OpenVMS - Important Point to Remember



1.   System SCSnode name should not be more then 6 character.

2.    DECnet_area_number should be a number between 1 and 63.

3.    DECnet_node_number should be a number 1 and 1023.

4.    SCSSYSTEMID = (DECnet_area_number * 1024) + DECnet_node_number

5.   VAX : 32-bit computer system with CISC (Complex Instruction Set Computer) architecture and                     4  Gigabytes of virtual address space

6.   ALPHA : 64-bit computer system with RISC (Reduced Instruction Set Computer) architecture                             and  8 Terabytes of virtual address space

7.  SCSSYSTEMID holds the low order 32 bits and SCSSYSTEMIDH holds the high order 16 bits

8.  SCSSYSTEMID = ((DECnet area number) * 1024) + (DECnet node number)

9.  MAIN CLUSTER PROCESS

                         CACHE_SERVER *
                         CLUSTER_SERVER *
                         CONFIGURE
                         SMISERVER

10.  LEXICAL TO CHECK SYSTEM IS PART OF CLUSTER

        Sys$system:startup.com determines OpenVMS cluster membership using the lexical function             f$getsyi("cluster_member"). This returns a value of “True” if the node is a part of the cluster           and “False” if it not a cluster member

11.  CLUSTER COMPONENTS

                      CONNECTION MANAGER
                      DISTRIBUTED LOCK MANAGER
                      MSCP SERVER (only if serving disks) = Mass Storage Control Protocol
                      TMSCP SERVER (only if serving tapes) = Tape Mass Storage Control Protocol
                      DISTRIBUTED FILE SYSTEM
                      CLASS DRIVER
                      SYSTEM COMMUNICATION SERVICES (SCS)

12.  DIFFERENCE BETWEEN ODS-2 TO ODS-5

       In ODS-2 increase from 9.3 (nine-character filenames and three-character extensions) to 39.39           filenames at VAX/VMS V4.0.

Comments

Post a Comment

Popular posts from this blog

OpenVMS - Syslog Client for Installation & Configuration

OPC_SYSLOG Syslog Client for OpenVMS OPC_SYSLOG is used to read OpenVMS OPCOM messages and to transfer them to a SYSLOG server Installation OPC_SYSLOG is supplied as an OpenVMS kit and is installed with VMSINSTAL. The installation procedure asks for Device and Directory where OPC_SYSLOG should be installed. The rest of the installation is done automatically. So that OPC_SYSLOG is started automatically after a reboot of the OpenVMS machine, the OPC_SYSLOG startup command file OPC_SYSLOG_STARTUP.COM must either be entered in SYS $ MANAGER: SYSTARTUP_VMS.COM or in the SYSMAN data file. OPC_SYSLOG should be started as early as possible after a reboot. However, it must be ensured that TCPIP has already been started on the OpenVMS computer at this time. Starting and stopping OPC_SYSLOG The two command files OPC_SYSLOG_STARTUP.COM and OPC_SYSLOG_SHUTDWN.COM are used to start or stop OPC_SYSLOG Start OPC_SYSLOG To start OPC_SYSLOG, the startup co...
Read more

OpenVMS - How to enable Auditing for specific File

  1. First We need to enable Auditing with audit server for file access as shown below as bold. System security audits currently enabled for:   ACL   Authorization   Audit:         illformed   Breakin:       dialup,local,remote,network,detached   Logfailure:    batch,dialup,local,remote,network,subprocess,detached   FILE access:     Failure:     read,write,execute,delete,control If "FILE access" is NOT enabled, run below command to get it enabled. Command :    set audit/audit/enable=access=failure/class=file 2. Choose file for which you want to have file access auditing enabled. For Example :  File name :  DSA10:[TMP]REN.COM Firstly, check if  required ACL is defined for this file or NOT with below command  Command :  DIR/SECURITY UTIL:[TMP]REN.COM; Directory UTIL:[TMP] REN.COM;3                ...
Read more