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>> -----Original Message----- |
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>> From: Wols Lists <antlists@××××××××××××.uk> |
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>> Sent: Thursday, December 23, 2021 9:54 AM |
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>> To: gentoo-user@l.g.o |
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>> Subject: Re: [gentoo-user] Synchronous writes over the network. |
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>> |
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>> > As always I'm interested in your comments about what works or |
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>> > doesn't work about this sort of setup. |
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>> > |
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>> My main desktop/server currently has two 4TB drives split 1TB/3TB. The two 3TB partitions are raid-5'd with a 3TB drive to give me 6TB of /home space. |
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>> I'm planning to buy an 8TB drive as a backup. The plan is it will go into a test-bed machine, that will be used for all sorts of stuff, but it will at least keep a copy of my data off my main machine. |
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>> |
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>> But you get the idea. If you get two spare drives you can back up on to them. I don't know what facilities ZFS offers for sync'ing filesystems, but if you're go somewhere regularly, where you can stash a hard disk (even a shed down the bottom of the garden :-), you back up onto disk 1, swap it for disk 2, back up on to disk 1, swap it for disk 2 ... |
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>> AND YOUR BACKUP IS OFF SITE! |
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>> |
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>> Cheers, |
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>> Wol |
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Data does not exist unless it exists in at least three places. Assume your most recent backup will also have a problem and plan accordingly with regard to time and number of copies.
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Back in the day the rule of thumb was that whatever losing the data would cost you, you should probably spend about a third of that on redundancy.
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LMP |
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