I'm not crazy about using the built in Synology backup because it uses a propriatary format when it stores the data. Here is what I'm looking for:
- Cheapest backup possible
- 1 Remote backup and 1 local backup
- SHR-2 (RAID6) so I hopefully never have to use my backups in the first place.
- Local backup should be able to expand, automatically fix data rot, and if a hard drive fails, the power supply goes out, the mother board dies, etc, I can easily grab any of the hard drives, plug them in, and be able to access the files on that drive.
If using rsnapshot with snapraid, can I actually pull out a drive and plug it into a nother computer? rsnapshot uses hardlinks so if the files are stored on another drive the hard links won't work right?
https://www.digitalocean.com/community/tutorials/how-to-install-rsnapshot-on-ubuntu-12-04
2019- RAID 6 isn't enough http://www.zdnet.com/article/why-raid-6-stops-working-in-2019/
RAM to run snapraid :http://www.snapraid.it/faq#mem
More advice: http://www.snapraid.it/faq#guidelines
Instead of Snapraid use this: https://romanrm.net/mhddfs http://serverfault.com/questions/241659/do-you-lose-everything-when-you-have-a-hard-disk-failure-in-a-multi-hard-disk-lv/543684#543684
Look into checksum and data integrity libraries for scanning the backup server for data rot.
Setup this on backup server: https://www.howtoforge.com/checking-hard-disk-sanity-with-smartmontools-debian-ubuntu
https://www.digitalocean.com/community/tutorials/how-to-install-rsnapshot-on-ubuntu-12-04