Installation guide

ASystem Limits
A.1 System Limits
This appendix lists the system limits for the major components of this
release. For hardware information specific to your individual processor, see
the Tru64 UNIX Software Product Description (SPD) and the Systems &
Options Catalog.
You may be able to increase some of the system limits by changing kernel
attribute values. Use the sysconfig command to display the current
attribute values, and the maximum and minimum values. For information on
how to modify attributes, see the System Administration manual and the
System Configuration and Tuning manual, which also includes lists of
tunable attributes.
The following sections describe the system limits.
A.1.1 Installation Requirements
A default installation of the Tru64 UNIX operating system requires at least
525 MB of disk space (for example, a RZ25 disk). This limit will change in
a future release (see Section 8.27 for more information). The disk space that
a custom installation requires depends on the optional subsets that you will
install. See Appendix B for information about subset sizes.
A.1.2 Memory Limits
The memory limits are as follows:
• Physical memory requirements
The minimum amount of physical memory that Tru64 UNIX requires is
64 MB.
The system platform limits the maximum amount of physical memory.
For more information on platform memory support, see the Systems &
Options Catalog.
• Virtual address space limit
The default amount of virtual address space available for each process is