
HSZ50 HSZ50
Controller A Controller B
Description
BN21W-0B Y cable
H879-AA terminator
BN21K (or BN21L) cable
H885-AA trilink connector
Configurations Using External Termination or Radial Connections to
Member
System
2
Memory Channel
KZPSA-BB (ID 7)
1
3
ZK-1597U-AI
a b
Non-UltraSCSI Devices 9–27