OpenVMS Cluster Systems - OpenVMS Systems - HP

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OpenVMS Cluster Interconnect Configurations 3.4 OpenVMS Cluster Systems Interconnected by LANs Option Comments Decreasing the LISTEN_TIME value allows the bridge to detect topology changes more quickly. Decreasing the FORWARDING_DELAY value can cause the bridge to forward packets unnecessarily to the other LAN segment. If you reduce the LISTEN_TIME parameter value, you should also decrease the value for the HELLO_ INTERVAL bridge parameter according to the bridgespecific guidelines. However, note that decreasing the value for the HELLO_INTERVAL parameter causes an increase in network traffic. Unnecessary forwarding can temporarily cause more traffic on both LAN segments until the bridge software determines which LAN address is on each side of the bridge. Note: If you change a parameter on one LAN bridge, you should change that parameter on all bridges to ensure that selection of a new root bridge does not change the value of the parameter. The actual parameter value the bridge uses is the value specified by the root bridge. 3.5 OpenVMS Cluster Systems Interconnected by MEMORY CHANNEL MEMORY CHANNEL is a high-performance cluster interconnect technology for PCI-based Alpha systems. With the benefits of very low latency, high bandwidth, and direct memory access, MEMORY CHANNEL complements and extends the ability of OpenVMS Clusters to work as a single, virtual system. MEMORY CHANNEL is used for node-to-node cluster communications only. You use it in combination with another interconnect, such as Fibre Channel, SCSI, CI, or DSSI, that is dedicated to storage traffic. 3.5.1 Design A node requires the following three hardware components to support a MEMORY CHANNEL connection: • PCI-to MEMORY CHANNEL adapter • Link cable (3 m or 10 feet long) • Port in a MEMORY CHANNEL hub (except for a two-node configuration in which the cable connects just two PCI adapters) 3.5.2 Examples Figure 3–6 shows a two-node MEMORY CHANNEL cluster with shared access to Fibre Channel storage and a LAN interconnect for failover. 3–10 OpenVMS Cluster Interconnect Configurations
OpenVMS Cluster Interconnect Configurations 3.5 OpenVMS Cluster Systems Interconnected by MEMORY CHANNEL Figure 3–6 Two-Node MEMORY CHANNEL OpenVMS Cluster Configuration LAN MC LAN MC MC LAN CPU CPU FC HSG VM-0669A-AI A three-node MEMORY CHANNEL cluster connected by a MEMORY CHANNEL hub and also by a LAN interconnect is shown in Figure 3–7. The three nodes share access to the Fibre Channel storage. The LAN interconnect enables failover if the MEMORY CHANNEL interconnect fails. Figure 3–7 Three-Node MEMORY CHANNEL OpenVMS Cluster Configuration CPU CPU CPU HSG LAN MC Hub FC VM-0670A-AI OpenVMS Cluster Interconnect Configurations 3–11
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OpenVMS Cluster Systems Order Numbe
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Contents Preface ..................
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4 The OpenVMS Cluster Operating Env
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6.5.4 Disk Rebuild Operation ......
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10 Maintaining an OpenVMS Cluster S
Page 11 and 12: D Sample Programs for LAN Control D
Page 13 and 14: G NISCA Transport Protocol Channel
Page 15 and 16: Tables 7-3 Clusterwide Generic Prin
Page 17: F-6 Channel Formation .............
