On Tue, Mar 29, 2011 at 10:26:29AM -0400, Chris Hoogendyk wrote: > > > On 3/29/11 10:00 AM, Charles Curley wrote: > >On Tue, 29 Mar 2011 12:01:49 +0100 > >Chris Lee<[email protected]> wrote: > > > >>I was just thinking about my virtual tapes and the chances of a > >>failed sector or two going un-noticed until I needed to restore my > >>data. > >Modern hard drives handle bad sectors for you transparently. They swap > >in a spare sector, without notifying you. The only way you will see a > >report is if the hard drive runs out of spare sectors. If you see a bad > >sector report, you have worse problems than a bad backup. Go buy a > >replacement drive immediately. > > > >If you are concerned about the reliability of your hard drives, look > >into smartmontools. It uses the drive's firmware to test and collect > >data. Unfortunately sometimes the reports can be rather cryptic to the > >non-hard-drive-literate. > > Or go with ZFS on Solaris or FreeBSD or ... see > http://en.wikipedia.org/wiki/ZFS#Platforms. > > See http://www.zdnet.com/blog/storage/zfs-data-integrity-tested/811
I think BtrFS also checksums data and metadata. jon -- Jon H. LaBadie [email protected] JG Computing 12027 Creekbend Drive (703) 787-0884 Reston, VA 20194 (703) 787-0922 (fax)
