On Sunday 08 April 2007 10:15, Lucio Crusca wrote: > Kern Sibbald wrote: > > > Interesting. Mind if I ask why? I need to back up close to 100 gigs. > > > Why not write that to media that holds ~4 gigs per piece instead of to > > > something that holds ~800 megs? > > > > They are not reliable. > > > > Modern tape drives (excluding Travan and DDS) i.e. DLT, LTO, .. are much > > more reliable, and from what I read they are more cost effective per GB. > > Do you have any pointer to reliability tests that prove what you say?
No, but I imagine it is easy to obtain on the Web. > I'm > planning some DVD backup systems and I'd like to know in advance what kind of > risk I'm facing when compared to DLT or LTO solutions. My comments come from my own experience of failures of DVDs to read in different drives (even the same drive), comments from users, and articles I have read. Ask a DVD manufacturer how long he will guarantee the data on a DVD. I suspect that there is *no* guarantee. If you ask a good tape manufacturer (HP), they will tell you 30 years. There are *lots* of small companies doing DVD backup because they think it is cheaper, but I don't think you find any serious company (or many anyway) doing so, and I am not convinced it is cheaper -- especially if you price out what a loss would cost. I've given you my opinion. You will need to do the research for yourself and make your own decision. A lot depends on each person's (company's) needs and situation. > > Besides the DVD jukebox, I'have another project for a small LAN: another DVD > backup system for a 20GB partition. The whole backup system needs to be > extremely cheap, so a single DVD writer will have to suffice. My idea is to > make a monthly full backup and a nightly incremental. During the daytime > monthly full backup, Bacula writes a DVD and then asks via email to manually > change the media: is this possibile at all with Bacula? (I guess yes, but I'm > new to Bacula, so I better ask in advance). > > Thanks, > Lucio. > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
