Guardian Application Conversion Guide

New File-Name Format
Conversion Concepts
096047 Tandem Computers Incorporated 2–9
A converted process on a D-series system can identify remote device names with eight
characters (seven characters after the dollar sign) on other D-series systems in a
network. A process on a C-series system can identify remote device names with a
maximum of six letters or digits after the dollar sign on other systems.
However, a process on a D-series system cannot identify a remote C-series volume
name that has seven characters after the dollar sign. For more information about the
compatibility of C-series and D-series device names, refer to Appendix C, “System
Compatibility.”
Table 2-2 shows a comparison of the programmatic representation of C-series and
D-series device names.
Table 2-2. C-Series and D-Series Programmatic Representation of I/O Device Names
Form C-Series Programmatic Representation D-Series Programmatic Representation
Device name (without a
specified node name)
1
name [0:3]
name [4:11]
= Device name
($ and 1 to 7 characters)
= Optional qualifier
[node-name.]name[.qualifier]
3
Network device name name [0].<0:7>
name [0].<8:15>
name [1:3]
name [4:11]
= ASCII "\"
= System number
= Device name
(1 - 6 characters)
2
= Optional qualifier
[node-name.]name[.qualifier]
3
1 The D-series operating system expands a partially qualified D-series file name using the current settings, including the node name,
from the =_DEFAULTS DEFINE VOLUME attribute. A device name that does not include a node name is therefore not necessarily a
local device name on a D-series system.
2 On C-series systems, a process can identify a remote device name with a maximum of six characters. A remote device name does
not include a dollar sign in the programmatic representation.
3 On D-series systems, a converted process can identify a remote device name with two to eight characters including the dollar sign on
other D-series systems but not on C-series systems.