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Wols Lists wrote: |
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> On 21/12/2022 02:47, Dale wrote: |
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>> I think if I can hold out a little while, something really nice is going |
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>> to come along. It seems there is a good bit of interest in having a |
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>> Raspberry Pi NAS that gives really good performance. I'm talking a NAS |
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>> that is about the same speed as a internal drive. Plus the ability to |
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>> use RAID and such. I'd like to have a 6 bay with 6 drives setup in |
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>> pairs for redundancy. I can't recall what number RAID that is. |
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>> Basically, if one drive fails, another copy still exists. Of course, |
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>> two independent NASs would be better in my opinion. Still, any of this |
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>> is progress. |
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> |
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> That's called either Raid-10 (linux), or Raid-1+0 (elsewhere). Note |
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> that 1+0 is often called 10, but linux-10 is slightly different. |
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> |
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> I'd personally be inclined to go for raid-6. That's 4 data drives, 2 |
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> parity (so you could have an "any two" drive failure and still recover). |
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> |
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> A two-copy 10 or 1+0 is vulnerable to a two-drive failure. A |
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> three-copy is vulnerable to a three-drive failure. |
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> |
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> In other words, a two-copy raid-10 might be taken out by a failure |
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> that a raid-6 will survive. A three-copy raid-10 might be taken out by |
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> a failure that will take out a raid-6. Choose your poison :-) |
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> |
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> Cheers, |
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> Wol |
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> |
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> . |
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> |
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This is why at some point, I'd like to have two sets of backups. RAID |
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or not. If I alternate between the two or update one weekly and the |
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other monthly, odds of both being lost for some reason is slim. Nothing |
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is ever impossible but not very likely. I could even keep the monthly |
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backup, or second backup, in a outbuilding. That would protect from a |
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house fire or something. I have a fire safe but still. |
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I'm hoping that this Raspberry thing will work out. My reasons, I can |
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upgrade easily, change OS and/or software if I want plus I may can even |
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expand to a larger number of drives if needed. Buying a pre-built NAS, |
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I think I'd be stuck with whatever I bought. Most likely no path for |
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upgrade, changing OS and/or software or much of anything else either. |
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Basically, it is what it is when I buy it. Given the info in the video |
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you shared, I think something good is coming as soon as things get back |
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to going again. |
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Thanks again for the link. It lead to some other good videos too. |
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Dale |
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:-) :-) |
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