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>
>       here is my real world production example of users mail as well as documents.
> 
>
>       /dev/mirror/home1.eli      2788 1545  1243    55% 1941057 20981181    8%   /home
> 
> 
> Not the same data, I imagine.

A mix. 90% Mailboxes and user data (documents, pictures), rest are some 
.tar.gz backups.

At other places i have similar situation. one or more gmirror sets, 1-3TB 
each depends on drives.

For those who puts 1000 of mailboxes i recommend dovecot with mdbox 
storage backend


>  I was dealing with the actual byte counts ... that figure is going to 
be in whole blocks.
> 
>
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