SDIDIAG is provided as SDIDIAG.NLM for NetWare and SDIDIAG.EXE which can be run from Microsoft Windows against any other platform.
The page at the top shows: Restriction Status: Restricted but then at the bottom it says: Distribution Type: Public (So who knows)
There is also a RPM (sdidiag.x86_64.rpm) for Linux and sdidiag64.exe for Windows Server both require eDirectory binaries be installed on the local host.
SDIDiag is the Security Domain Infrastructure Diagnostic and repair utility. SDIDiag allows an administrator to view the various SDI Keys within a tree and to ensure that all servers are synchronized with constant keys.
By default SDIDiag 3.0 has been tested and works with eDirectory 9 and 8.8 SP8. For earlier versions of eDirectory and for 32-bit versions please find SDIdiag 2.2 also on the Patch site.
SDIDiag, Security Domain Infrastructure Diagnostic Utility Version 3.0 (Jan 29 2016) Copyright (C) 2003-2013 Novell, Inc. All rights reserved. Connect to IPv6 server? (y/n) n Server IPv4 Addr: 10.92.181.52:1524 Server NCP port: 524 <<== CAN NOT CHANGE PORT IGNORE User Name (Full DN): admin.novell -- User Name: admin.novell -- Server IP Address: 10.92.181.52 -- Server NCP port: 524 Press 'n' to fix input data - or any other key to continue