Selecting primary and backup systems, Creating the backup host environment – HP Integrity NonStop H-Series User Manual
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Configuring DSM/SCM
DSM/SCM User’s Guide — 529846-014
5 - 24
Configuring a Backup Host System
Selecting Primary and Backup Systems
Selecting which system to use as the primary host for this setup is the same as
selecting a host system in any environment. See
on page 4-2. Because your backup host needs to fully perform as the
primary if needed, consider the same guidelines in choosing it as for the primary host.
In setting up your backup system, check that it has:
Disk volumes associated with DSM/SCM (for the archive, files, and databases)
configured the same way as on the primary host. That is, these volumes need the
same primary and alternate volume names on both systems.
The same software revision as the primary host to avoid incompatibilities with
software products when the backup host becomes the primary host.
An Expand connection to all the target systems that the primary host is similarly
connected to, including REMOTEPASSWORDS. The TACL macros used to start
Expand between the primary host and the targets are copied from the primary host
to the backup host and are used by the backup host if it becomes the primary host.
User accounts and passwords for the planner, operators, and database
administrators identical to the primary host.
If the backup host system becomes the primary host system, it continues to serve as
the primary host for future DSM/SCM operations. Therefore, it should have sufficient
system resources to serve as such.
Creating the Backup Host Environment
To prepare your DSM/SCM environment for the possibility of your host system failing:
1. Gather this information about your primary and backup host systems:
Ethernet addresses:
>SCF
->INFO SUBNET $ZTC*.*
->EXIT
System name and number:
>SCF
->ASSUME SUBSYS $ZZKRN
->INFO
->EXIT
Remote passwords:
> REMOTES
Location of startup command (OBEY) file
Location of Expand startup macros