the raid 0 on b will cost you dearly.
the moment either hard drive fails, or the motherboard dies, you loose everything on both raid 0 drives. if they were normal mounted or in raid 1, then you could remove each drive and recover your files. raid 1 the system will still work when a single drive dies.
Or if you're spending the money anyway, go for 4(+) drives and put them in RAID 10 and get the best of both worlds ... Speed plus security.
true, raid 10 is the best option, also can easily drive the cost of the comptuer up another grand easily. My personal preference is not to chase the bleeding edge of performance, but to pick parts that total ~$1000 not including hard drives or disc drives, because those could be moved from previous builds into an new one, or try out a newer WD Gold network level drive, or one of the many nvme ssd drives with however many gb/s read and write speeds.
my main thing against a raid 0 was i built one with 4 samsung baracudda drives to out speed an ssd at 800 MB/s read and write. that computer i spilled a soda on, and fried nearly everything on the computer. i had to track down a motherboard to read the data from those drives because the raid chip used was only on that version of the board. that computer sat for 2 years while i waited for one to show up on ebay. Then i had to rebuild that computer part by part just to get it to boot up, then transfer my files to a backup external, then a direct copy to a wd gold drive.
I learned my lesson, NEVER USE raid 0, consider raid 1 if worried about any part of a system.
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