Hi, I just use HDDs. I make at least 2 copies of everything, and keep an index of what has been stored on each HDD. So I know what to redo if a disk fails. I then integrity check the disks every few years. After 5 years, I refresh the data. Add a new HDD, and transfer all the data over to it. This ensures that all the data has had at least one full write cycle every 5 years. I figure that no media will last forever, and thus ensure that no backups are older than 5 years. I also tend to add extra hash files to the backup, for example sha512sum of the files, so I can detect any bit-flips.
Kind Regards James On Tue, 6 Apr 2021 at 12:23, rmluglist2--- via Hampshire <hampshire@mailman.lug.org.uk> wrote: > > Hi all > > > > I’ll spare you all the detail but I need to backup 16Tb to some sort of > archive – i.e. unlikely to ever need it in a hurry. I know 16Tb is a lot > for a “home” situation but I can’t find anything reasonable. Can anyone tell > me if there’s an option I’m missing: > > > > I’ve looked at: > > * HDD (the cheapest and most fragile) > > * Tape (the dearest but prone to mechanical failure) and > > * Cloud (privacy issues and would mean an ongoing cost as well as a dreadful > time to upload (16Tb over a 16MBps upload is no joke – and would mean a lot > of checksums to make sure it was all ok once uploaded). > > > > What I need to know is if I’ve missed an “obvious” solution? Is SD card > reliable for long term storage. > > > > Cheers > > R > > -- > Please post to: Hampshire@mailman.lug.org.uk > Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire > LUG URL: http://www.hantslug.org.uk > -------------------------------------------------------------- -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --------------------------------------------------------------