From owner-freebsd-hackers@FreeBSD.ORG  Fri Mar 27 08:45:33 2015
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To: d@delphij.net
Subject: Re: Seagate Archive HDD
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Cc: freebsd-hackers@freebsd.org, "O'Connor, Daniel" <darius@dons.net.au>
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to support this drives really efficiently you need

1) new filesystem - to use it as usual drive

2) replacement for rsync or other backup tools - to write new data 
sequentially when doing backups, and other tool to (from time to time) 
select data to be removed to free space, and reorganizing disk. Written 
data can have geom_uzip&cd9660 (or ffs) compatible layout to be readable 
by just anything.



I maybe would do some work on 2 as it will be my basic usage for it - 
incremental backup storage.