Installation guide

DDR and the cam_data.c file have the same objectives. When compared to
the static method of providing SCSI device information, DDR minimizes the
amount of information that is supplied by the device driver or subsystem to
the operating system, and maximizes the amount of information that is
supplied by the device itself or by defaults specified in the DDR databases.
You can also use DDR capabilities to convert customizations in the
cam_data.c file to information in the DDR /etc/ddr.dbase text
database.
For more information about DDR, see System Administration,
ddr_config
(8), and ddr.dbase(4).
G.13.1 ULTRIX Migration Issues
Because dynamic device recognition does not exist on ULTRIX systems, it
does not affect migration. However, in a future release of DIGITAL UNIX,
the name space for SCSI devices will increase, and that change will affect
current versions of both operating systems.
G.14 Interfaces Retired from DIGITAL UNIX
With the release of DIGITAL UNIX Version 4.0, several features of
previous versions of the operating system were retired. The documentation
for previous versions of DIGITAL UNIX announced that these features
would be retired. The retired features and their ULTRIX migration issues
(if any) are:
• Support for ULTRIX RIS to DIGITAL UNIX client functionality
ULTRIX migration issues: If you have been using ULTRIX systems as
RIS servers for DIGITAL UNIX client systems, that capability will not
work for a DIGITAL UNIX Version 4.0 client. You will need to serve
DIGITAL UNIX Version 4.0 clients from DIGITAL UNIX RIS servers.
ULTRIX systems can still RIS serve ULTRIX client systems.
• The oawk version of the awk command
There are no migration issues because the owak command does not
exist in ULTRIX.
• Routines that were duplicated in thelibc and libm libraries have been
removed from the libc library.
ULTRIX migration issue: application developers might have to add the
-lm option to their compiler command line.
• The -n option from /usr/bin/echo and /bin/echo
There are no ULTRIX migration issues.
Migration from ULTRIX Version 4.5 to DIGITAL UNIX Version 4.0B G–25