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HBA cards vs PCI-E to SATA 3.0 Expansion Cards

Hi guys,

In this video: https://www.youtube.com/watch?v=FAy9N1vX76o Linus is using 2 hba cards.

I come across with this LTT video pretty recently. Because I've decided a while ago to build a NAS, I've thought to expand the number of SATA ports on my mother board, to use 2 x PCI-E to SATA3.0 Expansion Card Adapter (PCE8SAT-M01 8-Port PCI-E to SATA3.0 Expansion Card Adapter 6Gps PCI-E16X for Win).

Now my question is: In a NAS, should we use SATA3.0 expansionn cards or HBA cards? Why should is choose one over the other. 

In what way the NAS effectiveness it will change?

 

Thanks in advance!

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Are there any speed differences in reads/writes if you choose to go with a HBA card vs SATA expansion card?

It will be great if the LTT team will consider to make a video about this.

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