> I'm trying to find out what the best way is to archive and backup
> prepress-datafiles. I want to hear from some people the good and bad
> things that happened to them. Anybody archived their precious data to
> CDROM and later discovered that the data was unreadable after a year or
> so? Or did you archive to optical discs and the optical disks were
> unreadable when you really needed the data? Or what happened to your
> DAT-tapes, DVD or any other mass-storage? Anybody heard of the new Sony
> AIT-3 Tape drives with a storage of 100 Gb uncompressed (1:1) and 260 Gb
> compressed (2.6:1). It can backup a whopping 90 Gb. in approx. 1 hour...
> Is it a smart thing to buy such a device or stay with the good old
> -ahum- cdrom or DAT's???
I run tape to keep a consistent backup each night and keep an awful lot
of work up on the server, and also archive all finished jobs to CD-R
every month. I have had problems (though not many) with optical and
CD-R media going bad over time (usually after 4-5 years), so we write
two copies of everything.
I've lost data on DAT drives before. We had a major server crash in May
of '97 with totally unrecoverable hard disks, and most of my tapes were
NG. If we hadn't also had optical archives we would have lost half of
our old work, instead of just the couple weeks that hadn't yet been
archived, and a some jobs here and there on opticals that had trouble.
For a long time, I just bagged the tape backup and made sure we had
duplicate copies of anything that hadn't been burned. Then a year or
two ago, at the recommendation of people on the ASIP list, I replaced
those DAT drives with an AIT. I've never yet lost a verified backup on
the AIT. OTOH, I've had trouble getting my AIT drive to write
consistently, so I'm getting more religious about burning CD-Rs and
keeping backups of unburned stuff on individual workstations. I think I
need a new backup server (SCSI problems), but I haven't done all the
necessary troubleshooting to really know.
Anyway, I'd say no backup medium is perfect. If you really can't afford
to lose anything, make two copies. In generally, I've been happy with
CD-R, though you end up with a lot of disks that way.
Business Card Express of CT Thermographers to the Trade