Date: Fri, 20 Jun 2008 10:28:36 -0300 From: "D G Teed" <donald.teed@gmail.com> To: "Brad Mettee" <bmettee@pchotshots.com> Cc: freebsd-questions@freebsd.org Subject: Re: clone a drive, no raid involved Message-ID: <dd4da0390806200628ge562aafm880fd44fc966aeea@mail.gmail.com> In-Reply-To: <4.3.2.7.2.20080619115705.02c0f750@mail.agoron.net> References: <4.3.2.7.2.20080619115705.02c0f750@mail.agoron.net>
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On Thu, Jun 19, 2008 at 1:08 PM, Brad Mettee <bmettee@pchotshots.com> wrote: > I'm setting up a pair of machines with almost identical OS config, and > completely identical hardware. One is a primary DNS server, the other is > secondary. NS1 will also serve web, NS2 will be a mail server. Both are low > volume/loads. > > It looks like I can use DD to copy an entire drive, but it's a 500G drive > and that's going to take a really long time (especially since it's brand new > with no data besides base OS). > > My question: Is there a better way to duplicate a drive including boot > info? You've got lots of useful answers on duplicating the system other ways, but I thought I'd mention that dd's performance can be enhanced by providing a blocksize. You might want to time some reads and writes with a set of numbers that divides evenly into the byte count of your disk. Years ago I found I could write a 40 GB laptop (4200RPM) disk in 21 minutes rather than one hour. --Donald
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