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In theory yes, more drives in a raid0 would lead to higher performance because the load is shared over more drives. However in practice you would be limited by the the bandwidth of the raid controller, the CPU and memory performance and similar. The performance increase would not be linear, that is 4 disks is not exactly twice as fast as 2 disks. In any ...


It depends from the workload, but IMHO yes adding 2 additional disks to existing 2 disks array should give better overall performance. You need to realize where the bottlenecks are: CPU - how much data flow CPU can handle, bus/controller - how much data it can carry, SSD/HDD - how much data it can give/take. Let's assume that there is a Linux software ...

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