Compaq DS-DWZZH-05 Technical Update Download Page 1

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TruCluster Software Products

Hardware Configuration Technical Update for
DS-DWZZH-05 UltraSCSI Hub

December 1998

Product Version:

TruCluster Production Server
Software Software Version 1.4A and
TruCluster Production Server
Software Version 1.5 and TruCluster
Available Server Software 1.4A and
TruCluster Available Server Software
Version 1.5

Operating System and Version:

Compaq’s DIGITAL UNIX Version
4.0B and Compaq’s DIGITAL UNIX
Version 4.0D

This technical update describes how to configure the DS-DWZZH-05
UltraSCSI hub in a TruCluster Software Products environment.

Compaq Computer Corporation
Houston, Texas

Summary of Contents for DS-DWZZH-05

Page 1: ...roduction Server Software Version 1 5 and TruCluster Available Server Software 1 4A and TruCluster Available Server Software Version 1 5 Operating System and Version Compaq s DIGITAL UNIX Version 4 0B and Compaq s DIGITAL UNIX Version 4 0D This technical update describes how to configure the DS DWZZH 05 UltraSCSI hub in a TruCluster Software Products environment Compaq Computer Corporation Houston...

Page 2: ...Inc UNIX is a registered trademark in the United States and other countries licensed exclusively through X Open Company Ltd MEMORY CHANNEL is a trademark of Encore Computer Corporation Restricted Rights Use duplication or disclosure by the U S Government is subject to restrictions as set forth in subparagraph c 1 ii Compaq Computer Corporation makes no representations that the use of its products ...

Page 3: ... DWZZH 05 Indicators 2 6 2 7 Configuring a Cluster with a DS DWZZH 05 2 6 2 7 1 Installing the DS DWZZH 05 UltraSCSI Hub 2 7 2 7 2 Checking the Host Adapter and Cabling it to the Hub 2 7 2 7 3 Cabling the RAID array Storage Subsystem to the DS DWZZH 05 UltraSCSI Hub 2 8 2 7 3 1 Cabling an HSZ50 to a DS DWZZH 05 UltraSCSI Hub 2 8 2 7 3 2 Cabling an HSZ70 to a DS DWZZH 05 UltraSCSI Hub 2 10 Figures ...

Page 4: ...5 UltraSCSI Hub and an HSZ70 RAID Array Controller 2 11 Tables 2 1 DS DWZZH UltraSCSI Hub Maximum Configurations 2 2 2 2 Hardware Components Used in the Configuration Shown in Figure 2 3 2 10 2 3 Hardware Components Used in the Configuration Shown in Figure 2 4 2 12 iv Contents ...

Page 5: ...you plan to use a DS DWZZH 05 UltraSCSI hub in a TruCluster hardware configuration read this addendum to the TruCluster Software Products Hardware Configuration manual Organization This technical update contains an introductory chapter and a chapter covering the use and configuration of the DS DWZZH 05 UltraSCSI hub in a TruCluster configuration About This Technical Update v ...

Page 6: ......

Page 7: ...B and KZPBA CB host adpaters are supported for use with the DS DWZZH 05 UltraSCSI hub in TruCluster configurations with an HSZ50 or HSZ70 RAID array controller _______________________ Note _______________________ The KZPBA CB UltraSCSI host adapter is only supported on TruCluster Production Server Software Version 1 5 and TruCluster Available Server Software Version 1 5 with Compaq s DIGITAL UNIX ...

Page 8: ...roves the reliability of the detection of cable faults Provides for bus isolation of cluster systems while allowing the remaining connections to continue to operate Allows for more separation of systems and storage in a cluster configuration because each SCSI bus segment can be up to 25 meters in length This allows a total separation of nearly 50 meters between a system and the storage For more in...

Page 9: ...stems SCSI bus adapter Contains internal termination for each port therefore it terminates the hub end of each SCSI bus segment _____________________ Note _____________________ Do not put trilinks on the DS DWZZH 05 as it is not possible to remove the DS DWZZH 05 internal termination Requires that termination power termpwr be provided by the SCSI bus host adapters on each SCSI bus segment ________...

Page 10: ...A370 shelf only to provide its power and mechanical support it is not connected to the shelf internal SCSI bus Maximum configurations with combinations of DS DWZZH 03 see technical update TU DWZZH 03 and DS DWZZH 05 UltraSCSI hubs and disks in the same DS BA356 or BA356 storage shelf containing dual 180 watt power supplies are shown in Table 2 1 _______________________ Note _______________________...

