Re: [PLUG] Disaster Recovery Strategies

[Jeff Abrahamson <jeff@purple.com>]

Cool as long as you don't need to protect against a failure like "the
AC shuts down over the weekend."  Then both drives are toast.

-Jeff


On Thu, Sep 02, 2004 at 01:06:35PM -0400, Eric Hidle wrote:
>   [98 lines, 524 words, 3527 characters]  Top characters: _eitnalo
> 
> In that case, you might want to explore using kernel-based Raid-1
> mirroring, which can mirror two partitions so long as they are the
> same geometry. Of course, the O/S is still a single point of
> failure, but at least if a drive went out, all you'd have to do is
> make the surviving one disk0 and attach a new one, set up the
> partition, and let it rebuild the mirror... that'd certainly be
> cheaper :)
> 
> E
> 
> ----- Original Message ----- 
> From: "David Richardson" <dgr24@drexel.edu>
> To: <plug@lists.phillylinux.org>
> Sent: Thursday, September 02, 2004 12:39 PM
> Subject: Re: [PLUG] Disaster Recovery Strategies
> 
> 
> > That sounds nice, but I don't see a RAID-5 controller with a
> > hotswap chassis in my future. ;)
> >
> > I should have mentioned, the down time is not the issue.  It
> > doesn't matter if the machine is down for weeks.  I just don't
> > want to have to spend more time than is absolutely required to
> > bring the machine back up.
> >
> > Dave
> >
> > Eric Hidle wrote:
> > > What you really want is a Raid-5 controller with a hotswap
> > > chassis for your drives. 3Ware makes excellent hardware with
> > > linux source drivers as well.  It's expensive, but if you want
> > > true single-drive-failure-zero-downtime operation, it's the way
> > > to go, IMHO. Raid5 has saved my butt on more than one occasion.
> > > E
> > >
> > > ----- Original Message ----- 
> > > From: "David Richardson" <dgr24@drexel.edu>
> > > To: <plug@lists.phillylinux.org>
> > > Sent: Thursday, September 02, 2004 11:01 AM
> > > Subject: [PLUG] Disaster Recovery Strategies
> > >
> > >
> > >
> > >>I have a linux machine that I would like to be able to completely
> > >>restore to its current configuration in the event of a hard drive
> > >>failure.  I'd like to be able to just pop in a new hard drive, and have
> > >>it magically work like the old one without the need to manually install
> > >>or configure software.
> > >>
> > >>I was thinking about just using dd to copy the entire hard drive on the
> > >>currently working machine to a file and then if I ever need to put in a
> > >>new drive just using dd to write the contents of the old drive onto the
> > >>new drive.  Is it a problem if the new drive is a different size than
> > >>the old?  Or does anyone have a suggest of a better way?
> > >>
> > >>Thanks,
> > >>Dave

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