Page 20 and 21: Appendix C provides troubleshooting
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Page 24 and 25: Introduction to OpenVMS Cluster Sys
Page 36 and 37: OpenVMS Cluster Concepts 2.1 OpenVM
Page 40 and 41: OpenVMS Cluster Concepts 2.3 Ensuri
Page 42 and 43: OpenVMS Cluster Concepts 2.3 Ensuri
Page 44 and 45: OpenVMS Cluster Concepts 2.4 State
Page 48 and 49: OpenVMS Cluster Concepts 2.6 Synchr
Page 50 and 51: OpenVMS Cluster Concepts 2.8 Disk A
Page 53 and 54: 3 OpenVMS Cluster Interconnect Conf
Page 55 and 56: OpenVMS Cluster Interconnect Config
Page 61: OpenVMS Cluster Interconnect Config
Page 67 and 68: 4 The OpenVMS Cluster Operating Env
Page 69 and 70: Table 4-1 Information Required to P
Page 71 and 72: Table 4-1 (Cont.) Information Requi
Page 73 and 74: Table 4-2 Installing Layered Produc
Page 75 and 76: The OpenVMS Cluster Operating Envir
Page 83 and 84: 5 Preparing a Shared Environment In
Page 85 and 86: Preparing a Shared Environment 5.2
Page 91 and 92: Table 5-2 Alias Collisions and Outc
Page 101 and 102: Table 5-3 (Cont.) Security Files Fi
Page 103 and 104: Table 5-3 (Cont.) Security Files Fi
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Cluster Storage Devices 6.2 Naming
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Cluster Storage Devices 6.3 MSCP an
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Cluster Storage Devices 6.4 MSCP I/
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Cluster Storage Devices 6.5 Managin
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Cluster Storage Devices 6.5 Managin
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Cluster Storage Devices 6.6 Shadowi
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7.1 Introduction 7 Setting Up and M
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Setting Up and Managing Cluster Que
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Figure 7-1 Sample Printer Configura
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Figure 7-2 Print Queue Configuratio
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Configuring an OpenVMS Cluster Syst
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9 Building Large OpenVMS Cluster Sy
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Building Large OpenVMS Cluster Syst
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Table 9-3 (Cont.) Checklist for Sat
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Table 9-8 (Cont.) Controlling Satel
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Table 9-8 (Cont.) Controlling Satel
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Potential Hot Files Methods to Help
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10 Maintaining an OpenVMS Cluster S
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Maintaining an OpenVMS Cluster Syst
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Example 10-1 Sample NETNODE_UPDATE.
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• CLUSTER_SHUTDOWN • REBOOT_CHE
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10.12 Restoring Cluster Quorum Main
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Command Purpose Maintaining an Open
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Cluster System Parameters A.1 Value
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Building Common Files B.1 Building
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C.1 Diagnosing Computer Failures C
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Table C-1 (Cont.) Sequence of Booti
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Step Action Cluster Troubleshooting
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Cluster Troubleshooting C.3 Satelli
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Table C-2 (Cont.) Alpha Booting Mes
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IF... THEN... The startup procedure
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Possible Bugcheck Causes Recommenda
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Cluster Troubleshooting C.10 Diagno
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Table C-5 Informational and Other E
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Entry Description Cluster Troublesh
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Table C-6 (Cont.) Port Messages for
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Table C-8 (Cont.) OPA0 Messages Har
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D Sample Programs for LAN Control S
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Sample Programs for LAN Control D.3
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Location Action Sample Programs for
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Subroutines for LAN Control E.2 Sta
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Subroutines for LAN Control E.3 Sto
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Subroutines for LAN Control E.4 Cre
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Subroutines for LAN Control E.5 Cre
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Subroutines for LAN Control E.7 Sto
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Troubleshooting the NISCA Protocol
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G NISCA Transport Protocol Channel
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NISCA Transport Protocol Channel Se
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NISCA Transport Protocol Channel Se
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A Access control lists See ACLs ACL
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CLUSTER_AUTHORIZE.DAT files (cont
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Disks system (cont’d) creating du
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HSZ subsystems, 1-4 I Installation
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MODPARAMS.DAT file (cont’d) examp
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Packets capturing data, F-26 maximu
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SAVE_FEEDBACK option, 10-10 SCA (Sy
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System parameters (cont’d) MPDEV_
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Voting members, 2-6 adding, 8-10, 8
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OpenVMS Cluster Systems - OpenVMS Systems - HP

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