[SunHELP] Exabyte Mammoth2 Compression Problem

[Tom Jones]

I'm having a problem with compression on an M2
connected to a Enterprise E420R running Solaris 2.6

Recently, ufsdump is hitting EOT and requesting
a 2nd tape to be inserted.  The largest filesystem
is now over 65GB.  That filesystem contains users'
mailboxes so the files are primarily text files
(expecting good compression).

The native capacity of the M2 drive is 60GB so I
should not be hitting EOT at 65GB.

The st.conf setting is set to the Exabyte recommended
setting:

"EXABYTE Mammoth2", "Exabyte Mammoth2", "EXB-M2";
EXB-M2 = 1,0x35,0,0x1de39,1,0x28,0;

Has anyone seen this compression problem before?  Anyone
with different st.conf settings?

Thanks
Tom Jones