Hi! On Fri, Jan 04, 2008 at 02:47:11AM -0500, Nick Guenther wrote: >On 1/3/08, knitti <[EMAIL PROTECTED]> wrote: >> On 1/3/08, Marius Hooge <[EMAIL PROTECTED]> wrote:
>> > I personally don't recommend backups to CD/DVD. >> > They degenerate rather "quickly" depending on their quality and >> > the storage humidity. >> > Unlike a USB/Firewire harddisk inside your fire-, water-, emp-proof >> > safe/vault. ;-) >> > But make shure to set some kind of reminder to update your backup. >> this is becoming OT, but I can't recommend storing HDDs as "real" >> backup solution either. HDDs _do_ have bitrot, and one should at least, >> say, once a year, verify that the *whole* disk is readable, ensuring that >> sectors which are not yet completely unreadable get remapped. Vaulting >> a DVD or a HDD for five years or more leaves you in both cases with the >> real possibility of data loss. >How would you verify the whole disk is readable? dd if=/dev/... of=/dev/null; echo $? >And if it's all >readable, how do you ensure the data is still the same pattern you put >on before? Store checksums, e.g. mtree with appropriate options to store md5/sha1/sha256 along. Unlikely that bitrot keeps that correct. >-Nick Kind regards, Hannah.
