From: Farley Flud <ff@linux.rocks>
Subject: Re: My First HDD Failure (I Think)
Newsgroups: comp.os.linux.advocacy
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Date: Wed, 27 Nov 2024 20:44:17 +0000
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On Wed, 27 Nov 2024 02:15:05 -0600, Physfitfreak wrote:

 
> 
> I understood that what he offered took care of speed and volume nicely, 
> but not the safety. I could not make sure each backup is placed on a new 
> media or each disk there contains more than one backup. If a disk, any 
> disk, is accessed all the time, it will crash one day.
>

Wrong.

The entire concept of RAID is to ensure data integrity (i.e. safety)
through redundancy.

In vallor's example, 8 drives would have to fail SIMULTANEOUSLY
for data to be lost, and the probability of that occurrence would
be EXTREMELY small.

You should adopt a RAID system with maybe 3-5 drives.  This system
would be on-line continuously and you could backup your data in a
continuous fashion.

If desired, you could then backup to a more permanent storage
at regular intervals.

RAID is used everywhere when data integrity is essential.

I don't use it because my data is more of the "library"
model where weekly or even monthly backups are acceptable.


-- 
Systemd: solving all the problems that you never knew you had.