[問題] 最便宜的備份方式?
我最近幫忙接了一部linux server
想請問最「便宜」、有效的備份方式是什麼?
是不是 raid 1 呢?
因為只要再多買一顆一樣的硬碟就好了?
raid 0 是不是沒有容錯?
raid 5 是不是至少要買三顆硬碟?
raid 0+1 是不是要四顆?
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