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On 04/05/2015 20:42, Nuno Magalhães wrote: |
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> Greetings gents. |
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> |
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> I may have missed it, but i haven't seen this suggested yet: RAID+LVM. |
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> If you already have a 3TB drive, buy another (or two more) and build a |
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> RAID1 or 5 array on them. Then build your LVM on top of /dev/md0 (or |
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> whatever device your raid is). |
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> |
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> Another approach is ZFS with RAID-Z or similar. I don't know how/if |
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> ZFS splits data among the drives, but i assume it's wise enough to do |
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> so in a way similar to a RAID+LVM combo. |
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That's a good analogy. ZFS spreads it's data out across multiple drives |
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using an n-drives for data plus m-drives for parity type setup. And the |
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whole lot forms a storage pool. |
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The main difference is that ZFS does all it's checksumming in software, |
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and it's one monolithic system. You can think of it being sort of a |
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combination of RAID and LVM features, but it's not implemented that way. |
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> If going RAID, make sure the rpm and cache are the same for |
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> performance's sake, and you can mix and match drives from different |
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> vendors (perhaps you should, to add to the redundancy). |
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> |
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> I don't know about btrfs, seems like it's still in a testing-phase so |
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> i'm not touching it yet. |
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> |
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> Just my 2¢ |
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> |
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> Cheers, |
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> Nuno |
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> |
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-- |
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Alan McKinnon |
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alan.mckinnon@×××××.com |
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