[orijing]

> Random IO is processed first through the SSDs (the thing that they are really good at) while sequential IO short-cuts to the hard drives - which is pretty slick.

Any idea why the sequential benchmark numbers improved 4-5x when it is still "short-cutting" to the HDs?

[lucian1900]

Possibly because the HDDs are free to only do long sequential reads, as opposed to having to seek to some random place every now and then.