1 Jun
2019
1 Jun
'19
7:29 a.m.
On 2019-05-31 23:56+0000, Hugo Mills wrote:
I started out writing CD-Rs about 15 years ago,
migrated to DVD+R,
and then to BD-R. I'm considering LTO-6 as the next migration, despite
the poor economics w.r.t. BR-R at my kind of scale.
What is the data integrity on optical media over ten or more years? I
have some CDs from 1990's era (silver) and starting to go mouldy. Many
of my writable CDs have lost their film, so useless for long term data
retention.
LTO on the other hand should span multiple decades without issue. If I
remember correctly, the tape should be forward compatible with drives
(not sure if there's a maximum number of iterations here, but I'd hope
not).
You could regularly export ZFS mirrors if you work spinny disks out to
be lower cost than LTO.
Remember to off-site one half of the mirror.
--
Best regards,
Ed http://www.s5h.net/