@solrize@lemmy.world
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Very reliable hard drives don’t exist whatever the price. You need RAID. But, look at backblaze drive reliability statistics to identify some obvious problem drives to avoid. It would help if you said what you are trying to do with the drives, what capacity you want, etc.

@tal@lemmy.today
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You need RAID

I’d say that one needs backups.

After one has backups, if it’s necessary, then I’d look at RAID for reducing downtime in the event of a drive failure.

But one doesn’t want to use RAID instead of backups.

https://serverfault.com/questions/2888/why-is-raid-not-a-backup

Why is RAID not a backup?

When someone mentions RAID in a conversation about backups, invariably someone declares that “RAID is not a backup.”

Sure, for striping, that’s true. But what’s the difference between redundancy and a backup?

RAID guards against one kind of hardware failure. There’s lots of failure modes that it doesn’t guard against.

  • File corruption

  • Human error (deleting files by mistake)

  • Catastrophic damage (someone dumps water onto the server)

  • Viruses and other malware

  • Software bugs that wipe out data

  • Hardware problems that wipe out data or cause hardware damage (controller malfunctions, firmware bugs, voltage spikes, …)

and more.

No disagreement with your broader point about a single drive ultimately being bounded in the kind of reliability that it can provide, though.

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