Installation manual

Small Capacity System Disks
H.5 Managing Single or Small System Disk Systems
When your analysis is complete, you can free the pages to be used for paging once
again by entering the following command:
$ ANALYZE/CRASH/RELEASE SYS$SYSTEM:PAGEFILE.SYS
For more information about the system dump file, refer to the OpenVMS VAX
System Dump Analyzer Utility Manual.
H.5.3 Decompressing Libraries
The OpenVMS help libraries (as well as some programming
libraries) are distributed in a compressed format. You can use the
SYS$UPDATE:LIBDECOMP.COM procedure to decompress the libraries all
at once or individually. For a small system disk, it is almost never worth the
extra disk blocks consumed to decompress these libraries. The cost of leaving
them compressed is a longer access time when you use them.
If you frequently use help or an individual programming library, it might be
worthwhile to individually decompress those libraries. If you only infrequently
use help or do not mind the slower response time of the libraries in compressed
form, leave them compressed.
H.5.4 Disabling Log File Creation
Depending on your environment, there might be system jobs that create log files
of no concern to you or that contain more information than you need.
Unless you are a network manager or experiencing network problems, you
probably do not need to log network events. By not logging network events, you
can save disk space, a process slot, and some memory in the running system. To
disable network logging, enter the following commands:
$ MCR NCP PURGE KNOWN LOGGING ALL
$ MCR NCP CLEAR KNOWN LOGGING ALL
You need to enter these commands only once; they become permanent unless you
reset the DECnet logging information.
To reduce the logging information for other tasks (such as OPCOM, Accounting,
Security Auditing, Network Monitor Event Listener, and system-created batch log
files), you need to add some commands to your system-specific startup command
file, SYS$MANAGER:SYSTARTUP_VMS.COM (previously called SYSTARTUP_
V5.COM).
The following is an example SYSTARTUP_VMS.COM command file for a single-
user workstation:
H–8 Small Capacity System Disks