> Are you really buying an extra 2 TB's of storage to archive 1 TB of data ...
$ sudo zpool get size zdata
NAME PROPERTY VALUE SOURCE
zdata size 21.8T -
Yep.
It's fine that you "feel secure" with your current backup regimen -- and I certainly hope you never lose any important data.
After losing data once, though, I promised myself I'd do my best to make sure that it never happened again. The "primary copy" of all my data lives on the individual machines (my workstation, primarily, but there's a bit on my main laptop too) but there's also a copy of it all on a server out in the garage as well as yet another server (see above) that I have in an ISP's facility nearby. There's yet another copy of a small fraction of my files (the "really, really, really important stuff") that's sitting in AWS (via tarsnap) as well.
Some folks are satisfied with a copy of their family photos copied onto a flash drive and tossed into a drawer or an external USB drive permanently sitting on the desk next to their computer. I know of several small companies in my area that thought they were safe with an external USB drive connected to their server... until they got hit with ransomware.
My laptop has a pair of mirrored SSDs, my workstation has a pair of mirrored SSDs and a pair of mirrored "spinners". The server in the garage (my "first backup") has RAID10. That box at the ISP has mirrored SSDs plus a "raidz2" that the backups live on. Some of us just want a little bit more reassurance than others. :-)
> Some of us just want a little bit more reassurance than others
Which gets back to the original point. If you use format that can be more easily recovered, then having the same amount of copies, you're data is more secure.
You've probably been downvoted because it's perceived as showing off, but it is a nice setup.
I've also spend more time than I'm willing to admit with planning researching configuring and maintaining different backup strategies, and just wanted to say that I regret some of that. It's easy to become data hoarder and it's easy to spend more time on preserving it than it is actually worth. I mean, think about how much of this data is worth to people other than you, i.e. what happens to it when you die. Life's short and there are so many things that are more exciting than backups.
Don't get me wrong though. Backups are important.Just know how much exactly are they important to you.
I use PAR2, even with multiple copies at different sites, because I look at my photos so rarely that I wouldn't notice a master file had become corrupt before it had mirrored to the other places and the original versions expired (1 year).
5% parity archives is an easy sell, on top of 200% for off site copies.
It's fine that you "feel secure" with your current backup regimen -- and I certainly hope you never lose any important data.
After losing data once, though, I promised myself I'd do my best to make sure that it never happened again. The "primary copy" of all my data lives on the individual machines (my workstation, primarily, but there's a bit on my main laptop too) but there's also a copy of it all on a server out in the garage as well as yet another server (see above) that I have in an ISP's facility nearby. There's yet another copy of a small fraction of my files (the "really, really, really important stuff") that's sitting in AWS (via tarsnap) as well.
Some folks are satisfied with a copy of their family photos copied onto a flash drive and tossed into a drawer or an external USB drive permanently sitting on the desk next to their computer. I know of several small companies in my area that thought they were safe with an external USB drive connected to their server... until they got hit with ransomware.
My laptop has a pair of mirrored SSDs, my workstation has a pair of mirrored SSDs and a pair of mirrored "spinners". The server in the garage (my "first backup") has RAID10. That box at the ISP has mirrored SSDs plus a "raidz2" that the backups live on. Some of us just want a little bit more reassurance than others. :-)