HP 3000 Manuals HP 3000 Manuals
Migration from DS/3000 to
NS3000/XL and NS3000/XL Links
by Everett Thomas and Mike Genevro--Information Networks Division
This article discusses the migration from DS/3000 to NS3000/XL. For a
brief comparison of NS3000/V and NS3000/XL, see the article entitled
"NS3000/V to NS3000/XL and NS3000/XL Links."
Differences Between DS/3000 and NS3000/XL
DS is an acronym for Distributed Systems. NS is an acronym for Network
Services. Hewlett-Packard requires an NS3000/XL link product with
NS3000/XL.
A DS installation can consist of: 1) hardwired point-to-point links; 2)
point-to-point modem links on either dial-up or leased telephone lines;
3) X.25 network links; and 4) satellite network links. The maximum data
rate over a DS link is 56 kilobits-per-second.
An NS installation, on the other hand, is a local area network with a 10
megabit-per-second signaling rate. NS3000/XL cannot directly access a DS
link.
New Features
NS3000/XL provides the user and programmer with many features that are
not available in DS/3000. These new features are summarized here:
* Direct access to any node on the local area network (LAN).
* Direct access to remote files, devices, or databases.
* Configurable remote prompts.
* Redirection of node names coded into programs or job streams.
* Programmatic access of remote terminals by using Reverse VT.
* Network File Transfers (NFT) from any node on the LAN to any other
node on the LAN.
* Temporary remote logon for NFT transfers.
* DSCOPY options to move, replace, or overwrite files and to copy
privileged files.
* New and existing (DS) syntax is supported.
Missing Features
The following list specifies the features that were available in DS/3000
but are not available in NS3000/XL:
* The following DSLINE parameters are ignored: Linebuf=, Exclusive,
Phnum=, Locid=, Remid=, Select=, Fromaddr, Fromadr=, Toaddr=, Toadr=,
Queue, Noqueue.
* 3000 to 1000 or DEXEC calls are not supported.
* Wide-area network links are not available.
* Program-to-Program communication (PTOP) is not available. To
translate your PTOP applications to NetIPC and RPM, refer to the
NetIPC 3000/XL Programmer's Reference Manual (P/N 5958-8600).
Changed Features
The features that changed from DS/3000 to NS3000/XL are as follows:
* DSLINE ldev# (for DS device) is replaced by DSLINE envid or DSLINE
envnum.
* Some DSERR error codes changed.
* Remote Process Management is available on NS3000/XL.
Error Messages: DS/3000 to NS3000/XL
To learn about NS3000/XL error messages and recovery procedures, refer to
the NS3000/XL Error Message and Recovery Manual (P/N 36920-90004).
Conversion Check: DS/3000 to NS3000/XL
Identify applications using Program-to-Program Communications (PTOP).
Because NS3000/XL does not support this service, you must translate any
such applications so that they can run on an MPE XL-based machine. If
you wish to translate your PTOP applications, refer to Appendix B of the
NetIPC 3000/XL Programmer's Reference Manual (P/N 5958-8600).