> Currently I have a LTO3 magazine with HW compression on. From a theoretical 
> max storage of 400GB, sometimes it gets very good compression rates, and 
> manages to fit near 700GB

I have an LTO2 tape that is used only for a specific dataset that is
very compressible. Currently I it has 3TB on a single LTO2 tape.

*list media pool=LTO2-Calculated-Data
+---------+------------+-----------+---------+-------------------+----------+--------------+---------+------+-----------+-----------+---------------------+
| mediaid | volumename | volstatus | enabled | volbytes          |
volfiles | volretention | recycle | slot | inchanger | mediatype |
lastwritten         |
+---------+------------+-----------+---------+-------------------+----------+--------------+---------+------+-----------+-----------+---------------------+
|     212 | A00053     | Append    |       1 | 3,006,834,453,504 |
3,025 |   31,536,000 |       1 |   14 |         1 | LTO-2     |
2013-05-03 09:59:36 |
+---------+------------+-----------+---------+-------------------+----------+--------------+---------+------+-----------+-----------+---------------------+


With that said outside of the few edge cases most of my 180 LTO2 tapes
fit around 300 GB which is less than the claim of 400GB.

John

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