this post was submitted on 22 Mar 2024
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Basically title. Is it common to use some kind of RAID for backing up other RAIDs or do people just go with single drives?

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[–] [email protected] 9 points 8 months ago* (last edited 8 months ago) (4 children)

It depends on your needs. How much do you value your data? Can you re-create / re-download it in case of a disk failure?

In some case, like a typical home users with a few writes per day or even week simply having a second disk that is updated every day with rsync may be a better choice. Consider that if you’re two mechanical disks spinning 24h7 they’ll most likely fail at the same time (or during a RAID rebuild) and you’ll end up loosing all your data. Simply having one active disk (shared on the network and spinning) and the other spun down and only turned on once a day with a cron rsync job mean your second disk will last a LOT longer and you’ll be safer.

[–] [email protected] 2 points 8 months ago* (last edited 8 months ago) (3 children)

Well, afaik the spinning up and down and related temperature changes do the most damage. I am not sure if a disk that is spun up daily will outlast one that mostly idles 24/7. Maybe if you do it only weekly?

[–] [email protected] 1 points 8 months ago (1 children)

Without any cold hard data, this isn't worth discussing.

[–] [email protected] 0 points 8 months ago

The "cold hard data" is that 100% of the people that would be able to collect this "cold hard data" run their drives 24/7.

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