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- To: misc_(_at_)_openbsd_(_dot_)_org
- Subject: Re: Backup
- From: Martin Schröder <martin_(_at_)_oneiros_(_dot_)_de>
- Date: Thu, 26 Sep 2002 23:39:40 +0200
- Mail-followup-to: misc_(_at_)_openbsd_(_dot_)_org
On 2002-09-26 09:05:46 -0700, Ben Goren wrote:
> On Wed, Sep 25, 2002 at 07:53:18PM +0200, Martin Schröder wrote:
> > On 2002-09-25 07:30:46 -0700, Ben Goren wrote:
> > > o The media must be separate from the read/write
> > > mechanism.
> > Huh? I can switch the hd off. I can't remove the platters
> > though. Is that a problem?
> You have two significant points of failure with most storage
> methods: the media and the mechanism. With a hard drive, if either
> one goes, the whole thing goes (unless you're handy with a
> scanning tunneling microscope). With tapes, if your mechanism
> goes, you've still got your data.
In both cases I need a data recovery service. I don't know: Are
their prices/GB very different for tapes and hds?
> A quick check of Pricewatch shows that DLT IV tapes are around $50
> each. 40 Gbyte Firewire drives start at $100 and average half
> again as much. I'm sorry, but I just lost you on the price
> argument, too.
You forgot the tape drive.
I only have prices in Euro for 80GB DLTs: drive is 1300, tapes are 80.
80GB Firewire hds cost around 200 (just the hd and the case,
> So, we have: 12 + (4 + 6) * 2 = 32 tapes per year. That's $1600
> for DLT, and $3200 for Firewire hard drives in their place. We
> haven't even touched on duplicates for offsite....
O.k. -- that's a real backup strategy.
> Me? At home? Again, I can't afford tapes, but I can afford to make
> regular copies on CD-R of important things. But I don't pretend
> that I'm actually doing backups.
I was talking about backups for soho, while you are talking
about backups for companies. If your data is really valuable, you
need tapes. But for Joe Average who has an 80GB++ drive and wants
to do some kind of backup, tapes are simply to expensive -- he
won't invest 1300 up front and then 2560 each year. For him CD-R
or DVD+/-R (and FW hds) will be enough.