Some people have worried that their 7-year archive tapes might only have a 5-year shelf life. It seems to me that reclamation would, over the years, do enough tape-to-tape copies to detect when a tape was going bad. Then you would presumably "move data" off the bad tape, discard it, and your archive would be safe on a good tape.
But with backupsets, there's no reclamation, so this wouldn't happen. A small concern IMHO. I just wanted to muddy the waters a bit. ;-} ---------------------------- Mr. Lindsay Morris CEO Applied System Design www.servergraph.com 859-253-8000 ofc 425-988-8478 fax > -----Original Message----- > From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of > Haskins, Mike > Sent: Wednesday, February 13, 2002 3:06 PM > To: [EMAIL PROTECTED] > Subject: Re: Backup Sets for Long Term Storage > > > Tom, your last comment is actually the reason I was considering backup > sets as a top contender for long term storage. Generate a backup set, > the owner signs for the tapes, and they're gone -- reserving library > space and volume ranges for data that is actively used or needed for DR. > > The inability to move a backup set to a new generation of media, as Bill > noted, is something I hadn't considered! > > Mike Haskins > Agway, Inc > > > -----Original Message----- > From: Kauffman, Tom [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, February 13, 2002 1:20 PM > To: [EMAIL PROTECTED] > Subject: Re: Backup Sets for Long Term Storage > > > Mike, if I were going to do this I'd use DLT based upon the > manufacturer's > propa\\\\\ documentation. > > OTOH, here's what I've done: > > 1) set up archive copygroups with retentions of 1 year through 7 years > (seven groups) all pointed to the same storage pool chain (disk and > tape). > 2) treat the storage just like everything else -- one copy on-site, and > a > copy pool for off-site. > > I run reclaims as required and otherwise exercise the LTO media once or > twice a month. > > If I were to do the backup set process, I'd make bloody sure that the > owner > of the data had the tapes AND HAD SIGNED FOR THEM so if they got lost or > damaged I wouldn't be in the loop. > > Tom Kauffman > NIBCO, Inc > > > -----Original Message----- > > From: Haskins, Mike [mailto:[EMAIL PROTECTED]] > > Sent: Tuesday, February 12, 2002 7:10 PM > > To: [EMAIL PROTECTED] > > Subject: Backup Sets for Long Term Storage > > > > > > Our TSM server has a 3494 library with 3590 tape drives. Now > > faced with > > meeting long term storage requirements (7+ years), I am looking at > > generating backup sets to accomplish this. Since backup sets can be > > used for stand-alone restores from a backup-archive client, I am > > thinking that a different media type would be better than > > 3590. There's > > not much chance that many of my nodes could have access to a > > 3590 drive. > > DLT or 8mm seem more appropriate. Any experiences or > > opinions would be > > appreciated. > > >
