Incremental dumps using cpio

[weber at nadc.arpa]

We recently installed Sys-V, release 2 and would like to use the cpio
command to do daily incremental dumps.  AT&T has hinted that cpio
should be used but doesn't want to give out any more info without a
service contract in place.

We like the dump utility on Berkely 4.1 and would like something
comparable.  Is this possible?   Has anyone already done this?
Any info would be greatly appreciated.

Please mail any responses directly to me.  Many thanks.

					    Jane M. Weber
					    weber at NADC.ARPA