Page 11: ...applies only to the member systems not to the storage controllers which are assigned higher priority than the member system host adapters You enable fair arbitration by placing the switch on the front of the DS DWZZH 05 UltraSCSI hub to the Fair position see Figure 2 1 Fair arbitration works as follows The DS DWZZH 05 UltraSCSI hub is assigned the highest SCSI ID which is 7 During the SCSI arbitra...

Page 12: ...________ If fair arbitration is enabled The SCSI ID of the host adapter must match the SCSI ID assigned to the hub port Mismatching or duplicating SCSI IDs will cause the hub to hang SCSI ID 7 is reserved for the DS DWZZH 05 whether fair arbitration is enabled or not Jumper W1 accessible from the rear of the DS DWZZH 05 see Figure 2 2 determines which addressing mode is used The jumper is installe...

Page 13: ...View Fair Disable Host Port SCSI ID 1 13 Host Port SCSI ID 3 15 Controller Port SCSI ID 6 4 6 0 Busy 0 2 ZK 1447U AI Host Port Host Port SCSI ID SCSI ID 14 Power 12 Using the DS DWZZH 05 UltraSCSI Hub in a Cluster Configuration 2 5 ...

Page 14: ...he UltraSCSI bus segment losing termination power is affected The remainder of the SCSI bus operates normally 2 6 DS DWZZH 05 Indicators The DS DWZZH 05 has two indicators on the front panel see Figure 2 1 The green LED indicates that power is applied to the hub The yellow LED indicates that the SCSI bus is busy 2 7 Configuring a Cluster with a DS DWZZH 05 The following sections discuss how to con...

Page 15: ... DWZZH 05 UltraSCSI hub is in the Fair position 3 Install the DW DWZZH 05 UltraSCSI hub in a DS BA356 BA356 if it has the required 180 watt power supply or BA370 storage shelf 2 7 2 Checking the Host Adapter and Cabling it to the Hub At the present time only the KZPSA BB and KZPBA CB host adpaters are supported for use with the DS DWZZH 05 UltraSCSI hub in TruCluster configurations with an HSZ50 o...

Page 16: ...tion is enabled or the SCSI ID assigned to the DS DWZZH 05 7 2 7 3 1 Cabling an HSZ50 to a DS DWZZH 05 UltraSCSI Hub To prepare the storage portion of a cluster using HSZ50 RAID Array controllers follow these steps while referring to Figure 2 3 and Table 2 2 1 Attach an H885 AA trilink connector to each HSZ50 controller on the SCSI bus segment 2 Attach an H879 AA terminator to the H885 AA trilink ...

Page 17: ...A BB 1 1 1 AlphaServer Member System 2 T KZPSA BB AlphaServer Member System 1 AlphaServer Member System 3 T KZPSA BB AlphaServer Member System 4 T 2 1 4 3 2 ZK 1449U AI _______________________ Note _______________________ The systems shown in Figure 2 3 use KZPSA BB SCSI adapters They could be KZPBA CB UltraSCSI adapters without changing any cables in the configuration Table 2 2 shows the componen...

Page 18: ... while referring to Figure 2 4 and Table 2 3 1 Install an H8861 AA trilink connector on each HSZ70 controller port on the SCSI bus segment 2 Attach an H8863 AA terminator to the H8861 AA connector on the HSZ70 controller that will be on the end of the SCSI bus segment 3 If there are two HSZ70 controllers connect the two H8861 AA trilink connectors on the controllers with a BN37A cable 4 Connect th...

Page 19: ...mber System 1 AlphaServer Member System 3 T KZPBA CB AlphaServer Member System 4 T 2 4 4 3 2 ZK 1460U AI _______________________ Note _______________________ The systems shown in Figure 2 4 use KZPBA CB UltraSCSI adapters They could be KZPSA BB SCSI adapters without changing any cables in the configuration Table 2 3 shows the components used to create the cluster shown in Figure 2 4 Using the DS D...

Page 20: ...63 AA VHDCI terminator 4 BN37A VHDCI cableb aThe maximum length of the SCSI bus segment including BN38C cable and internal device length must not exceed 25 meters bThe maximum length of the SCSI bus segment including the combined length of BN37A cables and internal device length must not exceed 25 meters 2 12 Using the DS DWZZH 05 UltraSCSI Hub in a Cluster Configuration ...

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