Ken Blake wrote:

May I presume to ask if "any" RAID method is useful in the home
environment, where all you really care about is safety of your data?


Not as far as I'm concerned. You get safety through backup.\

I see that now, thanks.

The biggest problem with backup is that I have been burned by backing up to
HDD, which are sort of like having a battery backup to a battery, where
both suffer the same failings under the same conditions.

So I like to backup to DVD, which has the main problem of data being larger
than 4.7 GB in toto.

So the way I'll get around that will be to create a bunch of 4,482,269
kilobyte size-limited NTFS folders (using Veracrypt). Once any of those
folders gets filled with data, I'll burn it and move on to the next folder
(which keeps the data from growing too large for backup).

That's a KISS system that is as simple as possible given that I have no
desire for HDD backup because external HDDs suffer from even more problems
than do the internal HDDs.

I guess when SSDs are cheaper than DVD storage, they might be the next way
though, as long as they don't have proprietary power supplies because I
have some old HDDs that use proprietary cables which means they're useless
now, ten years later, when the power supply cable is lost or broken.