Date: Mon, 26 Jun 2006 11:09:33 +0100 From: Alex Zbyslaw <xfb52@dial.pipex.com> To: Nikolas Britton <nikolas.britton@gmail.com> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: help with 'tar|rsh tar' Message-ID: <449FB25D.9090301@dial.pipex.com> In-Reply-To: <ef10de9a0606231834w4e286e90u4027ff6f0835131c@mail.gmail.com> References: <ef10de9a0606231834w4e286e90u4027ff6f0835131c@mail.gmail.com>
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Nikolas Britton wrote:
> I need to backup the /data directory on hostA to /data on hostB, about
> 1TB of data on a gigabit link. Right now I'm using scp but the
> handshake latency and ssh overhead is killing me.
>
Try openssh-portable from ports and set these two:
HPN "Enable HPN-11 SSH/SCP patch" off \
HPN_NONECIPHER "Enable HPN-11 with None Cipher patch"
off \
Then use "scp -z" to do the copy. You need this version of ssh at both
ends for -z (no data encryption) to work. HPN improves the performance
of ssh no end on internal gigabits. No idea if it will match the ttcp
solution, but much safer than enabling rsh :-)
--Alex
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