> I see that LTO 6 holds 2.5T data per tape, or 6.25T compressed.

The 6.25TB is only an estimate. If you have non compressible data you
will get close to 2.5 TB of space on your tape. If you have all text
files you may fit 15 TB on a single tape..

> I've never used HW compression before so am wondering whether its
> performance is variable like SW compression.   i.e. depends on the
> file contents just what kind of compression ratio you'll get.
>
> And also how reliable is it?   If it is just as reliable why would
> someone choose not to use it (and therefore why is there an option to
> not use it)?
>

HW compression is 100% reliable. Just leave compression on at the HW
level and make sure you have software compression off. HW compression
will not slow down your backups and it will not reduce your tape if
you have non compressible data.

John

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