Subject: Re: Suggestions for a backup solution
To: Jukka Marin <firstname.lastname@example.org>
From: Steven M. Bellovin <email@example.com>
Date: 01/02/2002 14:52:22
In message <20020102214207.A10737@pyy.jmp.fi>, Jukka Marin writes:
>On Wed, Jan 02, 2002 at 02:01:31PM -0500, Ian P. Thomas wrote:
>> I'm about to purchase some sort of backup solution. I would
>> like to know what a good solution for a home PC would be. 100 MB Zip
>> disks seem to small. What I would like to do is back up the whole disk
>> to some media on a weekly basis, or more frequently. Is a tape drive the
>> best route to go for this? If so, I'm assuming that SCSI drives would be
>> best. What brands run best on NetBSD? I know where to look for supported
>> hardware, but some drivers work better than others.
>Why not buy an extra disk and automatically create tarballs to it?
>Maybe doing a tape backup once a week or month in addition to this.
>I have found DAT drives working well - but the tapes are quite small,
>compared to disks available now.
That's the real problem: disks have gotten really big. I back up my
laptop's 20G NetBSD partition to a desktop with a 75G drive. My office
desktop has two big drives; I use one to hold backups of the other,
plus "off-site" backups of my laptop. But I don't find these solutions
to be completely satisfactory, because I want something that is (a)
more easily moved to offsite locations, and (b) more immune to the
vagaries of host software and hardware. (Case in point: I just posted
a report of a hardware problem on my office machine. At the time, I
thought it was a controller problem, though I'm now inclined to think
it's the drive. But -- even though the second drive checks out clean,
I'm reluctant to mount it in case there is a controller glitch. I
don't dare touch it -- it's my clean backup. But what good is a backup
you can't use?)
--Steve Bellovin, http://www.research.att.com/~smb
Full text of "Firewalls" book now at http://www.wilyhacker.com