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Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0 SeaMonkey/2.53.14 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Archives-Salt: 792bf6ee-fdb0-43a9-8e29-8ce6b654dd31 X-Archives-Hash: 2bf2de3a7d8e5e221ae929aca98356c5 Wols Lists wrote: > On 21/12/2022 02:47, Dale wrote: >> I think if I can hold out a little while, something really nice is going >> to come along.  It seems there is a good bit of interest in having a >> Raspberry Pi NAS that gives really good performance.  I'm talking a NAS >> that is about the same speed as a internal drive.  Plus the ability to >> use RAID and such.  I'd like to have a 6 bay with 6 drives setup in >> pairs for redundancy.  I can't recall what number RAID that is. >> Basically, if one drive fails, another copy still exists.  Of course, >> two independent NASs would be better in my opinion.  Still, any of this >> is progress. > > That's called either Raid-10 (linux), or Raid-1+0 (elsewhere). Note > that 1+0 is often called 10, but linux-10 is slightly different. > > I'd personally be inclined to go for raid-6. That's 4 data drives, 2 > parity (so you could have an "any two" drive failure and still recover). > > A two-copy 10 or 1+0 is vulnerable to a two-drive failure. A > three-copy is vulnerable to a three-drive failure. > > In other words, a two-copy raid-10 might be taken out by a failure > that a raid-6 will survive. A three-copy raid-10 might be taken out by > a failure that will take out a raid-6. Choose your poison :-) > > Cheers, > Wol > > . > This is why at some point, I'd like to have two sets of backups.  RAID or not.  If I alternate between the two or update one weekly and the other monthly, odds of both being lost for some reason is slim.  Nothing is ever impossible but not very likely.  I could even keep the monthly backup, or second backup, in a outbuilding.  That would protect from a house fire or something.  I have a fire safe but still.  I'm hoping that this Raspberry thing will work out.  My reasons, I can upgrade easily, change OS and/or software if I want plus I may can even expand to a larger number of drives if needed.  Buying a pre-built NAS, I think I'd be stuck with whatever I bought.  Most likely no path for upgrade, changing OS and/or software or much of anything else either.  Basically, it is what it is when I buy it.  Given the info in the video you shared, I think something good is coming as soon as things get back to going again.  Thanks again for the link.  It lead to some other good videos too.  Dale :-)  :-)