OpenVMS Cluster Systems - OpenVMS Systems - HP

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OpenVMS Cluster Concepts 2.1 OpenVMS Cluster System Architecture Figure 2–1 OpenVMS Cluster System Architecture SPI Memory Channel MCdriver Clusterwide Services Message Service Connection Manager Memory Channel PMdriver 2.1.1 Port Layer RMS Lock Manager CI PNdriver Star Coupler 2–2 OpenVMS Cluster Concepts User Application DSA disk MSCP server File System DSA disk DUdriver System Communications Services SYS$SCS DSSI PIdriver DSA tape TMSCP server LAN PEdriver Ethernet (10/100, Gigabit) E*driver I/O Services DSA tape TUdriver SCSI disk DKdriver FC PG*driver FG*driver FDDI F*driver SCSI PK*driver FWD SE FC Switch SCSI tape MKdriver ATM ATM Switch User Applications Device Drivers Port Drivers Physical Device Drivers This lowest level of the architecture provides connections, in the form of communication ports and physical paths, between devices. The port layer can contain any of the following interconnects: VM-0161A-AI
OpenVMS Cluster Concepts 2.1 OpenVMS Cluster System Architecture • LANs ATM Ethernet (10/100 and Gigabit Ethernet) FDDI • CI • DSSI • MEMORY CHANNEL • SCSI • Fibre Channel Each interconnect is accessed by a port (also referred to as an adapter) that connects to the processor node. For example, the Fibre Channel interconnect is accessed by way of a Fibre Channel port. 2.1.2 SCS Layer The SCS layer provides basic connection management and communications services in the form of datagrams, messages, and block transfers over each logical path. Table 2–1 describes these services. Table 2–1 Communications Services Service Delivery Guarantees Usage Datagrams Information units of less than one packet Messages Information units of less than one packet Block data transfers Any contiguous data in a process virtual address space. There is no size limit except that imposed by the physical memory constraints of the host system. Delivery of datagrams is not guaranteed. Datagrams can be lost, duplicated, or delivered out of order. Messages are guaranteed to be delivered and to arrive in order. Virtual circuit sequence numbers are used on the individual packets. Delivery of block data is guaranteed. The sending and receiving ports and the port emulators cooperate in breaking the transfer into data packets and ensuring that all packets are correctly transmitted, received, and placed in the appropriate destination buffer. Block data transfers differ from messages in the size of the transfer. Status and information messages whose loss is not critical Applications that have their own reliability protocols (such as DECnet) Disk read and write requests Disk subsystems and disk servers to move data associated with disk read and write requests The SCS layer is implemented as a combination of hardware and software, or software only, depending upon the type of port. SCS manages connections in an OpenVMS Cluster and multiplexes messages between system applications over a common transport called a virtual circuit. A virtual circuit exists between each pair of SCS ports and a set of SCS connections that are multiplexed on that virtual circuit. OpenVMS Cluster Concepts 2–3
Page 1 and 2: OpenVMS Cluster Systems Order Numbe
Page 3 and 4: Contents Preface ..................
Page 5 and 6: 4 The OpenVMS Cluster Operating Env
Page 7 and 8: 6.5.4 Disk Rebuild Operation ......
Page 9 and 10: 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
Page 22 and 23: xxii bold text This typeface repres
Page 24 and 25: Introduction to OpenVMS Cluster Sys
Page 38 and 39: 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 46 and 47: OpenVMS Cluster Concepts 2.5 OpenVM
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 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
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Preparing a Shared Environment 5.3
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Table 5-2 Alias Collisions and Outc
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Table 5-3 (Cont.) Security Files Fi
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Table 5-3 (Cont.) Security Files Fi
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6 Cluster Storage Devices One of th
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Figure 6-1 Dual-Ported Disks Networ
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Figure 6-3 Configuration with Clust
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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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