Installation guide

1.3 ULTRIX Features Unavailable on DIGITAL UNIX
Systems
The DIGITAL UNIX system provides many ULTRIX features, but it omits
some ULTRIX features. The following list shows features that are available
on ULTRIX systems but not on DIGITAL UNIX systems:
• Support for VAX hardware
• Support for the MIPS RISC hardware
• Support for most terminals or printers not manufactured by DIGITAL
• N-buffered I/O services
• Diskless Management Services (DMS) (although there is some support
for a dataless environment in DIGITAL UNIX systems)
• DECwindows debugger, dxdb (although the DEC FUSE programming
environment is supported)
• Hesiod software (although BIND software is supported)
• Kerberos software (see Section 6.9.2)
• The DIGITAL Remote Procedure Calling package, DEC RPC (see
Section 6.9.1)
• Extended SNMP features
• ULTRIX disk partitioning ioctl functions
• XUI graphical user interface (GUI)
1.4 Migrating from ULTRIX to DIGITAL UNIX Systems
Migrating from an ULTRIX system to a DIGITAL UNIX system involves:
• Migrating a user from an ULTRIX to a DIGITAL UNIX system
• Migrating an ULTRIX system and network management environment
to a DIGITAL UNIX system
• Migrating an application from an ULTRIX to a DIGITAL UNIX system
You might be involved in one or more of these types of migration.
This section gives a brief overview of the three migration paths, including
brief descriptions of the issues involved in migration.
1.4.1 Migrating as a User
As a user of the DIGITAL UNIX system, you will notice few differences
between the DIGITAL UNIX system and the ULTRIX system. Most
Introduction to Migrating from ULTRIX to DIGITAL UNIX Systems 1–9