[SunHELP] Best way to archive ?

[Sreenivasa Rao Vadalasetty]

I have a disk partition having the following directory structure 

/dir/subdir1/*files*
/dir/subdir2/*files*

I need to archive the above directory structure onto a tape whenever the
partition becomes full.  I mean that I will delete the data on this
partition once it is archived onto tape. When the same parition with the
same directory structure becomes full, I want to update the previous tape
with this latest data on this disk. And in future, I should be able to
selectively restore only one of the files in one of the sub directories.

Please suggest me an efficient way of doing this.  I was thinking to use
ufsdump/ufsrestore or tar... but not clear how to make use of  ufsdump for
this purpose. 

Please let me know if you need more information to suggest a better
soultion.

Sreenivas.