On Thu, Dec 25, 2008 at 01:04:07PM -0500, Justin Piszcz wrote: > Options/alternatives for maintaining data integrity? > > 1. Obviously DVD and/or LTO-tape (multiple copies of data at rest) > http://epoka.dk/media/Linear_Tape_Open_(LTO)_Ultrium_Data_Cartridges.pdf > -> For LTO-2/LTO-3 > -> Uncorrected bit error rate 1x10-17 1x10-17 > -> Undetected bit error rate 1x10-27 1x10-27 > > 2. ZFS, but only runs in user-space in Linux. > > 3. Keep an md5sum for each file on the filesystem and run daily > checks? I've recently started using par2[1][2] on backed up files. I just started doing this, so don't know how it will work in the long run. Can't hurt, anyway, other than taking up more space. [1] http://www.par2.net/ [2] http://parchive.sourceforge.net/ -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
