Installation manual

Small Capacity System Disks
H.6 Managing Multiple Disk Systems
H.6.2 Copying Dump Files
At startup, you can enhance the use of the paging file as a dump file
that automatically copies the dump data for later analysis. This releases
the disk space in SYS$SYSTEM:PAGEFILE.SYS to be used for paging
automatically as well. Instead of manually invoking the System Dump
Analyzer (SDA) to release the pages, you can add the following commands to
the SYS$MANAGER:SYSTARTUP_VMS.COM file:
$ ANALYZE/CRASH SYS$SYSTEM:PAGEFILE.SYS
COPY alternate_disk:[dir]dumpname.ext
EXIT
Note
The dump file, whether it is SYSDUMP.DMP or PAGEFILE.SYS, must
reside on the system disk. This might limit the actual savings you can
achieve using alternate page files.
H.6.3 Offloading System Logs and Files
There are several system logs and files that can be redirected to another device.
For other system logs and files, it might be easier to reset and start a new log file,
copy the old file or files to another device, and purge them from the system disk.
Some files that can be redirected are the system authorization file, the queue
manager database, the audit log file, and batch log files. Some files that can
be reset, copied, and purged are the operator log file, the accounting log file,
and network log files. For more information about these facilities refer to the
OpenVMS System Manager’s Manual, the OpenVMS DCL Dictionary, or the
utility reference manual for the utility whose files you want to offload.
H.6.4 Offloading Nonessential Files
Some of the files included with OpenVMS VAX Version 7.3 can be redirected
to an alternate device during the installation or upgrade procedure. This can
save many valuable system disk blocks while providing quick access to these
files. For a small system disk configuration with multiple disks, this approach is
recommended if you want the Help Message database to be available on line.
H–10 Small Capacity System Disks