archive database; --compress it but still readonly access to limited user;

hi, friends,
    We have a few database which stores archived data,  it become huge in
the past few years, as big as 100TB+.

    We have used compress table to reduce size for non-long/long raw tables
and it helps reduce size to 1/3-1/6 with proper sort during CTAS.  But 50%+
of the data are actually with LONG column. Two questions;
1. With 11g secure lob compression, anyone has experience with that? We can
consider upgrade to 11g if that really helps.
2. Any solution outside of database? Like at Host/SAN layer... We considered
ZFS (we are on Sun) and SAN team declined the idea.

Any comment/experience is welcome. Thanks.

-- 
Regards
Zhu Chao
www.cnoug.org

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