From owner-freebsd-questions@FreeBSD.ORG Wed Apr 8 12:24:31 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 77E191065673 for ; Wed, 8 Apr 2009 12:24:31 +0000 (UTC) (envelope-from freebsd-questions-local@be-well.ilk.org) Received: from mail2.sea5.speakeasy.net (mail2.sea5.speakeasy.net [69.17.117.4]) by mx1.freebsd.org (Postfix) with ESMTP id 4E9998FC1B for ; Wed, 8 Apr 2009 12:24:31 +0000 (UTC) (envelope-from freebsd-questions-local@be-well.ilk.org) Received: (qmail 16124 invoked from network); 8 Apr 2009 12:24:30 -0000 Received: from dsl092-078-145.bos1.dsl.speakeasy.net (HELO be-well.ilk.org) ([66.92.78.145]) (envelope-sender ) by mail2.sea5.speakeasy.net (qmail-ldap-1.03) with SMTP for ; 8 Apr 2009 12:24:30 -0000 Received: from lowell-desk.lan (lowell-desk.lan [172.30.250.6]) by be-well.ilk.org (Postfix) with ESMTP id 014285084A; Wed, 8 Apr 2009 08:24:23 -0400 (EDT) Received: by lowell-desk.lan (Postfix, from userid 1147) id 6DC8F1D5E9; Wed, 8 Apr 2009 08:24:23 -0400 (EDT) To: Steve Bertrand References: <49DBDE27.4010300@ibctech.ca> From: Lowell Gilbert Date: Wed, 08 Apr 2009 08:24:23 -0400 In-Reply-To: <49DBDE27.4010300@ibctech.ca> (Steve Bertrand's message of "Tue\, 07 Apr 2009 19\:13\:43 -0400") Message-ID: <44ocv7miyw.fsf@lowell-desk.lan> User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.3 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "freebsd-questions@freebsd.org Questions -" Subject: Re: Copying files without scp X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Apr 2009 12:24:31 -0000 Steve Bertrand writes: > To copy data from one server, I normally (always) use scp. > > I'm looking for a method to perform this copy task without the overhead > of encryption for infrequent, high-volume transfers (hundreds to > thousands of GB). > > The data will be transferred server-to-server within a private datacentre. > > Can someone recommend a *known good* production quality copy mechanism > that will act like scp, but without the overhead? rsh? nc? > > I recall a thread not too long ago regarding this, but I'd like to have > a simple working example if possible, without getting into detail why > one shouldn't transfer data unencrypted. I haven't hit a case in years where the encryption overhead was actually measurable as a significant issue. Still, anything you can do over ssh can be done just as well over rsh. There's always rcp if you want the same syntax as scp, but if the data consists of a lot of different files, using tar on both ends of a pipe will probably be much faster. -- Lowell Gilbert, embedded/networking software engineer, Boston area http://be-well.ilk.org/~lowell/