Date: 07 Mar 2005 15:36:55 -0500 From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> To: freebsd-questions@freebsd.org Subject: Re: What's the easiest way to do a backup and verify? Message-ID: <44psybgplk.fsf@be-well.ilk.org> In-Reply-To: <1145660633.20050307160515@wanadoo.fr> References: <1946173739.20050307145644@wanadoo.fr> <200503071447.j27ElWW10343@clunix.cl.msu.edu> <1145660633.20050307160515@wanadoo.fr>
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Anthony Atkielski <atkielski.anthony@wanadoo.fr> writes: Anthony Atkielski <atkielski.anthony@wanadoo.fr> writes: > Jerry McAllister writes: > > > Actually, if used frequently for backups - such as every day, DAT is > > notoriously prone to failure. > > I've heard this for years, but I've never encountered it, on my own > systems or on any others. My drives are HP SureStore SCSI drives. > Currently I have BASF tapes, and they've gone through about 40 cycles. > I take backups every few days, or whenever there are large changes to > the data on the server (most of the time the only changes are log files > and things like that). > > > The only real thing you can do is to read back the tape and look > > for a couple of files with fairly high inode numbers for each file > > system dumped. If you can read them, you can assume the tape > > is readable. > > I'm surprised there isn't just some way of reading the tape and doing a > few simple sanity checks on the data (without comparing it to anything). > A drive or tape error would likely show on such checks. Listing the archive contents might be what you're looking for, then...
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