On Fri, May 25, 2007 at 10:41:18AM +0200, Johannes Wiedersich wrote: > Douglas Allan Tutty wrote: > > No. I figure a CD is good for at least a year. Every year, I > > pull the two netinst cds from the bank, take an SHA hash and compare it > > with the written notes, then run something like cdck on them. So far, > > my Woody CDs are fine. Funny enough, so is my woody floppy set (the > > whole shebang set of 20 floppies) on Maxell floppies; needed for my 486 > > that doesn't boot from CD or run an installer after woody's. > > Wow, you seem to have a lot of spare time. How long does it take you to > perform all these checks? >
My backup set isn't that large so only an hour or so. > I do backups to usb hard drives. They have 40GB to 120GB and it takes on > the order of 1 minute / GB to diff -r them. > So how often to you fsck -c the filesystem so that it attempts to read every block so that in turn the drive hardware can handle fading sectors? Hard drives on a shelf aren't maintenance-free either. > Considering lifetime and how often you're able to rewrite / reuse the > media, they are cheaper per GB than CDs/DVDs. > True. However, for a small data set (under 1 GB) the need for three copies means three hard drives. Using a hard drive and rewriting over it means that you loose old archives. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
