I'm not overcomlicating things - data architecture is actually very complicated, and I believe oversimplifying it introduces significant risks.
Data safety is a very significant issue today that is not being taken seriously by most. I've witnessed many data losses by people I know which could have been avoided. Data safety was not an important issue ten years ago, and it will take some time for people to realize how important it has become and what to do about it. Cloud storage is probably the long term solution, but not really here yet.
You can build your own NAS box from components you buy at radio shack and software you write yourself. If you believe it will be equal to what the best company in the market offers - I can only wish you luck. The operating system is the most important component of the NAS, and I believe it took them thousands of man days to get where they are today.
Even if you have only one PC you still want to put your NAS on the network. That way it can sync with backup units without interrupting your PC. Also pretty much everybody has more than one data consuming device in their house or business and can benefit from a NAS.
Regarding RAID 6 - it doesn't solve the resilvering problem. It just means that if the first resilver fails, you go to an even more complicated process of secondary resilvering from all the remaining drives. RAID 6 is not significantly safer than RAID 5. RAID 10 is.
If you really have three full copies of your data which are fully synced every day, then you can say that each one can be less safe. However if they are direct connect to your PC then I don't see how a proper sync can work well. Also you want your main data to never fail if possible. Main fail means you go into recovery mode which is very unpleasant and can interrupt your business seriously. I agree it is not really necessary to make the main extra safe if you have 2 others, but for the convenience it is worth it if you can afford it. You still need 3 copies with one off site, which I believe almost nobody does today.
I don't understand everything but this I understand very well. You don't have to take my word for it, and if you prefer making your own boxes, using RAID 5/6, or whatever you feel is best, I wish you all the best. I posted this information in the hope that people will read it and learn from it, not to win an argument.
Data safety is a very significant issue today that is not being taken seriously by most. I've witnessed many data losses by people I know which could have been avoided. Data safety was not an important issue ten years ago, and it will take some time for people to realize how important it has become and what to do about it. Cloud storage is probably the long term solution, but not really here yet.
You can build your own NAS box from components you buy at radio shack and software you write yourself. If you believe it will be equal to what the best company in the market offers - I can only wish you luck. The operating system is the most important component of the NAS, and I believe it took them thousands of man days to get where they are today.
Even if you have only one PC you still want to put your NAS on the network. That way it can sync with backup units without interrupting your PC. Also pretty much everybody has more than one data consuming device in their house or business and can benefit from a NAS.
Regarding RAID 6 - it doesn't solve the resilvering problem. It just means that if the first resilver fails, you go to an even more complicated process of secondary resilvering from all the remaining drives. RAID 6 is not significantly safer than RAID 5. RAID 10 is.
If you really have three full copies of your data which are fully synced every day, then you can say that each one can be less safe. However if they are direct connect to your PC then I don't see how a proper sync can work well. Also you want your main data to never fail if possible. Main fail means you go into recovery mode which is very unpleasant and can interrupt your business seriously. I agree it is not really necessary to make the main extra safe if you have 2 others, but for the convenience it is worth it if you can afford it. You still need 3 copies with one off site, which I believe almost nobody does today.
I don't understand everything but this I understand very well. You don't have to take my word for it, and if you prefer making your own boxes, using RAID 5/6, or whatever you feel is best, I wish you all the best. I posted this information in the hope that people will read it and learn from it, not to win an argument.
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