On Tue, Sep 13, 2011 at 3:48 PM, cephas maposah <mapo...@gmail.com> wrote:
> hello team
> i have an issue with my ZFS system, i have 5 file systems and i need to take
> a daily backup of these onto tape. how best do you think i should do these?
> the smallest filesystem is about 50GB

It depends.

You can backup the files (so it'd be the same whatever filesystem the
files was on), or you can backup the send/recv stream.

> here is what i have been doing i take snapshots of the 5 file systems, i zfs
> send these into a directory gzip the the files and then tar them onto tape.
> this takes a considerable amount of time.
> my question is there a faster and better way of doing this?

yes, that sucks as you need to write it to a temporary file first. Is
your tape a real tape or VTL? If it's VTL, it might be easier to just
use it as disk so you can directly write the compressed zfs stream
there without the need of temporary file first. Also, using lzop is
faster than gzip (and less compression), so you might want to try that
as well.

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