Managing unix complexes

[Marcel Mol]

Today in many offices/datacenters the number of unix systems becomes
larger and larger. This doesn't make it easier to manage a unix
complex. Therefor I am looking for tools/packages that help operators
and system administrators to manage their unix systems.
For example packages that help in the area of:

	Problem management
	Change management
	User administration and Security
	Disk backup
	Migration/Recall of unused data to/from for example tapes
	Configuration management
	Performance and Capacity management
	Accounting

If you know packages, either coming with a particular unix flavor, or
just general available packages, please let me know about it.
If a package only works for specific unix systems please specify for which
systems.
Any suggestions are welcome.

-Marcel
-- 
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# Marcel J.E. Mol                       ######################################
# Delft University of Technology          Pink Elephant Management Services  #
# The Netherlands                         Voorburg                           #
# UUCP: marcel at duteca.et.tudelft.nl       Tel: 070-3694231                   #
#                                      	  (Tel prive: 070-3932390)           #
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